Life Science: Human Body Systems, Book D

Chapter 5: Control and Coordination

Standardized Test Practice

1
Which part of the brain controls heartbeat and breathing?

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A)cerebellum
B)brain stem
C)cerebrum
D)spinal cord
2
Voluntary muscle movements are coordinated by the

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A)brain stem.
B)cerebrum.
C)cerebellum.
D)spinal cord
3
Information from the senses is interpreted by the

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A)brain stem.
B)cerebellum.
C)spinal cord
D)cerebrum.
4
The basic functioning units of the nervous system are cells called
A)neurons.
B)axons.
C)dendrites.
D)synapses.
5
In some states, the legal blood alcohol percentage limit for driving under the influence of alcohol is 0.06 percent. How many drinks would it take a 72-kg man to exceed this limit?

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A)four
B)one
C)two
D)three
6
Which structure of the eye does light pass through first?
A)cornea
B)lens
C)pupil
D)retina
7
Which of these is a structure of the inner ear?
A)cochlea
B)anvil
C)eardrum
D)ear lobe
8
What is the main function of the semicircular canals?
A)hearing
B)smell
C)vision
D)balance
9
The structure labeled A in the diagram is a(n)

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A)axon.
B)dendrite.
C)synapse.
D)cell body.
10
The structure labeled D in the diagram is either a cell body or a

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A)dendrite.
B)axon.
C)receptor.
D)neurotransmitter.
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