Transcript quiz1_2008_answers

Thermoregulation,
Glucose Metabolism,
and
Frog Reflexes Lab
1st Quiz
12 Sept 2008
Circle the letter of all correct
responses for each question!
Answer in upper right corner.
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#1
• During the 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
#2
• During the post-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
#3
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Insulin promotes (stimulates)
a) lipolysis
b) the formation of triglycerides
c) glycogenolysis
d) glucose uptake by hepatocytes
e) amino acid uptake by muscle cells.
#4
• Which of the following are integrators 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
#5
• Which of the following can stimulate
glucagon secretion?
• a) decreased plasma glucose concentration
• b) increased plasma amino acid
concentration
• c) gastrin
• d) epinephrine and sympathetic activity.
#6
• In a person with reactive hypoglycemia during the
second hour after drinking the Oral Glucose
Tolerance Test beverage containing 10 g of
glucose, what has happened to the glucose that
was just consumed?
• a) most of it has entered the sinks
• b) some of it has been converted to a-ketoacids
• c) most of it has been converted to ketones
• d) most of it has been taken up by cells in the
Islets of Langerhans in the pancreas.
#7
• Which of the following is an effector in the
negative feedback loop for thermoregulation?
• a) cutaneous arterioles
• b) hypothalamus
• c) cerebral cortex
• d) epinephrine
• e) sweat glands
#8
• Which of the following can stimulate the
secretion of insulin from certain pancreatic
cells?
• a) GIP
• b) amino acids in the plasma
• c) epinephrine in the plasma
• d) thinking about an impending meal.
#9
• Which of the following responses can be produced
even 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.
#10
• Give an example of feedforward and state the
benefit of feedforward in your example.
#11
• In the space remaining on the
bottom of the answer sheet,
diagram a negative feedback
response that begins with an icy
wind blowing across the legs of
this person.
This is a timed response.
Stop writing when the signal is
given.