1:01 PM Tue Mar 31 @6% Done 3cf9b4f83496e41f8cf2844c8786ce65 (1 of 44) Bio 9 Homework 3 25 points Name: S 20 Multiple Choice (1 pt each) 1. The Somatic nervous system a. ACh is the neurotransmitter for by most postganglionic sympathetic nerve fiber b. Sympathetic division is part of the 'Fight or Flight' response c. Epinephrine stimulates only alpha receptors d. Epinephrine dilates bronchioles and blood vessels e. Ach is the neurotransmitter at the postsynaptic end and binds to nicotinic receptors on the Motor end plate 2. Insulin uses which of these receptors to transduce a signal? a. G-protein-coupled receptor (GPCR) b. nuclear hormone receptor c. receptor tyrosine kinase (RTK) d. a and b e. b and c 3. Rank these voluntary muscle structures based on size, with 5 being the largest and 1 the smallest. (2 pts) a. myofiber b. skeletal muscle c. myofibril d. fascicle e. myofilament 4. The Hypothalamo-hypophyseal portal system a. an organ responsible for nutrient and waste exchange between the fetus and mother b. is a nerve network c. secretes estrogen d. secretes progesterone e. allows hormones produced in the hypothalamus to be transferred to the anterior pituitary Fill-in (1 pt per blank) 5. The Organ of Corti when stimulated will allow passive movement of ion into the hair cells that become depolarized and release the neurotransmitter that stimulate the cochlear nerve.
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The Somatic nervous system a. ACh is the neurotransmitter for most postganglionic sympathetic nerve fibers. - False b. The sympathetic division is part of the Fight or Flight response. - True c. Epinephrine stimulates only alpha receptors. - False d. Epinephrine Show moreā¦
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52. The autonomic nervous system carries out many somatic reflexes that are crucial to homeostasis. A. Postcentral gyrus in the left parietal lobe. B. Postcentral gyrus in the right temporal lobe. C. Postcentral gyrus in the left frontal lobe. D. Precentral gyrus in the left frontal lobe. E. Precentral gyrus in the right frontal lobe. 54. The binding of ________ to a nicotinic receptor of a muscle fiber will ________ it. A. monoamine oxidase; inhibit B. acetylcholinesterase; excite C. acetylcholine; excite D. acetylcholine; inhibit E. norepinephrine; excite 56. During the absolute refractory period, which of the following is true? A. It is possible to trigger a new action potential, but only with an unusually strong stimulus. B. The neuron fires at its maximum voltage; a stimulus depolarizes the neuron to threshold. C. No stimulus of any strength will trigger a new action potential. D. If a neuron reaches threshold, the action potential goes to completion. E. The signal grows weaker with distance. 57. Nonfluent aphasia, due to a lesion in the ________, results in slow speech, difficulty in choosing words, or use of words that only approximate the correct word. A. primary motor area B. Broca area C. Wernicke area D. cerebral lateralization E. primary auditory area 58. Which of the following is the correct abbreviation for the hormone that stimulates the anterior pituitary to secrete ACTH? A. GHRH B. CRH C. GHIH D. APRH E. TRH 59. Propranolol, a beta-blocker, is typically used to ________. A. produce vasoconstriction of the coronary arteries B. produce bronchodilation C. decrease heart rate D. increase heart rate E. produce vasodilation of blood vessels of skeletal muscle.
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The spinal cord is responsible for conduction of information to and from the brain and carries out reflex action. The neurotransmitter of the parasympathetic division is. This neurotransmitter plays an important role in sleeping, emotions, and perception. How do action potentials relay different intensities of information? Memories are stored in the sensory association areas of the. Testosterone is produced and secreted by. Which of the following cerebral areas is not correctly matched with its function? This part of the brain forms the link between the nervous system and the endocrine system? Thyroid hormones directly regulate what aspect of human physiology?
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11. Which hormone does the adrenal medulla secrete in response to stress? a. mineralocorticoids b. epinephrine c. glucacorticoids d. ACTH 12. The anterior pituitary gland is known to secret the following hormones: a. Luteinizing hormone (LH), follicle stimulating hormone (FSH), prolactin b. Lipid hormone (LH), antidiuretic hormone (ADH), prolactin c. Parathyroid hormone (PTH), follicle stimulating hormone (FSH), prolactin d. Luteinizing hormone (LH), parathyroid hormone (PTH), follicle stimulating hormone (FSH) 13. Thyrotropin releasing hormone (TRH) is known to: a. inhibit the release of TSH from the posterior pituitary b. stimulate the release of TSH from the posterior pituitary c. inhibit the release of TSH from the anterior pituitary d. stimulate the release of TSH from the anterior pituitary 14. Which of these receptors are distinct among sensory receptors because they make direct connections with brain interneurons? a. mechanoreceptors b. olfactory receptors c. photoreceptors d. auditory receptors 15. Which function is controlled by the somatic division of the peripheral nervous system? a. voluntary muscle movements b. smooth muscle contractions c. blood pressure d. glandular secretions 16. Which function is controlled by the autonomic division of the peripheral nervous system? a. posture b. muscle tone c. heart rate d. balance 17. Which of these regulates basic homeostatic functions and contributes to endocrine control? a. olfactory bulb b. hypothalamus c. medulla oblongata d. thalamus 18. Which of these is a function of the cerebrum? a. muscle movement and balance b. transfer nerve signals between the cerebellum and the medulla c. higher brain functions d. autonomic nerve control 19. Which of these measurements of membrane potential (mV) best represents the peak action potential of a neuron conducting a nerve signal? a. 0 b. -30 c. -50 d. +30 20. Which of these prevents an action potential from reversing direction? a. Glial cells b. nodes of Ranvier c. refractory period d. ion channels
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