Description : The following are true about the hormones secreted by the adrenal cortex: a. zona fasciculata secretes cortisol b. zona glomerulosa secretes aldosterone c. secretion of aldosterone is stimulated by ACTH d. all
Last Answer : all
Description : True statements about aldosterone include: a. secretion is mainly under the control of adrenocorticotrophic (ACTH) hormone secretion b. increases hepatic gluconeogenesis c. its secretion is stimulated by angiotensin d. in the kidney, mainly acts on the proximal convoluted tubules
Last Answer : its secretion is stimulated by angiotensin
Description : The following are true about aldosterone: a. it is secreted by the adrenal medulla b. its secretion is stimulated by decreased blood volume c. it stimulates active reabsorption of sodium in the distal renal tubules. d. it causes increased secretion of potassium by the distal renal tubules.
Last Answer : it causes increased secretion of potassium by the distal renal tubules.
Description : Aldosterone release is stimulated by (A) α2-Globulin (B) Renin (C) Angiotensin II (D) Growth hormone
Last Answer : Answer : C
Description : Aldosterone release is stimulated by (a) Angiotensin I (b) Angiotensin (c) Angiotensin III (d) Both (b) and (c)
Last Answer : Ans: D
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 : In mammals, spermatogenesis is stimulated by
Last Answer : In mammals, spermatogenesis is stimulated by A. MSH B. TSH C. ADH D. FSH.
Description : Insulin secretion: a. is inhibited by atropine b. is increased by vagal stimulation c. is inhibited by amino acids d. is stimulated by beta agonists
Last Answer : is increased by vagal stimulation
Description : The secretion of insulin is stimulated by: a. adrenaline b. somatostatin c. fatty acids d. acetylcholine
Last Answer : fatty acids
Description : What is correct to say about the hormone action in humans? (a) Glucagon is secreted by β-cells of islets of Langerhans and stimulates glycogenolysis. (b) Secretion of thymosins is stimulated ... receptors on ovarian cell membrane. (d) FSH stimulates the secretion of estrogen and progesterone.
Last Answer : (c) In females, FSH first binds with specific receptors on ovarian cell membrane.
Description : Patient presents with rapidly progressive root caries on many teeth. Which of the following laboratory results would be a possible indicator of this? A. Stimulated salivary secretion rate of 1.5ml/min B. ... of 105 organism/ml E. Salivary buffering PH 5.5 > 100000 CFU/ml high caries incidence
Last Answer : E. Salivary buffering PH 5.5
Description : Which statement is NOT correct about PTH? A) When calcium level rises, PTH secretion is inhibited. B) When calcium level lowers, PTH secretion is stimulated. C) PTH has the opposite effect of ... . D) PTH stimulates calcium absorption from the gut. E) PTH decreases the activity of osteoclasts.
Last Answer : E) PTH decreases the activity of osteoclasts.
Description : Choose the drug which blocks basal as well as stimulated gastric acid secretion without affecting cholinergic, histaminergic or gastrin receptors: A. Famotidine B. Loxatidine C. Omeprazole D. Pirenzepine
Last Answer : C. Omeprazole
Description : What is correct to say about the hormone action in humans ? (1) FSH stimulates the secretion of estrogen and progesterone (2) Glucagon is secreted by -cells of Islets of Langerhans and ... stimulated with aging (4) If females, FSH first binds with specific receptors on ovarian cell membrane
Last Answer : (4) If females, FSH first binds with specific receptors on ovarian cell membrane
Description : Acid secretion of stomach is stimulated by (a) Gastrin (b) Histamine (c) Vagus nerve (d) All the above
Last Answer : (d) All the above
Description : Read the following points `:-` (i) Increase GFR (ii) Increase B.P. (iii) Decreases blood volume (iv) Increases aldosterone secretion (v) Vasoconstrict
Last Answer : Read the following points `:-` (i) Increase GFR (ii) Increase B.P. (iii) Decreases blood volume (iv) ... II ? A. Two B. Three C. Four D. Five
Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules
Last Answer : Answer : D
Description : Diabetes insipidus results from (A) Decreased insulin secretion (B) Decreased ADH secretion (C) Decreased aldosterone secretion (D) Unresponsiveness of osmoreceptors
