Chapter 12

Question 1

Increases most metabolic rates.

Answer 1

Sympathetic devision

Question 2

Which neurons are classified by function?

Answer 2

Motor neurons
Sensory neurons
Interneurons

Question 3

Nerves atatched to the brain

Answer 3

Cranial nerves

Question 4

Nerves atatched to spinal cord

Answer 4

Spinal nerves

Question 5

Includes all the neural tissue in the body

Answer 5

Nervous system

Question 6

Has cytoplasm around nucleus

Answer 6

Perikaryon

Question 7

Fingerlike extensions of axon that leads to synaptic knob

Answer 7

Telodendria

Question 8

Carry impulses from CNS to peripheral nerves

Answer 8

Efferent division

Question 9

Types of sensory neurons

Answer 9

Proprioceptors
Exterroceptors
Interoceptors

Question 10

Is the round area at the end of neuron where vesicles are located

Answer 10

Synaptic Knob

Question 11

Form a myelin sheath around every peripheral axon

Answer 11

Schwann Cells

Question 12

Highly branched processes that stick out fro the nerve body

Answer 12

Dendrites

Question 13

Thickened region between body and axon

Answer 13

Axon hillock

Question 14

Carries information from CNS to peripheral effectors

Answer 14

Motor neurons

Question 15

Has the synaptic terminal and sends a message

Answer 15

Pre synaptic

Question 16

________ neurons provide information about the external environment in forms of touch, temperature, sight, smell, and hearing.

Answer 16

Exteroceptors

Question 17

In this classification of neurons, cell body is located between one dendrite and one axon.

Answer 17

Bipolar

Question 18

Is the synapse between a neuron and a gland

Answer 18

Neuro glandular junction

Question 19

Functions of astrocytes? (3)

Answer 19

• Maintains blood brain barrier
• Creates a framework for CNS
• Controls interstitial environment by regulating ions, CO2 and other nutrients

Question 20

Neuroglia is found where?

Answer 20

PNS and CNS

Question 21

__________ is found in CNS; important in attention disorders and emotional states.

Answer 21

Serotonin

Question 22

Decreases most metabolic rates; slows body down.

Answer 22

Parasympathetic division

Question 23

Is gray area; clusters of rough endoplasmic reticulum and fixed ribosomes.

Answer 23

Nissl bodies

Question 24

Cell membrane of axon

Answer 24

Axolemma

Question 25

Is found in brain and CNS; may have either excitatory or inhibitory effect

Answer 25

Dopamine

Question 26

Block the breakdown of ACH by acetylcholinesterase, which produces a long constant contraction.

Answer 26

Anticholinesterase drugs.

Question 27

Forms cytoskeleton of cell

Answer 27

Neurofilaments and neurotubules

Question 28

Has slinder extensions but bodies are smaller than astrocytes and can myelinate up to 50 axons in a bundle

Answer 28

Oligodendrocytes

Question 29

If damage occurs to a nerve in PNS, then schqann cells repair nerve using _________________

Answer 29

Wallerian degeneration

Question 30

Is the lease numerous and smallest neuroglia and appears early in embryonic development.

Answer 30

Microglia

Question 31

Are colloidal and columnar cells which line the central nervous canal

Answer 31

Ependymal cells

Question 32

The areas of axons that are not myelinated are called _____

Answer 32

Nodes of ranvier

Question 33

The regions of myelinated axons constitute the _____

Answer 33

White matter