chapter 11 part 1

Question 1

Two main cell types in nervous tissue:

Answer 1

neurons and glial cells

Question 2

what is a nerve

Answer 2

a bundle of axons outside the brain and spinal cord.

Question 3

cranial nerves

Answer 3

originate from the brain; 12 pairs.

Question 4

spinal nerves

Answer 4

originate from spinal cord; 31 pairs.

Question 5

ganglion

Answer 5

collection of neuron cell bodies outside the brain
and spinal cord.

Question 6

plexus

Answer 6

extensive network of axons, and sometimes
neuron cell bodies, located outside C NS.

Question 7

glial cells

Answer 7

supportive cells with many functions.

Question 8

Maintaining homeostasis

Answer 8

Regulate and coordinate activities to maintain
balance.

Question 9

Receiving sensory input

Answer 9

Monitor internal and external stimuli.

Question 10

Integrating information

Answer 10

Brain and spinal cord process sensory input and
initiate responses.

Question 11

Establishing and maintaining mental activity:

Answer 11

Consciousness, thinking, memory, emotion.

Question 12

Central nervous system (CNS):

Answer 12

brain and spinal cord.

Question 13

Peripheral nervous system (PNS):

Answer 13

sensory receptors and nerves

Question 14

divisions of PNS

Answer 14

sensory, sensory receptors, motor

Question 15

Sensory (afferent)

Answer 15

transmits action potentials from receptors toward the CNS.

Question 16

Sensory receptors

Answer 16

Can be neuron endings or specialized cells that detect
external and internal stimuli; send input along nerves to brain or spinal cord.

Question 17

Motor (efferent)

Answer 17

transmits action potentials from CNS to effectors (muscles, glands).