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

Anatomy & Physiology

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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

Anatomy & Physiology

Somatic motor neurons innervate involuntary effectors.

Answer the following statement true (T) or false (F)

Anatomy & Physiology

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.

Anatomy & Physiology

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.

Anatomy & Physiology