Description : In which the following can increase the rate of heart beat ? ltbr. (A) Sympathetic neaural signals. (B) Parasympathetic neural signals (C ) Adrenal me
Last Answer : In which the following can increase the rate of heart beat ? ltbr. (A) Sympathetic neaural signals. (B) Parasympathetic ... ,E,F C. A,C,D D. B,D,F
Description : Which of the following increases the rate of heart beat? (1) Peripheral nerves (2) Sympathetic nerves (3) Parasympathetic nerves (4) Cranial nerves
Last Answer : (2) Sympathetic nerves Explanation: Heart rate is controlled by the two branches of the autonomic (involuntary) nervous system. The sympathetic nervous system (SNS) and the parasympathetic nervous ... parasympathetic nervous sys-tem (PNS) releases the hormone acetylcholine to slow the heart rate.
Last Answer : Sympathetic nerves
Description : How do parasympathetic neural signals affect the working of the heart? (a) Reduce both heart rate and cardiac output. (b) Heart rate is increased without affecting the cardiac output. (c) Both heart rate and cardiac output increase. (d) Heart rate decreases but cardiac output increases.
Last Answer : (a) Reduce both heart rate and cardiac output.
Description : One of the following nerves inhibit the rate of heart beat `:-`
Last Answer : One of the following nerves inhibit the rate of heart beat `:-` A. Vagus B. Sympathetic C. Occullomotor D. None of the above
Description : Which of the following terms indicates the amount of blood pumped out of the ventricle with each contraction of the heart? a) Stroke volume Stroke volume is the amount of blood pumped out ( ... d) Preload Preload is the pressure created by a volume of blood within a ventricle before contraction.
Last Answer : a) Stroke volume Stroke volume is the amount of blood pumped out (ejected) with each contraction of the heart (heart beat). Stroke volume times heart rate equals cardiac output.
Description : if you suspect atrial flutter : Consider digoxin if not already in use because it frequently increases the conduction ratio and decreases the ventricular rate. , Avoid adrenergic and ... to the muscle decrease blood supply to the muscle the heart trying to beat fast ______________________________
Last Answer : decrease O2 supply to the muscle
Description : Sympathetic nervous system induces (a) secretion of digestive juices (b) heart beat (c) secretion of saliva (d) all of these.
Last Answer : (b) heart beat
Description : Which of the following cranial nerves can regulate heart beat? (a) X (b) IX (c) VIII (d) VII
Last Answer : a) X
Description : Assertion `:` First heart sound (LUBB) is produced at the beginning fo ventricular systole stage. Reason `:` During ventricular systole semilunar valv
Last Answer : Assertion `:` First heart sound (LUBB) is produced at the beginning fo ventricular systole stage. Reason ... D. If both Assertion & Reason are false.
Description : Increase in the excitability of nerves and muscles leading to sustained contraction of the muscles of laryx, face, hand and feet is due to
Last Answer : Increase in the excitability of nerves and muscles leading to sustained contraction of the ... Hypoactivity of thyroid D. Hypoactivit of parathyroid
Description : 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 ... parasympathetic nervous system d. the parasympathetic outflow is only found in the cranial nerves
Last Answer : the postganglionic neurones are largely unmyelinated
Description : 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 ... the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors
Last Answer : the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves
Description : The sympathetic nerves, in mammals, arise from (a) sacral nerves (b) 3rd, 7th, 9th and 10th cranial nerves (c) thoraco-lumbar nerves (d) cervical nerves.
Last Answer : (c) thoraco-lumbar nerves
Description : Which controls reflex action? Options: A) Sympathetic nervous system B) Central nervous system C) Parasympathetic nervous system D) Sensory nerves
Last Answer : C) Parasympathetic nervous system
Description : Assertion `:-` Small intestine is very long and has plica circularis & villi Reason `:` All these increase internal surface area of small intestine fo
Last Answer : Assertion `:-` Small intestine is very long and has plica circularis & villi Reason `:` All these ... False. D. If both Assertion & Reason are false.
Description : How do parasympathertic neural signals affect the working the heart
Last Answer : How do parasympathertic neural signals affect the working the heart A. Reduce both heart rate ... . Heart rate decrease but cardiac output increases.
Description : Shortacting nifedipine formulation is not recommended now for treatment of hypertension because: A. It tends to increase heart rate and cardiac work B. It invokes pronounced reflex sympathetic discharges C. It can impair haemodynamics in patients with diastolic dysfunction D. All of the above
Last Answer : D. All of the above
Description : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Last Answer : Branch of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Description : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Last Answer : Part of PNS which transmit impulses from CNS to involuntary organ and classified into sympathetic & parasympathetic neural system is
Description : A coal with high ash content is undesirable, as (A) It is abrasive to the coal pulveriser (i.e. ball mill) and the combustion chamber (B) The ash in molten condition gets absorbed in the pores of the ... and stick to the boiler tubes thereby reducing the heat transfer (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : "Sodium Pump" operates in - (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above
Last Answer : (3) Nerve impulse Explanation: Na+/K+-ATPase (also known as sodium-potassium pump) is an enzyme located in the plasma them brane of virtually every human cell and is common to all cellular ... are voltagegated, which means that they can open and close depending on the voltage across the membrane.
Description : One function of parasympathetic nervous system is (a) contraction of hair muscles (b) stimulation of sweat glands (c) acceleration of heart beat (d) constriction of pupil.
Last Answer : (d) constriction of pupil.
