Chapter 1

Question 1

Prefrontal Cortex

Answer 1

The cerebral cortex covering the front part of the frontal lobe. This brain region has been implicated planning complex cognitive behavior, personality expression, decision making, and moderating social behavior.

Question 2

sensory neurons

Answer 2

Nerve cells within the nervous system responsible for converting external stimuli from organisms environment to internal electrical impulses.

Question 3

Motor Neurons

Answer 3

efferent neurons that originate in the spinal cord and synapse with muscle fibers to facilitate muscle. contraction and with muscles spindles to modify proprioceptive sensitivity.

Question 4

Interneurons

Answer 4

Transmits impulses between other neurons, especially as part of a reflex arc

Question 5

The Spinal Cord

Answer 5

located in the vertebral foramen and is made up of 31 segments: 8 cervical, 12 thoracic, 5 lumber, 5 sacral, and 1 coccygeal.

Question 6

The cerebellum

Answer 6

Located behind the top part of the brain stem. Receives information from the. sensory. systems, the spinal cord, and other parts of the brains and then regulates motor movements.

Question 7

White matter

Answer 7

The tissue through which messages pass between different areas of gray matter within the CNS

Question 8

Gray matter

Answer 8

Consists of neuronal cell bodies, neuropil, glial cells, synapses, and capillaries

Question 9

Dendrite

Answer 9

A short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.

Question 10

Axons

Answer 10

The long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells