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Test 5 Nervous system/tissue > Main functions, organization, and histology of nervous tissue > Flashcards

Main functions, organization, and histology of nervous tissue Flashcards

1
Q

What are the 2 main controlling systems of the body?

A

endocrine

nervous

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2
Q

How does the speed of the endocrine and nervous system differ?

A

endocrine is slow

nervous is fast

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3
Q

What are the 3 main functions of the nervous system?

A

sensory
integrative
motor

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4
Q

stimulus is detected as sensory input

A

sensory function of nervous system

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5
Q

stimulus is interpreted and change is communicated

A

integrative function of nervous system

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6
Q

causes a response, stimulates a muscle or gland to act

A

motor function of nervous system

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7
Q

Organization of the Nervous System:

What are the 2 branches of the CNS?

A

brain

spinal cord

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8
Q

Organization of the Nervous System:

What are the 2 branches of the PNS?

A

motor (efferent) division

sensory (afferent) division

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9
Q

Organization of the Nervous System:

What are the 2 branches of the motor (efferent) division of the PNS?

A

somatic nervous system (voluntary)

autonomic nervous system (involuntary)

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10
Q

Organization of the Nervous System:
What are the 2 branches of the ANS (involuntary)?
ANS stems from the motor division of the PNS.

A

sympathetic division

parasympathetic division

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11
Q

What are the 2 main types of nervous tissue?

A

neurons

neuroglia

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12
Q

What are the 9 parts of a neuron?

A 
cell body (soma) 
chromatophilic substance (Nissl bodies) 
nuclei/ganglia 
dendrites 
axon 
axon hillock 
axon collaterals 
axon terminals 
synapse
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13
Q

aka soma, contains the nucleus, typical organelles plus chromatophilic substance. It is the main metabolic and nutritional area. An input and integrative region of the neuron.

A

cell body aka soma

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14
Q

nucleus
organelles
chromatophilic substance

A

cell body aka soma

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15
Q

main metabaolic and nutritional area

A

cell body aka soma

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16
Q

input and integrative region of neuron

A

cell body aka soma

17
Q

specialized clustered RER and free ribosomes

A

chromatophilic substance (Nissl bodies)

18
Q

What are nuclei?

A

clusters of cell bodies in the CNS

19
Q

What are ganglia?

A

clusters of cell bodies in the PNS

20
Q

branches/extensions that recieve signals (receptive region) from other neurons. They are not myelinated and they have a large surface are to provide an input area.

A

dendrites

21
Q

Are dendrites myelinated?

A

no

22
Q

process or extension that propagates the messsage to another neuron, muscle, or gland. Conductive region generates an action potential.

A

axon

23
Q

What does the conductive region of the axon do?

A

generates an action potential

24
Q

What are the 3 areas that the axon can propagate the message to?

A

neuron
muscle
gland

25
Q

cone shaped part of the axon that emerges from the cell body, and acts as the “trigger zone” for the generation of action potentials

A

axon hillock

26
Q

What shape is the axon hillock and where does it emerge from?

A

cone shaped

emerges from the cell body

27
Q

What is the “trigger zone” for the generation of action potentials?

A

axon hillock

28
Q

Side branches of the axon usually at a right angle from the original axon.

A

axon collaterals

29
Q

At what angle is the axon collaterals?

A

usually a right angle from original axon

30
Q

aka synaptic terminals,

A

axon terminals

31
Q

the bulb like structures at the end of the terminal branches of the axon

A

axon terminals aka synaptic terminals

32
Q

The junction either between two neurons or a neuron and a gland or a neuron and a muscle

A

synapse

33
Q

Where are the 3 places a synaps can be?

A

between 2 neurons
neuron and gland
neuron and muscle

34
Q

What are the 2 cells that are involved in the synapse?

A

presynaptic

postsynaptic

Test 5 Nervous system/tissue (13 decks)

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