Lecture 6 Part 2 - MC

Question 1

What is the blood supply rate to the brain per 100g of brain tissue per minute?

A) 2-5 ml
B) 10 ml
C) 20 ml
D) 50 ml

Answer 1

D) 50ml/min/100g

Question 2

Which of the following is primarily prevented from accessing the brain by the blood-brain barrier (BBB)?

A) Lipid-soluble molecules
B) Water-soluble molecules
C) Glucose
D) Oxygen

Answer 2

A

Question 3

Under normal conditions, what is the main product of glucose metabolism in the brain?

A) Lactate
B) CO2
C) ATP
D) Ketones

Answer 3

B

Question 4

What metabolic adaptation occurs in the brain under prolonged starvation?

A) It uses more glucose.
B) It increases its use of lactate.
C) It begins to use ketones.
D) It reduces its metabolic rate.

Answer 4

C

Question 5

Where are ketones produced that serve as an alternative energy source for the brain during starvation?

A) In the brain itself
B) In skeletal muscles
C) In the liver
D) In the pancreas

Answer 5

C