Exam 18: Nervous System Cells

In an adult, brain cells do not undergo mitosis, except to replace neurons that have been damaged or destroyed.

One distinction between ipsilateral and contralateral reflexes is that contralateral reflexes have interneurons and ipsilateral reflexes do not.

The afferent pathways of the autonomic nervous system:

Part of the function of the astrocyte is to help feed the neurons.

In the human nervous system:

What comprises the CNS?

The parasympathetic nervous system is part of the _____ pathway of the _____ nervous system.

Which of the following is the deepest connective tissue layer of a nerve?

Which is not true of the myelin sheath?

Match each term with its definition or description. -Distal tips of these nerve fibers end in branches called telodendria

In a three-neuron reflex arc, the afferent neurons synapse with the:

Multipolar neurons have:

In neurons, microtubules are called neurofibrils.

A neuron that transmits a nerve impulse toward the central nervous system is called a(n):

Only axons are covered in myelin.

Ependymal cells act like epithelial cells in the CNS, forming thin sheets that line cavities.

Match each part of the nervous system with its corresponding description. -Consists of the brain and spinal cord

Whether a group of nerve fibers is called a nerve or a tract depends on its location.

Microglia are functionally and developmentally very close to neurons.

Name two types of tissue that are effectors.