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Adrenaline and the Fight or Flight Response

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Adrenaline and the Fight or Flight Response

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Questions and Answers

What is the effect of adrenalin on blood sugar levels?

Has no effect on blood sugar levels

Increases blood sugar levels (correct)

Decreases blood sugar levels

Maintains constant blood sugar levels

What happens when the glucose concentration in the blood rises?

The adrenal glands produce more adrenalin

The pancreas releases insulin (correct)

The pancreas releases glucagon

The liver converts glycogen to glucose

What is the function of insulin in the body?

To stimulate the synthesis of glucose from glycerol and amino acids

To decrease blood sugar levels

To stimulate the liver and muscles to remove excess glucose from the blood and store it as glycogen (correct)

To convert glycogen to glucose

What is the effect of glucagon on the liver?

<p>It stimulates the liver to convert glycogen to glucose</p> Signup and view all the answers

What is the role of adrenalin in the fight or flight response?

<p>To increase blood flow to muscles and output of the heart</p> Signup and view all the answers

Study Notes

Adrenaline (Epinephrine)

Normally produced by both the adrenal glands and certain neurons
Plays a crucial role in the fight or flight response

Effects of Adrenaline

Increases blood flow to muscles
Increases heart output
Causes pupil dilation
Stimulates blood sugar levels by:
- Converting glycogen to glucose (glycogenolysis)
- Synthesizing glucose from glycerol and amino acids
Inhibits the synthesis of glycogen from glucose

Glucose Regulation

Glucose concentration in the blood is controlled by the pancreas
Pancreas produces:
- Digestive enzymes
- Hormones insulin and glucagon

Insulin Function

Released when glucose concentration rises
Stimulates the liver and muscles to:
- Remove excess glucose from the blood
- Store it as glycogen

Glucagon Function

Released when glucose concentration falls
Stimulates the liver to:
- Convert stored glycogen into glucose
- Release glucose into the bloodstream

Blood Glucose Homeostasis

The pancreas maintains glucose concentration in the blood within narrow limits through the regulation of insulin and glucagon.

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Description

This quiz covers the functions of adrenaline, also known as epinephrine, in the body's fight or flight response. It includes its role in increasing blood flow, heart rate, and glucose synthesis.