An increase in the ratio of glucagon to insulin, as occurs during a prolonged fast, would do which of the following? O a. increase liver glucose production O b. increase adipose tissue lipolysis c. increase glycogen storage in muscle and liver
An increase in the ratio of glucagon to insulin, as occurs during a prolonged fast, would do which of the following? O a. increase liver glucose production O b. increase adipose tissue lipolysis c. increase glycogen storage in muscle and liver
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Glucose Regulation via Insulin
(when blood glucose is elevated)
t Plasma glucose
This could be after a meal
Negative
feedback
Beta cells in pancreas
t Insulin secretion
Also decreases glucagon ***
i.e. insulin to glucagon ratio increases
Most tissues
Liver and muscle
Liver
1 Glucose uptake
+ Gluconeogenesis
t Glycogen
synthesis
into cells
| Glycogenolysis
Insulin also inhibits lipolysis
- you don't want to increase
plasma FFAS when glucose
is already high!
Initial stimulus
+ Plasma glucose
Physiological
response
Result
(a)
14
Transcribed Image Text:Question 13
An increase in the ratio of glucagon to insulin, as occurs during a prolonged fast, would do which of
the following?
a. increase liver glucose production
b. increase adipose tissue lipolysis
c. increase glycogen storage in muscle and liver
a and b are both correct
O a, b, andc are all correct
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