Chapter 12 Flashcards Preview

A&P 1 > Chapter 12 > Flashcards

Flashcards in Chapter 12 Deck (33)
Loading flashcards...
1

Increases most metabolic rates.

Sympathetic devision

2

Which neurons are classified by function?

Motor neurons
Sensory neurons
Interneurons

3

Nerves atatched to the brain

Cranial nerves

4

Nerves atatched to spinal cord

Spinal nerves

5

Includes all the neural tissue in the body

Nervous system

6

Has cytoplasm around nucleus

Perikaryon

7

Fingerlike extensions of axon that leads to synaptic knob

Telodendria

8

Carry impulses from CNS to peripheral nerves

Efferent division

9

Types of sensory neurons

Proprioceptors
Exterroceptors
Interoceptors

10

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

Synaptic Knob

11

Form a myelin sheath around every peripheral axon

Schwann Cells

12

Highly branched processes that stick out fro the nerve body

Dendrites

13

Thickened region between body and axon

Axon hillock

14

Carries information from CNS to peripheral effectors

Motor neurons

15

Has the synaptic terminal and sends a message

Pre synaptic

16

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

Exteroceptors

17

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

Bipolar

18

Is the synapse between a neuron and a gland

Neuro glandular junction

19

Functions of astrocytes? (3)

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

20

Neuroglia is found where?

PNS and CNS

21

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

Serotonin

22

Decreases most metabolic rates; slows body down.

Parasympathetic division

23

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

Nissl bodies

24

Cell membrane of axon

Axolemma

25

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

Dopamine

26

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

Anticholinesterase drugs.

27

Forms cytoskeleton of cell

Neurofilaments and neurotubules

28

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

Oligodendrocytes

29

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

Wallerian degeneration

30

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

Microglia