Last Answer : Answer : B
Description : Increased reabsorption of water from the kidney is the major consequence of the secretion of the hormone? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone
Description : One of the potent st imu lators of aldosterone secretion is (A) Increased sodium concentration (B) Decreased potassium concentration (C) Increased potassium concentration (D) Increased ECF volume
Description : All the following statements about angiotensin are true except (A) Its precursor is an α2-globulin (B) Its active form is an octapeptide (C) It is a vasodilator (D) It increases the secretion of aldosterone
Description : A 55-year-old male undergoes a total abdominal colectomy. Which of the following statement(s) is/are true concerning the hormonal response to the surgical procedure? a. Adrenocorticotropic ... in serum insulin and a fall in glucagon accelerate hepatic glucose production and maintain gluconeogenesis
Last Answer : Answer: a, c One of the earliest consequence of a surgical procedure is the rise in levels of circulating cortisol that occur in response to a sudden outpouring of ACTH ... hepatic glucose production, and, with other hormones (epinephrine and glucocorticoids), gluconeogenesis is maintained
Description : Aldosterone secretion is controlled by: a. plasma sodium concentration b. plasma calcium concentration c. plasma potassium concentration d. angiotensin II
Last Answer : angiotensin II
Description : Urine volume is increased with: a. carbonic anhydrase inhibitors b. hyperglycaemia c. increased aldosterone secretion d. damage to the posterior pituitary
Last Answer : damage to the posterior pituitary
Description : Injury to adrenal cortex is not likely to affect the secretion of which one of the following? (a) Aldosterone (b) Both androstenedione and dehydroepiandrosterone (c) Adrenaline (d) Cortisol
Last Answer : (c) Adrenaline
Description : Fight-or-flight reactions cause activation of (a) the parathyroid glands, leading to increased metabolic rate (b) the kidney, leading to suppression of renin- angiotensin-aldosterone pathway (c) ... epinephrine and norepinephrine (d) the pancreas leading to a reduction in the blood sugar levels.
Last Answer : (c) the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine
Description : Which of the following would help in prevention of diuresis? (a) More water reabsorption due to undersecretion of ADH. (b) Reabsorption of Na+ and water from renal tubules due to ... Atrial natriuretic factor causes vasoconstriction. (d) Decrease in secretion of renin by JG cells. (NEE
Last Answer : (b) Reabsorption of Na+ and water from renal tubules due to aldosterone.
Description : The level of sodium in the blood is regulated by the secretion of A) oxytocin. B) insulin. C) cortisol. D) aldosterone. E) ACTH.
Last Answer : D) aldosterone.
Description : Nonsteroidal antiinflammatory drugs reduce the diuretic action of furosemide by: A. Preventing prostaglandin mediated intrarenal haemodynamic actions B. Blocking the action in ascending limb of loop ... C. Enhancing salt and water reabsorption in distal tubule D. Increasing aldosterone secretion
Last Answer : A. Preventing prostaglandin mediated intrarenal haemodynamic actions
Description : Secretion of K+ in the late distal tubule and collecting ducts of kidney depends on: A. Intracellular K+ content B. Unabsorbed Na+ load presented to the distal segment C. Aldosterone level D. All of the above
Last Answer : D. All of the above
Description : Which gland secretes odorous secretion in mammals? (a) Bartholins (b) Prostate (c) Anal gland (d) Liver
Last Answer : (c) Anal gland
Description : In mammals, the primary function of the loop of Henle is: a) reabsorption of water b) water secretion c) ammonia secretion d) bicarbonate reabsorption
Last Answer : ANSWER: A -- REABSORPTION OF WATER
Description : Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds ? -Biology
Last Answer : Separation of oxygenated and deoxygenated blood allows good supply of oxygen to the body. This system is useful in animals that have high energy requirement. Mammals and birds constantly need oxygen to get energy to maintain their body temperature constant.
