Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
1. Brain
What is its energy contribution? |
None
|
|
|
1. Brain
What is glucose consumption difference in a resting & active brain? |
use about the same amount of glucose
|
|
|
1. Brain
What happens in starvation? |
brain is given top priority in terms of glucose supply
|
|
|
1. Brain
What happens in advanced starvation? |
when blood glucose levels drop, the brain will switch to the metabolism of ketone bodies
|
|
|
2. Heart Muscle
What type level of supply does the heart have? |
continuous supply of fuels for obvious reasons.
|
|
|
2. Heart Muscle
What type of fuel does the heart use? |
relies mainly on fatty acids ( more reliable than CHO stores)
Can also use ketone bodies, glucose, pyruvate and lactate |
|
|
2. Heart Muscle
What happens during starvation? |
can switch to ketone bodies supplied by the liver
|
|
|
2. Heart Muscle
What energy contribution does it make? |
Like the brain, the heart makes no energy contribution to the other tissues of the organism.
|
|
|
3. Skeletal Muscle
Under what conditions is it capable of operating under? |
Anaerobically
Under moderate activity energy is derived from aaerobic energy production |
|
|
3. Skeletal Muscle
Where does the glucose come from? |
from the blood and from the break down of glycogen in skeletal muscle itself.
|
|
|
3. Skeletal Muscle
Does the glycogen in muscle contribute to blood glucose? Why? |
NO
Does not have the enzyme glucose-6-phosphatase to convert glucose-6-P to glucose for release into the blood |
|
|
3. Skeletal Muscle
What happens during starvation? |
muscle tissue is inactive and its energy demands are low.
|
|
|
3. Skeletal Muscle
Does the muscle contribute energy?? If so how? |
supply the rest of the body with energy in the form of amino acids from muscle protein break down; these are transported to the liver for gluconeogenesis
|
|
|
4. Adipose tissue
What is it purpose? |
Stores vast reserves of energy as triglycerides
|
|
|
4. Adipose tissue
How does it contribute energy? |
Triglycerides are broken down and transported to the liver in the blood stream attached to serum albumen.
|
|
|
4. Adipose tissue
How much energy stored as fats does the average person have? |
about 565 000 KJ which will sustain life for several months.
|
|
|
5. Liver
What is the primary function? |
is to maintain blood glucose levels
|
|
|
5. Liver
What major role does it play in? |
CHO, lipid and amino acid (and hence protein) metabolism.
|
|
|
5. Liver
What does it monetor & regulate, and manufacture? |
the chemical composition of the blood
manufactures several plasma proteins such as serum albumen |
|
|
5. Liver
What happens when blood glucose levels fall and glycogen stores are exhausted? |
glucose is produced via gluconeogenesis from amino acids supplied by protein break down
|
|
|
5. Liver
What happens during starvation? |
ketone bodies are formed, these are secreted into the blood stream for use by other tissues
|
|
|
5. Liver
How does it meets its own energy needs? |
it will use a variety of fuels: glucose, amino acids and fatty acids
|
