Exam 9: Nervous System

Neurons found only in specialized parts of the eyes,nose,and ears are

Neurotransmitters that hyperpolarize post-synaptic membranes are always

Most nerves of the body are mixed nerves.

Normal,quiet,everyday activities like resting and digesting are controlled by this division of the autonomic nervous system.

These neuroglia form the insulating myelin sheath around axons of the central nervous system.

The __________ root of a spinal nerve consists of motor neuron axons.

When 10 or more pre-synaptic neurons conduct impulses to 5 or fewer post-synaptic neurons,the conduction pattern is said to be

The arbor vitae is part of the cerebrum.

Sensory impulses from receptors of the feet reach the brain by way of these.

In the case of a subdural hematoma (blood accumulating beneath the dura)resulting from a blow to the head,blood accumulates

The cardiac and vasomotor centers are located in the

A nerve impulse consists of a wave of __________ potentials moving along the axon of a neuron.

This part of the brain contains the thalamus and hypothalamus and processes sensory information.

Sheaths of myelin produced by ____________ cells often enclose the axons outside of the brain and spinal cord.

The complex network of tiny islands of gray matter in the brain that "awakens" the cerebral cortex is the

Nerves of the peripheral nervous system usually form complex networks called ________.

When a neuron's plasma membrane becomes more permeable to potassium,

Gaps in the myelin sheath are called

Nodes of Ranvier connect adjacent neurons.

Masses of myelinated nerve fibers appear