True statements about cerebral blood flow: a. it is controlled mainly by the autonomic nervous system b. cerebral arterioles constricts when the blood pressure is raised c. it is constant in the blood pressure range of 50 to 150 mm Hg systolic d. hypocapnia increases the cerebral blood flow

True statements about cerebral blood flow:
a. it is controlled mainly by the autonomic nervous system
b. cerebral arterioles constricts when the blood pressure is raised
c. it is constant in the blood pressure range of 50 to 150 mm Hg systolic
d. hypocapnia increases the cerebral blood flow
by

1 Answer

Answer :

it is constant in the blood pressure range of 50 to 150 mm Hg systolic
by

Related questions

True statements about the cerebral blood flow include: a. it is constant for the blood pressure in the range between 50-150mmHg b. the blood pressure is affected more by the PaO2 than PaCO2 c. hypocapnia causes vasoconstriction d. cerebral arterioles constricts when the blood pressure raises

Description : True statements about the cerebral blood flow include: a. it is constant for the blood pressure in the range between 50-150mmHg b. the blood pressure is affected more by the PaO2 than PaCO2 c. hypocapnia causes vasoconstriction d. cerebral arterioles constricts when the blood pressure raises

Last Answer : it is constant for the blood pressure in the range between 50-150mmHg

True statements about the cerebral blood flow include: a. it is constant for the blood pressure in the range between 50-150mmHg b. hypocapnia causes vasoconstriction c. cerebral arterioles constricts when the blood pressure raises d. all above

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Last Answer : all above

True statements about the pupil include: a. it is controlled mainly by the autonomic system b. miosis increases the depth of focus for near vision c. a change in the pupil diameter from 2 to 8 mm increases the amount of light entering the eye by 16- fold d. all above

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Last Answer : all above

Hyperventilation: a. decreases cerebral blood flow b. increases ionized calcium concentration in the serum c. causes hypocapnia d. causes metabolic alkalosis

Description : Hyperventilation: a. decreases cerebral blood flow b. increases ionized calcium concentration in the serum c. causes hypocapnia d. causes metabolic alkalosis

Last Answer : causes hypocapnia

Officially, hypertension is diagnosed when the patient demonstrates a systolic blood pressure greater than ______ mm Hg and a diastolic blood pressure greater than _____ mm Hg over a sustained period. a) 140, 90 According to the categories of blood pressure levels established by the JNC VI, stage 1 hypertension is demonstrated by a systolic pressure of 140–159 or a diastolic pressure of 90–99.

Description : Officially, hypertension is diagnosed when the patient demonstrates a systolic blood pressure greater than ______ mm Hg and a diastolic blood pressure greater than _____ mm Hg over a sustained period. a) ... , 70 Pressure of 120 systolic and 70 diastolic falls within the normal range for an adult.

Last Answer : a) 140, 90 According to the categories of blood pressure levels established by the JNC VI, stage 1 hypertension is demonstrated by a systolic pressure of 140–159 or a diastolic pressure of 90–99.

Which stage of shock is best described as that stage when the mechanisms that regulate blood pressure fail to sustain a systolic pressure above 90 mm Hg? a) Progressive In the progressive stage of shock, the mechanisms that regulate blood pressure can no longer compensate, and the mean arterial pressure falls below normal limits. b) Refractory The refractory or irreversible stage of shock represents the point at which organ damage is so severe that the patient does not respond to treatment and cannot survive.

Description : Which stage of shock is best described as that stage when the mechanisms that regulate blood pressure fail to sustain a systolic pressure above 90 mm Hg? a) Progressive In the progressive stage of ... which organ damage is so severe that the patient does not respond to treatment and cannot survive.

Last Answer : a) Progressive In the progressive stage of shock, the mechanisms that regulate blood pressure can no longer compensate, and the mean arterial pressure falls below normal limits.

An adult human with average health has systolic and diastolic pressures as (a) 120 mm Hg and 80 mm Hg (b) 50 mm Hg and 80 mm Hg (c) 80 mm Hg and 80 mm Hg (d) 70 mm Hg and 120 mm Hg.

Description : An adult human with average health has systolic and diastolic pressures as (a) 120 mm Hg and 80 mm Hg (b) 50 mm Hg and 80 mm Hg (c) 80 mm Hg and 80 mm Hg (d) 70 mm Hg and 120 mm Hg.

