Sympathetic stimulation to lung will A. Decrease respiratory rate and decrease t
ID: 81515 • Letter: S
Question
Sympathetic stimulation to lung will A. Decrease respiratory rate and decrease tidal volume B. Decrease respiratory rate and increase tidal volume C. Increase respiratory rate and decrease tidal volume D. Increase respiratory rate and increase tidal volume Fraternal twins A. Are formed when 1 ovum is fertilized and divide, and separates into 2 zygotes B. Are formed when 2 different ova are fertilized by 2 different sperm during the same menstrual cycle C. Are formed when 1 ovum is fertilized by 2 different sperm divides and separates into 2 zygotes D. Always have the same DNA Sperm cells mature in the A. After fertilizing ovum B. Epididymis C. Seminiferous tubules D. Vas deferens Intrinsic factor A. Is necessary to absorb vitamin A B. Is necessary to absorb vitamin B_12 C. Is necessary to absorb vitamin C D. Is necessary to absorb vitamin D A mature follicle about to ovulate is A. Graafian follicle B. Primary' follicle C. Primordial follicle D. Secondary follicle The placenta is derived from A. Embryonic tissue only B. Maternal tissue only C. Maternal and embryonic tissue D. Maternal and paternal and embryonic tissue E. Paternal tissue only F. Paternal and embryonic tissue The kidney corrects blood acidosis by A. Secreting H^+ and resorbing HCO_3^- B. Secreting H^+ and secreting HCO_3^- C. Resorbing H^+ and resorbing HCO_3^- D Resorbing H^+ and secreting HCO_3^-Explanation / Answer
72. D. The sympathetic nervous system activates the fight or flight response. It dilates the bronchi to allow more air to pass through. Asa result the respiratory rate and tidal volume increase, The tidal volume is the volume of air that moves into and out of the lungs in one normal or unforced breath.
73. B. Fraternal twins are dizygotic meaning they are formed by the fertilization of 2 different ova from 2 different sperms. They do not have identical DNA. Identical or monozygotic twins are formed when one egg splits into 2 after fertilization.
74. B The seminiferous tubules is where the spermatozoa are formed by meiosis from primary spermatocytes. The spermatozoa then go to the epididymis where they mature and are stored.
75 B. Intrinsic factor is necessary for absorption of Vitamin B12. It is produced by the gastric mucosa. It binds to Vitamin B12 to form a complex. Then the receptors for intrinsic factor on the ileal mucosa bind this complex and allow vitamin B12 to be absorbed into the blood.
76. A. A mature follicle about to ovulate is called a Graafian follicle. The graafian follicle breaks open to release the ovum by a process called ovulation.
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