Exam 9: Nervous System

The two major types of cells found in nervous tissue are

During an action potential,repolarization occurs as a result of

The first component of a reflex arc is a(n)

When a neuron's membrane becomes more permeable to sodium,the neuron

Neurons that release acetylcholine are ____________ neurons;those that secrete norepinephrine are ___________.

This structural type of neuron includes most neurons whose cell bodies lie within the central nervous system.

Ischemic cell damage is caused by a lack of blood flow,which deprives cells of

Composed of the midbrain,pons,and medulla oblongata,this portion of the brain regulates certain visceral activities such as heart rate and breathing.

This structural type of neuron has a single process that extends from the cell body.

Which of the following lists parts of a reflex arc in the correct sequence?

Neurons that conduct impulses into the brain or spinal cord are functionally classified as

In a resting neuron,the difference in charges between the outside and inside of the membrane is called a(n)

The spinothalamic tract conducts impulses

These neuroglia produce the myelin sheath on neurons of the peripheral nervous system.

Interneurons are specialized to carry impulses from peripheral receptors into the brain or spinal cord.

The most abundant cation within cells is ________;the most abundant cation outside of cells is ________.

The subarachnoid space within the meninges contains cerebrospinal fluid.

This outer meninx is composed mostly of white fibrous connective tissue and contains many blood vessels and nerves.

Action potentials reaching the synaptic knob open voltage-gated ________ channels,triggering synaptic vesicles to release neurotransmitter.

A deficiency of calcium in the body can result in involuntary muscle contractions.