Last Answer : (a) 120 mm Hg and 80 mm Hg

According to the classification of hypertension diagnosed in the older adult, hypertension that can be attributed to an underlying cause is termed a) secondary. Secondary hypertension may be caused by a tumor of the adrenal gland (e.g., pheochromacytoma). b) primary. Primary hypertension has no known underlying cause. c) essential. Essential hypertension has no known underlying cause. d) isolated systolic. Isolated systolic hypertension is demonstrated by readings in which the systolic pressure exceeds 140 mm Hg and the diastolic measurement is normal or near normal (less than 90 mm Hg).

Description : According to the classification of hypertension diagnosed in the older adult, hypertension that can be attributed to an underlying cause is termed a) secondary. Secondary hypertension may be caused by a tumor of ... mm Hg and the diastolic measurement is normal or near normal (less than 90 mm Hg).

Last Answer : a) secondary. Secondary hypertension may be caused by a tumor of the adrenal gland (e.g., pheochromacytoma).

Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both systolic and diastolic BP by less than 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

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Last Answer : D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both systolic and diastolic BP by less than 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

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Last Answer : D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

The following are true about renal circulation: a. it accounts for 25% of the cardiac outputb. it is regulated predominantly by the autonomic nervous system c. in a normal 70 kg man, renal blood flow is about 1200ml/min d. macula densa cells are found in the efferent arteriolar wall

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The following are true about the autonomic nervous system: a. the preganglionic fibres are mainly myelinated, slow conducting B fibres b. the postganglionic fibres are mainly unmyelinated C fibres c. all preganglionic neurones are cholinergic neurons d. all above

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Last Answer : all above

Which one of the following statements is correct regarding blood pressure? (a) 130/90 mm Hg is considered high and requires treatment. (b) 100/55 mm Hg is considered an ideal blood pressure. (c) 105/50 mm Hg makes one very active. (d) 190/110 mm Hg may harm vital organs like brain and kidney.

Description : Which one of the following statements is correct regarding blood pressure? (a) 130/90 mm Hg is considered high and requires treatment. (b) 100/55 mm Hg is considered an ideal blood pressure. (c) 105/50 mm Hg makes one very active. (d) 190/110 mm Hg may harm vital organs like brain and kidney.

Last Answer : d) 190/110 mm Hg may harm vital organs like brain and kidney.

Normal blood pressure of man is – (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/150 mm Hg

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A woman in the 28th week of pregnancy has developed pregnancy induced hypertension with a blood pressure reading of 150/100 mm Hg. Select the most appropriate antihypertensive drug for her: A. Furosemide B. Methyldopa C. Propranolol D. Captopril

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With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres are usually longer than preganglionic parasympathetic fibres c. acetylcholine is the neurotransmitter at the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

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Useful steps to optimize systemic oxygen delivery include: a. Maintaining mean arterial blood pressure between 50 and 90 mm Hg b. Optimizing PEEP levels by monitoring mixed venous saturation c. Turning the patient prone d. Sedation or paralysis

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An 18-year-old man shot once in the left chest has a blood pressure of 80/50 mm. Hg, a heart rate of 130 beats per minute, and distended neck veins. Immediate treatment might include: A. Administration of one liter of Ringer's lactate solution. B. Subxiphoid pericardiotomy. C. Needle decompression of the left chest in the second intercostal space. D. Emergency thoracotomy to cross-clamp the aorta.

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The following are true about ocular circulation: a. only 4% of the total blood supply to the eye goes to the retina b. the choroidal blood flow in normal people is ten times that of the grey mater of the brain c. autoregulation occurs in both retinal and choroidal circulation d. a PaCO2 rise of 1 mm Hg induces a 3% rise in retinal blood flow

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Which of the following statements about septic shock are true? A. A circulating myocardial depressant factor may account for the cardiac dysfunction sometimes seen with shock due to sepsis or SIRS. B. A cardiac index (CI) of 6 liters per minute per square meter of body surface, a pulmonary capillary wedge pressure of 15 mm. Hg, and a systemic vascular resistance index (SVRI) of 800 dynes-sec/(cm 5-m 2) is a hemodynamic profile consistent with septic shock. C. An increase in SvO 2 in septic patients may be explained by the finding of anatomic arteriovenous shunts. D. Results of human trials employing antimediator therapy, such as antiendotoxin antibodies, IL-1 receptor antagonist, and tumor necrosis factor (TNF) antibodies, have confirmed animal studies that demonstrate a significant im

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The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatationc. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

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Last Answer : pupillary dilatation

The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatation c. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

Description : The effect of sympathetic nervous system include: a. contraction of the bladder detrusor muscle b pupillary dilatation c. reduced gastrointestinal motility d. constricts bronchiole smooth muscle

