Description : Adrenaline is inactive orally because it is: A. Not absorbed from the gastrointestinal tract B. Destroyed by gastric acid C. Completely metabolized in the intestinal mucosa and liver before reaching systemic circulation D. Taken up by adrenergic nerve endings of the intestinal wall, liver and lungs
Last Answer : C. Completely metabolized in the intestinal mucosa and liver before reaching systemic circulation
Description : (a) Draw a diagram to show the nutrition in Amoeba and label the parts used for this purpose. Mention any other purpose served by this part other than nutrition. (b) Name the glands associated ... mention their role. (c) How is required pH maintained in the stomach and small intestine? -Biology
Last Answer : Answer.(a) Pseudopodia serves the purpose of locomotion apart from nutrition. (b) The salivary gland is associated with digestion of starch in human digestive tract. It secretes saliva which contains ... juice from liver makes the food alkaline in small intestine for the pancreatic enzymes to act.
Description : How do signals from nerve endings retain information about their origins as they travel to the brain?
Last Answer : Harp. The answer is in the later part of your question. Each nerve has a dedicated line of transmission from the periphery to the brain. The signals travel fast owing to the fact that ... nerve ultimately signals to a specific part of the brain, which allows you to discriminate various sensations.
Last Answer : I can't determine how much is a lot and how little is already, but believe me, there are a lot of them.
Description : What are the specialized nerve endings at the end of the sensory neurons is called?
Last Answer : Need answer
Description : Which of the following statement(s) is/are true concerning the neuroendocrine responses to shock? a. Sympathetic nerve endings release epinephrine which is responsible for greater than 80% ... injury and sepsis d. The renin-angiotensin axis further augments the sympathetic-mediated vasoconstriction
Last Answer : Answer: c, d The neuroendocrine response to shock attempts to achieve restoration of effective blood volume, mobilization of metabolic substrates, and maintenance of central ... . Angiotensin II is an extremely effective vasoconstrictor that further augments sympathetic-mediated vasoconstriction
Description : A sympathomimetic amine that acts almost exclusively by releasing noradrenaline from the nerve endings is (a) Ephedrine (b) Dopamine (c) Isoprenaline (d) Tyramine
Last Answer : Ans: D
Description : Tyramine induces release of noradrenaline from adrenergic nerve endings (a) By depolarizing the axonal membrane (b) By mobilizing Ca2+ (c) By a nonexocytotic process (d) Only in the presence of MAO inhibitors
Last Answer : Ans: C
Description : Drugs that block the a receptor on effector cells at adrenergic nerve endings (a) Antagonize the effects of isoproterenol on the heart rate (b) Antagonize some of the effects of epinephrine on ... the effects of epinephrine on adenylyl cyclase (d) Cause mydriasis (e) Decreases blood glucose levels
Last Answer : Ans: B
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
Description : The following are neurotransmitters at the autonomic post-ganglionic nerve endings: a. GABA b. noradrenaline c. acetylcholine d. 5 HT
Last Answer : acetylcholine
Description : The pain sensation a. arises from stimulation of free nerve endings b. is transmitted to the central nervous system by unmyelinated C fibres c. is transmitted to the brain via the spinothalamic tracts d. all above
Last Answer : all above
Description : The pain sensation a. arises from stimulation of free nerve endings b. is transmitted to the central nervous system by unmyelinated C fibres c. is transmitted to the brain via the ... d. is reduced by local anaesthetics through reduction of the potassium influx into the nerve fibres
Last Answer : is transmitted to the brain via the spinothalamic tracts
Description : Methyldopa lowers BP by: A. Inhibiting dopa decarboxylase in adrenergic nerve endings B. Generating α-methyl noradrenaline in brain which reduces sympathetic tone C. Generating α-methyl ... as a false transmitter in peripheral adrenergic nerve endings D. Activating vascular dopamine receptors
Last Answer : B. Generating α-methyl noradrenaline in brain which reduces sympathetic tone
Description : Rapid intravenous injection of clonidine causes rise in BP due to: A. Stimulation of vasomotor centre B. Release of noradrenaline from adrenergic nerve endings C. Agonistic action on vascular α2 adrenergic receptors D. Cardiac stimulation
Last Answer : C. Agonistic action on vascular α2 adrenergic receptors
Description : The usual cardiovascular effect of levodopa is: A. Bradycardia due to increased vagal tone B. Rise in blood pressure due to increased noradrenaline content of adrenergic nerve endings C. Fall in blood pressure due to decrease in sympathetic tone D. Both ‘A’ and ‘B’ are correct
Last Answer : C. Fall in blood pressure due to decrease in sympathetic tone
Description : Dantrolene sodium reduces skeletal muscle tone by: A. Reducing acetylcholine release from motor nerve endings B. Suppressing spinal polysynaptic reflexes C. Inhibiting the generation of muscle action potential D. Reducing Ca2+ release from sarcoplasmic reticulum in the muscle fibre
Last Answer : D. Reducing Ca2+ release from sarcoplasmic reticulum in the muscle fibre
Description : All of the following contribute to the antihypertensive action of propranolol except: A. Direct vasodilatation B. Decreased renin release from kidney C. Adaptation of blood vessels to reduced cardiac output D. Less noradrenaline release from sympathetic nerve endings
