Exam 29: The Nervous System

The ________ root of spinal nerves contains axons of motor neurons only.

Which of the following describes the sympathetic division of the autonomic nervous system?

-Letter B indicates the ________, a bundle of nerve fibers that connects the two hemispheres of the cerebrum.

Which of the following has membranes that contain large amounts of myelin that insulates the axons and allows them to send nerve impulses quickly?

Which of the following are the membranes that protect the brain and spinal cord?

When the sciatic nerve is damaged by excessive pressure on the nerve from prolonged sitting or lying down, the patient has ________.

Efferent nerves transmit nerve impulses to muscles and ________ in the body.

Interconnected cavities within the brain that are filled with cerebrospinal fluid (CSF) are called __________.

The ________, shown at letter C, serves as a relay station for sensory information.

Extending from the cell body of a neuron are axons and dendrites, which are two types of nerve ________.

The ____ causes muscles to contract or relax and glands to secrete products.

A thick bundle of nerve fibers called the ____ connects the two cerebral hemispheres.

Which of the following structures of the spinal cord carries sensory information to the brain?

The ________ acts as a go-between or interpreter between the afferent and efferent nerves.

Which type of headache often has an aura that may appear as jagged lines or flashing lights and the detection of strange odors?

At which vertebral level does the spinal cord end?

Also known as Lou Gehrig's disease, ____ is a degenerative disease of the spinal cord and brain.

When the outside of a neuron's membrane becomes less polar, the neuron has ________.

Chemicals called ________ are released by the synaptic knob to allow impulse transmission to continue to the postsynaptic structures, which consist of the dendrites, cell bodies, and axons of other neurons.

Which type of test can be used to diagnose Alzheimer's and Parkinson's diseases?