Description : “Sodium Pump” operates in (1) Muscle contraction (2) Heart beat (3) Nerve impulse (4) None of the above
Last Answer : Nerve impulse
Description : Which one of the following is the correct statement for respiration in humans? (a) Cigarette smoking may lead to inflammation of bronchi. (b) Neural signals from pneumotoxic centre in pons region ... . (d) About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino-haemoglobin.
Last Answer : (c) Workers in grinding and stone-breaking industries may suffer from lung fibrosis.
Description : Which one of the following is the correct statement for respiration in humans ? (1) About 90% of carbon dioxide (CO2 ) is carried by haemoglobin as carbamino-haemoglobin (2) Cigarette smoking ... of inspiration (4) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.
Last Answer : (4) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.
Description : Vasoactive drugs which cause the arteries and veins to dilate, thereby shunting much of the intravascular volume to the periphery and causing a reduction in preload and afterload include agents ... Furosemide (Lasix) Furosemide (Lasix) is a loop diuretic that reduces intravascular fluid volume.
Last Answer : a) Sodium nitroprusside (Nipride) Sodium nitroprusside is used in the treatment of cardiogenic shock.
Description : The nurse teaches the patient with peripheral vascular disease to refrain from smoking because nicotine causes a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the ... the bronchial tree, causing coughing. d) diuresis. Nicotine does not cause diuresis.
Last Answer : a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the extremities.
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 : pupillary dilatation
Last Answer : reduced gastrointestinal motility
Description : What structures through the tactile stimuli and travels after being converted into neural signals?
Last Answer : Need answer
Description : Which one of the following statements regarding a catalyst is not correct? A An enzyme is a catalyst that only binds certain substrates. B An enzyme is a protein that is a highly ... increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.
Last Answer : C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy.
Description : Assertion `:` If all external nerve supplies to a human heart are cut there will be no effect on the heart beat. Reason `:` Human heart is a myogenic
Last Answer : Assertion `:` If all external nerve supplies to a human heart are cut there will be no effect on ... False. D. If both Assertion & Reason are false.
Description : Hormone connected with increase rate if gluconeogenesis, blood pressure and heart beat is
Last Answer : Hormone connected with increase rate if gluconeogenesis, blood pressure and heart beat is A. Insulin B. Glucagon C. Adrenaline D. FSH
Description : Antidiuretic hormone (ADH) - (1) inhibits the secretion of growth hormone by the pituitary (2) inhibits the rate of heart beat (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules (4) causes an increase in the blood pressure
Last Answer : (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules
Description : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity of all elements is negative
Last Answer : Assertion :- First electrons affinity fo all element is positive. Reason :- Successive electron affinity ... D. If both Assertion & Reason are false
Description : Full activation of the sympathetic nervous system, as in maximal exercise, can produce all of the following responses except (a) Bronchial relaxation (b) Decreases intestinal motility (c) Increased renal blood flow (d) Mydriasis (e) Increased heart rate (tachycardia)
Last Answer : Ans: C
Description : Nor-epinephrine (i) is released by sympathetic fibers (ii) is released by parasympathetic fibers (iii)increases the heart rate (iv) decreases blood pressure. Which of the above statements are correct? (a) (i) and (iii) (b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)
Last Answer : (a) (i) and (iii)
Description : The sympathetic and parasympathetic systems exert functionally opposite influences on the following parameters except: A. Heart rate B. Atrial refractory period C. Pupil diameter D. Intestinal motility
Last Answer : B. Atrial refractory period
Description : The effect of noradrenaline on the heart include: a. tachycardiac b. increased duration of the cardiac action potential c. decreased potassium conductance of the membranes of pacemaker cells d. increased strength of cardiac contraction
Last Answer : increased strength of cardiac contraction
Description : Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its (A) Tensile strength (B) Chemical resistance (C) Flexibility (D) All (A), (B) & (C)
Last Answer : (C) Flexibility
Description : “Composite sleeper index” is employed to determine a) sleeper density requirement b) number of fixtures required for a particular type of sleeper c) durability of sleeper d) mechanical strength of wooden sleepers and thereby gives its suitability as to be used as li sleepers.*
Last Answer : d) mechanical strength of wooden sleepers and thereby gives its suitability as to be used as li sleepers.*
Description : Select the correct matching of a hormone, its source and function. Hormone Source Function (a) Vasopressin Posterior Increases loss pituitary of water through urine (b) Norepine- Adrenal ... (d) Prolactin Posterior Regulates growth pituitary of mammary glands and milk formation in females
Last Answer : (b) Norepine- Adrenal Increases heart phrine medulla beat, rate of respiration and alterness
Description : In the autonomic regulation of blood pressure (a) Cardiac output is maintained constant at the expense of other hemodynamic variables (b) Elevation of blood pressure results in elevated ... the sensitivity of the sensory baroreceptor nerve endings might cause an increase in sympathetic discharge
Last Answer : Ans: D
Description : Assertion `:-` Pneumotaxic centre can moderate the functions of the respiratory rhythm centre. Reason `:-` Neural signal from pneumotoxic centre can r
Last Answer : Assertion `:-` Pneumotaxic centre can moderate the functions of the respiratory rhythm centre. Reason `:- ... D. If both Assertion & Reason are false.
Description : Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyll and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) (A) Acts as a green house gas thereby raising earth's ... (B) Causes asphyxia (C) Causes increase in sea level (D) Enhances the green house effect
Last Answer : (B) Causes asphyxia
Description : The following are true about cardiac contraction: a. the P wave initiates the atrial contraction b. atrial contribution to ventricular filling is most effective at fast heart rate. c. b wave is generated by atrial contraction d. fourth heart sound occurs during atrial contraction
Last Answer : fourth heart sound occurs during atrial contraction