Integrative Tissue Metabolism.

Question 1

What is Adipose tissue made of?

Answer 1

Adipocytes (fat cells).

Question 2

What is metabolic activity of Adipose Tissue?

Answer 2

Very metabolically active. 2nd to only Skeletal Muscle.

Question 3

How does Adipose Tissue respond?

Answer 3

Through hormones.

Question 4

What percentage mass of a young adult is Adipose tissue?

Answer 4

15%.

Question 5

How is the energy of TAG released?

Answer 5

When hormones signal need for metabolic energy, the TAG’s are mobilised and transported to tissues.

Question 6

What happens to the actual stuff in TAG for energy production?

Answer 6

Fatty acids are oxidised via BETA-oxidation to produce energy and Glycerol can be used for energy production or GNG.

Question 7

At rest, what percentage of the energy can be attributed to skeletal muscle?

Answer 7

20%.

Question 8

During active muscular work, what percentage of the energy can be attributed to skeletal muscle?

Answer 8

90%.

Question 9

What can Skeletal Muscle use as energy?

Answer 9

EVERYTHING.

Question 10

What is the energy source for skeletal muscle at rest?

Answer 10

Fatty acids from adipose. 80%.

Question 11

What is the energy source for skeletal muscle at short bursts of energy?

Answer 11

Creatine Phosphate.

Question 12

What is short burst?

Answer 12

First few minutes.

Question 13

What enzymes the synthesis of creatine phosphate?

Answer 13

Creatine phosphokinase.

Question 14

What is the energy source for skeletal muscle at moderately active?

Answer 14

Glucose from it’s own glycogen stores and Liver’s stores and fatty acids and ketones.

Question 15

What is the energy source for skeletal muscle at extremely active?

Answer 15

Muscle glycogen –> Lactate. Cori cycle also occurs in liver where the lactate will be converted to glucose.

Question 16

What is the energy source for skeletal muscle at starvation?

Answer 16

Ketosis or protein breakdown.

Question 17

Rate of metabolism for cardiac muscle?

Answer 17

High metabolism, continually active.

Question 18

What lipid and glycogen stores does cardiac muscle have?

Answer 18

Not much.

Question 19

What is the primary fuel for heart muscle?

Answer 19

Fatty acids.

Question 20

What type of respiration does the heart muscle undergo?

Answer 20

Aerobic.

Question 21

What other fuels can the cardiac muscle use?

Answer 21

Glucose and ketones.

Question 22

What fuel reserves does brain muscle have?

Answer 22

None.

Question 23

What is the primary fuel source?

Answer 23

Glucose from diet or liver.

Question 24

What does brain use in fasting conditions?

Answer 24

Ketones. They can cross blood barrier.

Question 25

Can brain use fatty acids?

Answer 25

No. They cannot cross Blood-brain-barrier.

Question 26

What respiration to RBC’s do?

Answer 26

Anaerobic.

Question 27

What cell has the highest rate of glucose utilisation in the body?

Answer 27

RBC’s.

Question 28

What is RBS’s fuel source?

Answer 28

Glucose.