Chapter 11 Part 1

Question 1

What are the 3 main functions of the nervous system?

Answer 1

Sensory input

Integration

Motor Output

Question 2

What are the 2 organs of the central nervous system (CNS)?

Answer 2

Brain and spinal cord

Question 3

What are the 2 functional divisions of the peripheral nervous system (PNS)?

Answer 3

1. ) Sensory (afferent) division
2. ) Motor (efferent) division

Question 4

Which nervous system is responsible for conscious control of skeletal muscles?

Answer 4

Somatic nervous system

Question 5

Which nervous system regulates smooth muscle, cardiac muscle, and glands?

Answer 5

Autonomic nervous system

Question 6

What are the 2 principal cell types of the nervous system?

Answer 6

1. ) Neurons- excitable cells that transmit electrical signals
2. ) Supporting Cells- cells that surround and wrap neurons

Question 7

What are the most abundant, versatile, and highly branched glial cells called?

Answer 7

Astrocytes

Question 8

______ are small, ovoid cells with spiny processes.

They are also phagocytes that monitor the health of neurons.

Answer 8

Microglia

Question 9

______ cling to neurons and their synaptic endings, and cover capillaries.

Answer 9

Astrocytes

Question 10

_______ range in shape from squamous to columnar, are ciliated, they line the central cavities of the brain and spinal column, and also produce cerebrospinal fluid.

Answer 10

Ependymal cells

Question 11

What are the structural units of the nervous system called?

Answer 11

Neurons

Question 12

What is movement along axons toward an axonal terminal called?

Answer 12

**Anterograde **- toward axonal terminal

Question 13

What is movement along axons away from an axonal terminal?

Answer 13

Retrograde - away from axonal terminal