Page 186 - 86 human physiology part-2

Appendix A: Answers to Review Questions

F ) both a & b

4. Sensory neurons have:

A ) A short dendrite and a long axon
B ) A short dendrite and a short axon
• C ) A long dendrite and a short axon
D ) A long dendrite and a long axon
E ) Their axons and dendrites may be either long or short

5. ________blocks Acetylcholine receptor sites causing muscle relaxation.

A ) Novocain
• B ) curare
C ) Nicotine
D ) Nerve gases

6. Transmission across a synapse is dependent on the release of _______?

• A ) neurotransmitters
B ) synaptic vesicle
C ) neurons
D ) receptor proteins

7. Motor neurons take messages

A ) from the muscle fiber to the central nervous system
B ) away from the central nervous system to the central nervous system
C ) that are classified
• D ) away from the central nervous system to muscle fiber

8. The medulla oblongata helps to regulate which of the following:

A ) Breathing
B ) Heartbeat
C ) Sneezing
D ) Vomiting
• E ) All of the above

Senses

1. Located under the hardest bone in the body, these control not only hearing but also a sense of
gravity and motion:

A) The incus and the stapes
B) The pinna and the ear drum
• C) the vestibular nerve and the semi circular canals
D) The eustachian tube and the stapes

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