1.A majority of the muscles in the body are classified as a.cardiac b.skeletal c

Question

1.A majority of the muscles in the body are classified as
a.cardiac
b.skeletal
c.smooth
d. neurons
e.none of the above
2. The____ is the master control system of the body.
a. central nervous system
b. peripheral nervous system
c. endocrine system
d. cardiovascular system
e. none of the above
3. Elevated ridges called fissures are separated by depressed areas called gyri.
a. true
b. false
c. cannot be determined
4. Relaxation is a characteristic of what part of the nervous system?
a. automatic
b. somatic
c. parasympathetic
d. sympathetic
e. none of the above
5. The nervous system brings about________ control using chemical messengers called_____.
a. rapid; nerve impulses
b. slow; hormones
c. rapid; hormones
d. slow; nerve impulses
e. none of the above
6. The skeletal muscles are multinucleated. These multiple nuclei are called
a. soma
b. neurons
c. sarcolemma
d. macrophages
e. leukocytes

Explanation / Answer

1. B

2. A

3. False - a fissure is a groove or deep furrow, the complete opposite of a ridge.

4. C

5. C -- I think. The wording on this question confused me because the nervous system uses horomones to command a rapid response (sympathetic nervous response to environmental stressors). If the question does not intend for 'control' to be somehow synonymous with 'response' then the answer would be "E".

6. I honestly do not see a correct answer in the choices offered... Let me explain: The term soma is used to describe a cell body, this term is also used to refer to the portion of a nerve cell that houses the nucleus. Neurons are nerve cells. The sarcolemma is the membrane that surround the exterior surface of a muscle. A macrophage is a type of phagocytic leukocyte, and a leukocyte is a white blood cell. (If you look each of these terms up in your textbook I'm positiv you will find definitions analogous to what I have provided.) I would advise you to argue the validity of this question with your instructor.

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