animal physiology, MCQsAnimal physiology MCQ 1 March 13, 2017 October 2, 2017 Question #1: In the mammalian kidney, what causes water to be reabsorbed in the descending limb of the loop of Henle? Active transport of salt out of the tubule. An increase in the osmolarity of the nephron fluid Diffusion of salt out of the tubule Secretion of hydrogen ions from the renal medulla into the tubule. Question #2: In the mammalian circulatory system, excess fluid remaining in tissue spaces (interstitial fluid) is: removed in the form of sweat. reabsorbed back into the capillary bed. drained away by the lymphatic system absorbed by fat cells. Question #3: When you listen to a human heartbeat through a stethoscope, the softer “lubb” sound the heart makes is caused by which of the following actions? Closing of the atrioventricular valves (mitral and tricuspid). Sound of blood rushing into the atria Sound of blood rushing into the ventricles Closing of the semilunar valves (aortic and pulmonary). Question #4: All of the following statements about a nerve impulse are true, except which one? The magnitude of an impulse is always the same After one impulse there is a refractory period when the axon cannot be restimulated A nerve impulse can pass along an axon in one direction only It has a threshold below which it cannot be stimulated Question #5: Which one of the following statements about liver function is incorrect? Synthesises cholesterol from acetyl CoA Carries out gluconeogenesis Metabolises amino acids, fats and carbohydrates Stores bile, important in emulsifying fats in digestion Question #6: Myocytes are cells that can beat independently, outside the body, if supplied with glucose and oxygen. Myocytes are cells from: muscle heart brain protistsQuestion #7: Which of the following combinations of statements about muscle is correct? 1. Thick filaments are formed mainly from myosin. 2. Thin filaments are formed mainly from actin. 3. The H zone is formed by thick filaments alone. 4. The Z band lies in the centre of the I band. 5. Actinin holds actin filaments to the Z disc all of them 2, 3, 4 and 5 1, 2 and 3 2, 3 and 5 Question #8: Which one of the statements below about the mammalian nervous system is correct? Sensory nerve impulses enter the spinal cord by the dorsal root Sensory nerve impulses enter the spinal cord by the dorsal root Motor nerve impulses enter the spinal cord by the ventral root Motor nerve impulses enter the spinal cord by the dorsal root Question #9: Which of the following are typical features of a neutrophil? 1. It is agranulocytic 2. Engulfs bacteria by phagocytosis 3. Is the most abundant white blood cell 4. Is the smallest white blood cell 5. Has a compact round nucleus 1,2 and 3 2,3 and 5 2 and 3 all of the aboveQuestion #10: A patient has symptoms of gigantism. After a series of tests, it is concluded that the patient most likely has a tumour on which of the following structures? Pituitary gland Adrenal gland Hypothalamus Parathyroid gland Congratulations, you passed!I'm sorry but you did not achieve the required score. Also read: Cranial nerves Mnemonics, Human embryology video, Human embryologyGet weekly Biology Notes, MCQs, Mnemonics and Videos:Share this:Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Telegram (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to email this to a friend (Opens in new window)Like this:Like Loading...Related Vascular tissue systemGymnosperms Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.