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Thermoregulation, Glucose Metabolism, A bit of Endocrinology, and Frog Reflexes Lab

Thermoregulation, Glucose Metabolism, A bit of Endocrinology, and Frog Reflexes Lab. 1 st Quiz 14 Sept 2007 Circle the letter of all correct responses for each question!. # 1. During the post - absorptive state, what is the fate of glucose in muscle tissue ? a) converted to glycogen

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Thermoregulation, Glucose Metabolism, A bit of Endocrinology, and Frog Reflexes Lab

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  1. Thermoregulation, Glucose Metabolism, A bit of Endocrinology, andFrog Reflexes Lab 1st Quiz 14 Sept 2007 Circle the letter of all correct responses for each question!

  2. # 1 • During the post-absorptive state, what is the fate of glucose in muscle tissue? • a) converted to glycogen • b) converted to triglycerides • c) converted to amino acids • d) metabolized to generate ATP

  3. # 2 • During the absorptive state, what is the fate of glucose in liver cells? • a) taken in by facilitated transport membrane proteins • b) converted to fatty acids • c) converted to glycogen • d) released into the plasma

  4. #3 • Insulin promotes (stimulates) • a) glycogenolysis • b) the formation of triglycerides • c) gluconeogenesis • d) glucose uptake by hepatocytes • e) glucose uptake by muscle cells.

  5. #4 • Which of the following is/are efferent pathways in the feedback loop for glucose homeostasis? • a) Alpha cells in Islets of Langerhans • b) Beta cells in Islets of Langerhans • c) epinephrine • d) insulin • e) glucagon • f) sympathetic nerves

  6. #5 • Which of the following can stimulate insulin secretion? • a) decreased plasma glucose concentration • b) increased plasma amino acid concentration • c) gastrin • d) increased plasma epinephrine.

  7. #6 • In a person with reactive hypoglycemia during the second hour after drinking the Oral Glucose Tolerance Test beverage containing 10 g of glucose, • a) plasma glucose levels are higher than normal • b) glucagon secretion should be increased • c) levels of epinephrine would be elevated • d) a headache is likely as cerebral blood vessels dilate to provide brain tissue with glucose.

  8. #7 • Smelling the aroma from a pastry shop before you’ve eaten breakfast can trigger the secretion of ______ which is an example of _______. • a) insulin………..buffering • b) glucagon……..adaptation • c) insulin ……….feedforward • d) epinephrine…..natural selection

  9. #8 • Which of the following is an integrator in the negative feedback loop for thermoregulation? • a) cutaneous arterioles • b) hypothalamus • c) cerebral cortex • d) epinephrine • e) sweat glands

  10. #9 • Which of the following hormones are transported in the plasma mainly in combination with plasma proteins as “bound” hormones? • a) peptide hormones • b) thyroid hormones • c) steroid hormones • d) amine hormones

  11. #10 • Which of the following responses are eliminated when the brain of a frog is completely pithed? • a) righting response • b) corneal reflex • c) wiping reflex • d) orientation of the head with respect to gravity and visual cues.

  12. #11 • In the space remaining on the bottom of the answer sheet, diagram a negative feedback response that begins with a person jumping into icy cold water while wearing a bathing suit as part of a New Year’s ritual in Wisconsin. This is a timed response. Stop writing when the signal is given.

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