Exam 18: Nervous System Cells

Explain the types of reflex arc. Differentiate between a contralateral reflex arc and an ipsilateral reflex arc.

Which of the following is not true of a three-neuron ipsilateral reflex?

In an ipsilateral arc, the effectors and receptors are on opposite sides of the body.

Interneurons reside in the:

Name the two ways in which neurons are classified. Name and describe the types of neurons in each classification.

Describe the somatic and autonomic nervous systems.

The axon hillock is actually part of the cell body of the neuron.

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

Name two types of tissue that are effectors.

Which is true of a reflex arc?

What protein molecule very similar to hemoglobin temporarily stores a "backup" supply of oxygen in nervous tissue?

Match each term with its definition or description. -Fatty sheath around nerve fibers made by Schwann cells

Match each of the following cell types with its corresponding description. -Produces the myelin sheath around nerve fibers in the CNS

Most of the neurons in the brain and spinal cord are unipolar.

Cranial nerves are considered part of the CNS.

Neurons in the CNS have less chance of regenerating for all of the following reasons except:

Match each part of the nervous system with its corresponding description. -Subdivision of the efferent division that transmits information to smooth muscle, cardiac muscle, and glands

If a skeletal muscle moved, it would be responding to the somatic nervous system.

Match each part of the nervous system with its corresponding description. -Consists of all the outgoing pathways

Dendrites have many synaptic knobs so they can receive impulses from several other neurons at the same time.