Chp 9 Muscles

Question 1

All skeletal muscle is derived only from the myotome T or F?

Answer 1

False: some head and neck muscles are derived from mesenchyme

Question 2

What system develops from the sclerotome of the somite?

Answer 2

skeletal

Question 3

The dermamyotome only gives rise to the dermatome of the skin - T or F?

Answer 3

False: The dermamyotome develops into the dermatome and the myotome. The myotome gives rise to muscles

Question 4

The muscular system develops from the mesoderm layer, T or F?

Answer 4

True. Even though we talk about the muscular system developing from the myotome it’s important to remember that the myotome develops from the somites in the the mesoderm layer of the trilaminar disc.

Question 5

The Iris develops from the mesoderm layer, Tor F?

Answer 5

False: The iris develops from the nueroectoderm

Question 6

Skeletal muscles are derived from the myotomes of somites T or F?

Answer 6

True

Question 7

Epimere (epiaxial) form the ______ muscles of the _____ _____

Answer 7

extensor muscles of the vertebral column