final_03OLD - Multiple choice Choose the best answer A...

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Multiple choice: Choose the best answer. A. Renin B. ADH C. FSH D. Melatonin E. LH 1. _________ Produced in the posterior lobe of the pituitary gland. 2. _________ Increases blood pressure by cleaving angiotensin. 3. _________ Inhibits the suprachiasmatic nucleus in the brain.. 4. _________ Tropic hormone that stimulates follicle development. 5. _________ Stimulates Leydig cells. 6. _________ Stimulates water reabsorption through aquaporin regulation. 7. _________ Tropic hormone that stimulates Sertoli cells.
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Choose the best answer 8. _________ A zymogen.. 9. _________ Covers the myosin binding sites on actin.. 10. _________ Macronutrient that serves as a major signalingmolecule. 11. _________ Precursor of retinol. 12. _________ Precursor of an enzyme.. 13. _________ Pulls cover from myosin binding sites on actin. 14. _________ Produced in the stomach. 15. _________ Found in visual pigments.
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Choose the best answer 16. _________ Atrial naturietic factor (ANF) 17. _________ Epinephrine 18. _________ Acetylcholine (from the autonomic nervous system) 19. _________ Norepinephrine (from the autonomic nervous system) 20. _________ Acetylcholine (from the somatic nervous system) 21. _________ Angiotensin II 22. _________ Antidiuretic hormone (ADH) 23. _________ Ethanol 24. _________ Caffeine 25. _________ Prolactin 26. _________ Aldosterone
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Consider a species of alien whose neurons that work differently from those of humans. Specifically, the ion concentrations inside and outside the cell membrane are: sodium (150 mM in, 15mM out), chloride (120 mM in, 12 mM out), fluoride (15 mM in, 150 mM out), calcium 0.1 mM in, 5 mM out). At rest, the major leak channel is selectively permeable to flouride. The neuronal membrane also contains voltage-gated channels (which open only in response to membrane depolarization) that are selectively permeable to either sodium or chloride, and the presynaptic terminal contains voltage-gated calcium channels that open only in response to depolarization. The signal for neurotransmitter release is calcium. From the choices below, what would be the effects of the following treatments on a neuron from this alien species? (Do not assume the existence of any channels other than those noted). A. Depolarization of the membrane B. Hyperpolarization of the membrane C. Little immediate effect on membrane potential, but depolarization is more difficult. D. Little effect on membrane potential, but harder to evoke neurotransmitter release E. Little effect on membrane properties or neurotransmitter release
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