A motor unit is defined as _______.
A) a nerve and a muscle
B) the axon terminals of a single motor neuron and all of the muscle fibers that it stimulates
C) a single neuron and a single muscle fiber
D) a single muscle fiber and all its axon terminals
Answer: B) the axon terminals of a single motor neuron and all of the muscle fibers that it stimulates
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The region of the brain responsible for predicting the consequence of events or actions is the
A) prefrontal cerebral cortex. B) occipital association cortex. C) reticular formation. D) temporal lobe. E) premotor cortex.
Somatic motor neurons innervate involuntary effectors.
Answer the following statement true (T) or false (F)
LouAnn is being treated for a neurological condition with a specific drug that target neurons deep within the brain. Which glial cell must be bypassed by this drug in order for it to be effective?
A. Ependymal cell B. Macrophage C. Oligodendrocyte D. Astrocyte E. Microglia
When arterioles constrict, it raises arterial blood pressure and increases the volume of forward flow into the veins, while constriction in veins reduces forward flow by decreasing pressure in the atria
Indicate whether the statement is true or false.