Question

#1: Answer part A, B, C, and D of number 1

A. Which describes the function of astrocytes?

1. Control how neurons communicate at the synapse

2. Guide the development and differentiation of neurons and glial cells

3. Physically support neurons in the CNS to create proper spatial relationships

4. Provide the immune defense for the CNS

5. Serve as neurons after neural tissue damage for a short time during repair

B. Which best describes second class levers?

1. The muscle force and resistive force act on opposite sides of the fulcrum and the effort required to move the load of mechanical advantage

2. The muscle force and resistive force act on opposite sides of the fulcrum, but the effort requires to move the load is at a mechanical advantage

3. The muscle force and resistive force act on the same side of the fulcrum, with a longer moment arm for the effort than for the load

4. The muscle force and resistive force act on the same side of the fulcrum with a longer moment arm for the load than for the effort

C. Which of the following describes the method by which fibers tend to migrate during later neuronal development?

1. Chemeotic migration

2. Embryonic migration

3. Radial migration

4. Tangential migration

5. Trophic migration

D. _______ blood vessels is found in the anterior segment of the brain

1. Anterior communicating artery

2. Anterior inferior cerebellar artery

3. Pontine artery

4. Posterior cerebral artery

5. Superior cerebellar artery

Answer 1

1. Answer: Option A is correct
Explanation:
Functions of astrocytes
a. Regulation of blood flow throgh the CNS
b. Regulation and maintainance of synapse

2. Answer: Option C is correct
Explanation:
Second class lever:
a. Load and effort are on the same side of the fulcrum
b. Longer moment are for the effort than the load

3. Answer: Option D is correct
Explanation:
The method by which fibers tend to migrate during later neuronal development - Tangential migration