Last Answer : A. Direct vasodilatation
Description : A sympathomimetic amine that acts almost exclusively by releasing noradrenaline from the nerve endings is: A. Ephedrine B. Dopamine C. Isoprenaline D. Tyramine
Last Answer : D. Tyramine
Description : The α2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine
Last Answer : B. Prejunctional, postjunctional as well as extrajunctional in location
Description : Tyramine induces release of noradrenaline from adrenergic nerve endings: A. By depolarizing the axonal membrane B. By mobilizing Ca2+ C. By a nonexocytotic process D. Only in the presence of MAO inhibitors
Last Answer : C. By a nonexocytotic process
Description : Initial bradycardia caused by intramuscular injection of atropine is believed to be caused by: A. Stimulation of medullary vagal centre B. Stimulation of vagal ganglia C. Blockade of M2 receptors on SA nodal cells D. Blockade of muscarinic autoreceptors on vagal nerve endings
Last Answer : D. Blockade of muscarinic autoreceptors on vagal nerve endings
Description : The mechanism by which neostigmine improves contraction of myasthenic muscle involves: A. Repetitive binding of the acetylcholine molecules to the same receptors at the muscle endplate B. Diffusion of ... Activation of motor end-plate receptors by neostigmine molecules themselves D. All of the above
Last Answer : D. All of the above
Description : The α 2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine
Description : What is the proper diagnostic machine to see a tear or fistula in the digestive tract or reproductive organs?
Last Answer : answer:A CT Scan can be done with or without contrast and may be able to show a tear or fistula. They can also be done with dye in the blood stream to look for bleeding (like an angiogram) in the ... may not notice a small tear. The best way to look for a tear or fistula would be with endoscopy.
Description : What carries the waste from the digestive tract to the anus (Arthropods)?
Last Answer : Malpighian Tubes
Description : Glucose is carried from digestive tract to liver by
Last Answer : Glucose is carried from digestive tract to liver by A. Hepatic artery B. Hepatic portal vein C. Pulmonary vein D. None of the above
Description : Name the muscles which assit in the transportation of food through the digestive tract and gametes through the genital tract.
Last Answer : Name the muscles which assit in the transportation of food through the digestive tract and gametes through the genital tract.
Description : The hormone somatostatin is resposible for inhibiting the motility and absobtion in the digestive tract. It also inhibits the release of insuline and
Last Answer : The hormone somatostatin is resposible for inhibiting the motility and absobtion in the digestive tract. It also ... Alph B. Beta C. Delta D. F cells
Description : What is the correct order of sequence of the organs of the digestive tract?
Description : What flatworm lacks a digestive tract?
Description : What functions does the digestive tract preform?
Description : What is taking chemicals into the body through the digestive tract called?
Last Answer : Eating
Description : What is the muscular contractions that results in mixing of the contents of the digestive tract?
Last Answer : Feel Free to Answer
Description : What is found in the blood vessel and digestive tract?
Last Answer : white and red blood cells
Description : What type is muscle is found in the wall of the digestive tract?
Last Answer : Smooth muscle tissue is located in the wall of the digestivetract.
Description : Which of these is part of the digestive tract or gut?
Last Answer : small intestineA+ users
Description : Do snails have an incomplete or complete digestive tract?
Last Answer : They have complete digestive system.
Description : The absorption of glucose in the digestive tract (A) Occurs in the small intestine (B) Is stimulated by the hormone Glucagon (C) Occurs more rapidly than the absorption of any other sugar (D) Is impaired in cases of diabetes mellitus
Last Answer : A
Description : Which of the following statements about the role of the gut in shock and sepsis are true? A. Selective decontamination of the digestive tract with the use of oral antibiotics has been ... As compared with parenteral nutrition, enteral nutrition is associated with a reduction in septic morbidity.
Last Answer : Answer: BCD DISCUSSION: The gut has a vital role in the pathophysiology of shock. The splanchnic circulation is very vulnerable to the circulatory redistribution that occurs in shock, thus, gut ... , enteral feeding is more cost effective and is associated with a lower rate of septic morbidity
Description : The seeds of certain plants fail to germinate if they do not pass through the digestive tract of fruit-eating birds. This is due to - (1) hibernation (2) seed coat impermeability (3) infertility (4) vegetative reproduction
Last Answer : (2) seed coat impermeability Explanation: A dormant seed is one that is unable to germinate in a specified period of time under a combination of environmental factors that are ... to prevent germination during unsuitable ecological conditions, but the probability of seedling survival is low.
Description : The circulatory route that runs from the digestive tract to the liver is called: B A. Cornnary circulation B. Hepatic portal circulation C. Pulmonary circulation D. Systemic circulation
Last Answer : Hepatic portal circulation