Chapter 35.2 - 35.3 Nervous Systems Test

_____ carry messages from one cell to another so that communication among all body parts is smooth and efficient

• specialized cells

• neuron cells

• somatic cells

_____controls and coordinates functions throughout the body and responds to internal and external stimuli

• The nervous system

• the somatic system

• the peripheral nervous system

The messages carried by the nervous system are electrical signals called____

• impulses

• dendrites

• axon

• nodes

Neurons can be classified into _____ types according to the direction in which an impulse travels

• three

• two

• one

• four

The ____ contains the nucleus and much of the cytoplasm

• cell body

• nodes

• dendrite

• axon terminal

Most of the ____ processes of the cell take place in the cell body

• metabolic

• acidic

• functional

• important

_____ carry impulses from the environment or from other neurons toward the cell body

• Dendrites

• Schwan Cell

• Myelin Sheath

• Threshold

The axon ends in a series of small swellings called _______, located some distance from the cell body

• axon terminals

• axons

• nucleus

• cell body

_____ have dozens of dendrites but usually have only one axon

• neurons

• cell body

• cytoplasm

• axon

As an impulse moves along the axon, it jumps from one node to the next, which increases the speed at which the impulse can travel

• True

• False