Description : (a) Draw a schematic representation of transport and exchange of oxygen and carbon dioxide during transportation of blood in human beings and label on it: Lung capillaries, Pulmonary artery to ... the advantage of separate channels in mammals and birds for oxygenated and deoxygenated blood? -Biology
Last Answer : (a) A schematic representation of transportation and exchange of oxygen and carbon dioxide during transportation of blood in human beings (b) It is necessary to separate oxygenated and deoxygenated ... . The separation of oxygenated and deoxygenated blood provides high oxygen supply to the organs.
Description : In mammals and birds why is it necessary to separate oxygenated and de-oxygenated blood -Biology
Last Answer : Mammals and birds are warm blooded animals. This means they can control their body temperature and do not have to depend on environment for their body temperature regulation. Because of this ... required to have separate oxygenated and de-oxygenated blood to supply the required amount of oxygen.
Description : Birds and Mammals have `:-`
Last Answer : Birds and Mammals have `:-` A. Single and closed type circulation B. Double and open ... closed type circulation D. Single and open type cirulation
Description : Among mammals, the efficiency of ventilation of lungs as compared to reptiles and birds is better developed by the presence of
Last Answer : Among mammals, the efficiency of ventilation of lungs as compared to reptiles and birds is better ... Only ribs C. Only costal muscles D. Diaphragm
Description : Which era could be called the "age of mammals and birds " ?
Last Answer : Which era could be called the "age of mammals and birds " ? A. Mesozoic B. Palaeozoic C. Cenozoic D. Creataceous
Description : Evolution of birds and mammals occurred in :
Last Answer : Evolution of birds and mammals occurred in : A. Eocene and oligocene periods B. Silurain ... and Permian periods D. Creataceous and triassic periods
Description : What is the main organs in keeping water balance in mammals and birds?
Last Answer : kidneys
Description : What are the similarities between mammals and birds and mammals?
Last Answer : a bird has feathes and a beak and a mammal gives milk to itsbirth
Description : compare and contrast the way birds and mammals reproduce?
Last Answer : birds are different than mammals
Description : Compared to mammals do birds absorb more or less water in their digestive system? Why is this phenomenon an adaptation to flight?
Last Answer : Bird feces are more liquid than mammal feces, i.e., less water is absorbed in the avian digestive system. The more frequent elimination of feces in birds due to their less solid feces is an adaptation to flight since their body weight is kept lower.
Description : 'Pigeon milk' is produced by – (1) Crop (2) Birds (3) Mammals (4) All of the above
Last Answer : (2) Birds Explanation: Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves where ... bears little resemblance to mammalian milk, being a semi-solid substance somewhat like pale yellow cottage cheese.
Description : Syrinx is the voice box in - (1) Amphibians (2) Reptiles (3) Birds (4) Mammals
Last Answer : (3) Birds Explanation: Syrinx is the name for the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal cords of mammals. The sound is ... the membrana tympaniformis (the walls of the syrinx) and the pessulus caused by air flowing through the syrinx.
Description : Classify the following animals are reptiles, mammals, birds and fish.
Last Answer : a) Blue whale----Mammals b) Cobra--------Reptile c) Panda--------Mammal d) Ostrich-------Bird e) Penguin------Bird f) Kiwi----------Bird g) Shark--------Fish h) Alligator -----Reptile i) Dolphin-------Mammal j) Tortoise------Reptile
Description : The circulatory systems of birds and mammals are considered to be more efficient. Why?
Last Answer : Because they have closed circulatory system consists of heart, blood and blood vessels and blood remains confined in closed blood vessels.
Description : Which group of vertebrates comprises the highest number of endangered species? (a) Mammals (b) Fishes (c) Reptiles (d) Birds
Last Answer : (a) Mammals
Description : Which one of the following options gives one correct example each of convergent evolution and divergent evolution? Convergent Divergent evolution evolution (a) Eyes of octopus Bones of forelimbs and ... birds (d) Thorns of Bougainvillea Eyes of octopus and tendrils of and mammals Cucurbita
Last Answer : (a) Eyes of octopus Bones of forelimbs and mammals of vertebrates