Last Answer : reduced gastrointestinal motility

Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute). (A) 5-10 (B) 30-80 (C) 150-250 (D) 350-400

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Last Answer : (B) 30-80

The following are true about the autonomic nervous system: a. the postganglionic neurones are largely unmyelinated b. all preganglionic neurones are cholinergic c. the preganglionic neurones of the sympathetic nervous system are shorter than the parasympathetic nervous system d. the parasympathetic outflow is only found in the cranial nerves

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Last Answer : the postganglionic neurones are largely unmyelinated

With regard to cerebral autoregulation: a. cerebral blood flow is constant over a diastolic blood pressure of 60 to 140 mmHg b. autoregulation is lost during the acute phase of subarachnoid haemorrhage c. it is impaired in hypercapnia d. it is impaired in hypoxia

Description : With regard to cerebral autoregulation: a. cerebral blood flow is constant over a diastolic blood pressure of 60 to 140 mmHg b. autoregulation is lost during the acute phase of subarachnoid haemorrhage c. it is impaired in hypercapnia d. it is impaired in hypoxia

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Oncotic pressure of plasma is about (A) 10 mm of Hg (B) 15 mm of Hg (C) 25 mm of Hg (D) 50 mm of Hg

Description : Oncotic pressure of plasma is about (A) 10 mm of Hg (B) 15 mm of Hg (C) 25 mm of Hg (D) 50 mm of Hg

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The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is (a) 50 mm Hg (b) 75 mm Hg (c) 20 mm Hg (d) 30 mm Hg.

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Last Answer : c) 20 mm Hg

All of the following statements about hemorrhagic shock are true except: A. Following hemorrhagic shock, there is an initial interstitial fluid volume contraction. B. Dopamine, or a similar inotropic agent, should be given immediately for resuscitation from hemorrhagic shock, to increase cardiac output and improve oxygen delivery to hypoperfused tissues. C. The use of colloid solutions or hypertonic saline solutions is contraindicated for treatment of hemorrhagic shock. D. In hemorrhagic shock, a narrowed pulse pressure is commonly seen before a fall in systolic blood pressure.

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Insulin - (1) increases blood sugar (2) decreases blood sugar (3) constricts blood vessels (4) stimulates lactation

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Last Answer : (2) decreases blood sugar Explanation: Insulin is central to regulating carbohydrate and fat metabolism in the body. It stops the use of fat as an energy source by inhibiting the release of glucagon. It removes excess glucose from the blood, which otherwise would be toxic.

Insulin : (1) increases blood sugar (2) decreases blood sugar (3) constricts blood vessels (4) stimulates lactation

Description : Insulin : (1) increases blood sugar (2) decreases blood sugar (3) constricts blood vessels (4) stimulates lactation

Last Answer : decreases blood sugar

Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute. (A) 1 to 5 (B) 30 to 80

Description : Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute. (A) 1 to 5 (B) 30 to 80

Last Answer : (B) 30 to 80

Normal blood pressure reading of an adult human : (1) 80/120 mm Hg (2) 120/80 mm Hg (3) 130/90 mm Hg (4) 160/95 mm Hg

Description : Normal blood pressure reading of an adult human : (1) 80/120 mm Hg (2) 120/80 mm Hg (3) 130/90 mm Hg (4) 160/95 mm Hg

Last Answer : (2) 120/80 mm Hg Explanation: According to the American Heart Association (AHA), normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic ... . Having a blood pressure greater than 140/ 90 mm Hg is considered high blood pressure or hypertension.

Normal blood pressure of man is - (1) 80/120 mm (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg

Description : Normal blood pressure of man is - (1) 80/120 mm (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg

Last Answer : (1) 80/120 mm Explanation: Normal blood pressure is considered to be at or below 120 over 80 (120/80). Normally, blood pressures are usually categorized into three groups: low (90/60 or*lower), high ( 140 / 90 or higher), and normal (values above 90/60 and below 130/80).

When measuring the blood pressure in each of the patient’s arms, the nurse recognizes that in the normal adult, the pressures a) differ no more than 5 mm Hg between arm pressures. Normally, in the absence of disease of the vasculature, there is a difference of no more than 5 mm Hg between arm pressures. b) must be equal in both arms. The pressures in each arm do not have to be equal in order to be considered normal. c) may vary 10 mm Hg or more between arms. Pressures that vary more than 10 mm Hg between arms indicate an abnormal finding. d) may vary, with the higher pressure found in the left arm. The left arm pressure is not anticipated to be higher than the right as a normal anatomical variant.

Description : When measuring the blood pressure in each of the patient's arms, the nurse recognizes that in the normal adult, the pressures a) differ no more than 5 mm Hg between arm pressures. Normally, in ... . The left arm pressure is not anticipated to be higher than the right as a normal anatomical variant.

Last Answer : a) differ no more than 5 mm Hg between arm pressures. Normally, in the absence of disease of the vasculature, there is a difference of no more than 5 mm Hg between arm pressures.

A 40-year-old politician suffered from attacks of chest pain diagnosed as angina pectoris. He had a tense personality, resting heart rate was 96/min, blood pressure 170/104 mm Hg, but blood sugar level and lipid profile were normal. Select the most suitable antihypertensive for initial therapy in his case: A. Nifedipine B. Hydrochlorothiazide C. Atenolol D. Methyldopa

Description : A 40-year-old politician suffered from attacks of chest pain diagnosed as angina pectoris. He had a tense personality, resting heart rate was 96/min, blood pressure 170/104 mm Hg, but ... antihypertensive for initial therapy in his case: A. Nifedipine B. Hydrochlorothiazide C. Atenolol D. Methyldopa

Last Answer : C. Atenolol

Normal blood pressure reading of an adult human : (1) 80/120 mm Hg (2) 120/80 mm Hg (3) 130/90 mm Hg (4) 160/95 mm Hg

Description : Normal blood pressure reading of an adult human : (1) 80/120 mm Hg (2) 120/80 mm Hg (3) 130/90 mm Hg (4) 160/95 mm Hg

Last Answer :  120/80 mm Hg

Normal blood pressure of man is (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg

Description : Normal blood pressure of man is (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/120 mm Hg

Last Answer : 80/120 mm Hg

At the end of the ventricular contraction, the maximum arterial pressure is attained, and blood flow is most rapid. This is correctly termed the: a) arterial maximum b) gluteus maximum c) diastolic pressure d) systolic pressure

Description : At the end of the ventricular contraction, the maximum arterial pressure is attained, and blood flow is most rapid. This is correctly termed the: a) arterial maximum b) gluteus maximum c) diastolic pressure d) systolic pressure

Last Answer : ANSWER: D -- SYSTOLIC PRESSURE

unlike the somatic nervous system, the autonomic nervous system -General Knowledge

Description : unlike the somatic nervous system, the autonomic nervous system -General Knowledge

Last Answer : The given statement is true.

Components of autonomic nervous system (ANS)? -Biology

Description : Components of autonomic nervous system (ANS)? -Biology

Last Answer : answer:

What is the autonomic nervous system ?

Description : What is the autonomic nervous system ?

Last Answer : : The organs over which we have no control are controlled and controlled by the autonomic nervous system . The internal organs of the body , such as the heart , intestines , stomach ... effect on the functioning of these systems, they perform their functions much more independently and individually.

The autonomic nervous system is also known as (a) Visceral (b) Vegetative (c) Involuntary nervous system (d) All of the above

Description : The autonomic nervous system is also known as (a) Visceral (b) Vegetative (c) Involuntary nervous system (d) All of the above

Last Answer : Ans: C

Hypersensitivity refers to undesirable reactions produced by a) circulatory system b) Respiratory system c) Immune System d) Endocrine system e) Autonomic nervous system

Description : Hypersensitivity refers to undesirable reactions produced by a) circulatory system b) Respiratory system c) Immune System d) Endocrine system e) Autonomic nervous system

Last Answer : Ans: C

Mention the two parts of the autonomic nervous system.

Description : Mention the two parts of the autonomic nervous system.

Last Answer : The two parts of the autonomic nervous system are: a) Sympathetic system b) para sympathetic system

State the function of autonomic nervous system.

Description : State the function of autonomic nervous system.

Last Answer : The function of autonomic nervous system is to regulate the involuntary actions of the body

What is autonomic nervous system?

Description : What is autonomic nervous system?

Last Answer : Autonomic nervous system consists of a set of peripheral nerves that connect the organs like heart, lungs and digestive tract and other internal organs.

The autonomic nervous system innervates all of these except? A. Cardiac muscles B. Skeletal muscles (Answer) C. Smooth muscles D. none

Description : The autonomic nervous system innervates all of these except? A. Cardiac muscles B. Skeletal muscles (Answer) C. Smooth muscles D. none

Last Answer : B. Skeletal muscles (Answer)