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Flashcards in Chapter 12 Deck (33)
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1
Q

Increases most metabolic rates.

A

Sympathetic devision

2
Q

Which neurons are classified by function?

A

Motor neurons
Sensory neurons
Interneurons

3
Q

Nerves atatched to the brain

A

Cranial nerves

4
Q

Nerves atatched to spinal cord

A

Spinal nerves

5
Q

Includes all the neural tissue in the body

A

Nervous system

6
Q

Has cytoplasm around nucleus

A

Perikaryon

7
Q

Fingerlike extensions of axon that leads to synaptic knob

A

Telodendria

8
Q

Carry impulses from CNS to peripheral nerves

A

Efferent division

9
Q

Types of sensory neurons

A

Proprioceptors
Exterroceptors
Interoceptors

10
Q

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

A

Synaptic Knob

11
Q

Form a myelin sheath around every peripheral axon

A

Schwann Cells

12
Q

Highly branched processes that stick out fro the nerve body

A

Dendrites

13
Q

Thickened region between body and axon

A

Axon hillock

14
Q

Carries information from CNS to peripheral effectors

A

Motor neurons

15
Q

Has the synaptic terminal and sends a message

A

Pre synaptic

16
Q

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

A

Exteroceptors

17
Q

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

A

Bipolar

18
Q

Is the synapse between a neuron and a gland

A

Neuro glandular junction

19
Q

Functions of astrocytes? (3)

A
  • Maintains blood brain barrier
  • Creates a framework for CNS
  • Controls interstitial environment by regulating ions, CO2 and other nutrients
20
Q

Neuroglia is found where?

A

PNS and CNS

21
Q

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

A

Serotonin

22
Q

Decreases most metabolic rates; slows body down.

A

Parasympathetic division

23
Q

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

A

Nissl bodies

24
Q

Cell membrane of axon

A

Axolemma

25
Q

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

A

Dopamine

26
Q

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

A

Anticholinesterase drugs.

27
Q

Forms cytoskeleton of cell

A

Neurofilaments and neurotubules

28
Q

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

A

Oligodendrocytes

29
Q

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

A

Wallerian degeneration

30
Q

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

A

Microglia

31
Q

Are colloidal and columnar cells which line the central nervous canal

A

Ependymal cells

32
Q

The areas of axons that are not myelinated are called _____

A

Nodes of ranvier

33
Q

The regions of myelinated axons constitute the _____

A

White matter