Author Question: Long, fingerlike extensions from the core of growth cones are known as a. microtubules. b. ... (Read 18 times)

B · **on:** Jun 21, 2018

Long, fingerlike extensions from the core of growth cones are known as

a. microtubules.
b. filopodia.
c. lamellipodia.
d. cell adhesion molecules.

Question 2

What happens to the rate of firing in motor neurons as we age?

a. No changes occur.
b. Firing rates decrease, leading to slower and weaker muscle responses.
c. Firing rates increase, leading to uncomfortable cramping.
d. Firing rates decrease, but muscle fibers are able to compensate for these changes.