An alpha motor neuron and all of the muscle fibers that it innervates is a/an
A. motor pool.
B. action unit.
C. motor unit.
D. recruitment unit.
Question 2Two regions of the cerebral cortex are especially involved with decision-making activities relative to motor behavior, including preparing the motor system for action and the temporal organization of movements. What are these two regions?
A. Premotor cortex and central motor cortex.
B. Occipital cortex and motor cortex.
C. Motor cortex and somatosensory cortex.
D. Supplemental motor cortex and premotor cortex.
Question 3Which of the following body regions would be represented by the largest area on the motor cortex?
A. Thigh.
B. Upper arm.
C. Abdomen.
D. Fingers.
Question 4The brain region that is the site of direct control of skeletal muscular contractions is the
A. supplemental motor cortex.
B. premotor cortex.
C. motor cortex.
D. somatosensory cortex.
Question 5The ______________ is made up of the outer layer of the cerebrum composed of gray matter. It is the major site of higher brain functions such as abstraction, reasoning, decision-making, and voluntary motor control.
A. cerebral cortex
B. somatosensory cortex
C. Central cortex
D. Parietal cortex
Question 6The cerebellum and the ________________ cooperate closely in controlling human movement. The cerebellum initiates excitatory commands to muscles, exciting greater muscular activity, whereas inhibitory commands are initiated by the ________________, reducing or inhibiting muscular activity. These structures can be thought of as on and off switches controlling the amount of muscular activity as required. What is the name of the structure needed to fill in the blanks?
A. Hippothalamus.
B. Thalamus.
C. Basal ganglia.
D. Hippocampus.
Question 7Which structure below plays a major role in controlling body temperature and energy use?
A. Thalamus.
B. Hippocampus.
C. Basal ganglia.
D. Hypothalamus.
Question 8One of the major parts of the brain, this structure plays an essential role in motor coordination, muscle tone, balance, and the learning of motor skills. Together with the brain stem, it forms the area of the brain often called the hindbrain. What is the name of this brain structure?
A. Cerebellum.
B. Cerebrum.
C. Hypothalamus.
D. Hippocampus.
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