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Physiology > Introduction to the Nervous System > Flashcards

Introduction to the Nervous System Flashcards

1
Q

Afferent or efferent nerves are used for assessment?

A

Afferent

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2
Q

Afferent or efferent nerves are used for control and coordination?

A

Efferent

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3
Q

Is there endocrine singaling in the nervous system?

A

No
Paracrine
Autocrine only

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4
Q

What are the neurotransmitters used in a parasympathetic reflex arc? Sympathetic?

A

Acetylcholine, acetylcholine

Acetycholine, norepiinephrine

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5
Q

What are the components of the CNS?

A

Brain & spinal cord

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6
Q

What are the components of the peripheral nervous system?

A

Somatic

Outside brain & spinal

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7
Q

What are the divisions of the autonomic nervous system?

A

Parasympathetic & sympathetic

Visceral & somatic nervous system

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8
Q

What are the 3 plexuses of the enteric nervous system?

A

myenteric, submucosal, Mucosal

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9
Q

What are the supportive cells of the neroglia?

A

Astrocytes, oligodendrocytes
Schwann cells
Satellite cells

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10
Q

What is the 1st transmitter of the sensory reflex arc? 2nd?

A

Glutamine

Acetylchline

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11
Q

Will a reflex arc ever produce a variable response? How is this response described?

A

No

Reflexes are stereotypic

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12
Q

What are the 5 components of the reflex arc?

A 
Sensors
myelinated afferent neuron
Integration/processing
myelinated efferent neuron
Effector organ
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13
Q

What is the logic gate of the nerve cell?

A

Axon hillock

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14
Q

Why do nerve cells also have some autocrine function?

A

Re-uptake & regulation of singal

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15
Q

What are the primary sensory components and signal integration of the nerve cell?

A

Dendrites & soma

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16
Q

What is the metabolic center of the cell/where does neurotransmitter synthesis take place?

A

Soma

17
Q

Does signal integration occur along axon?

A

No

18
Q

What is the site for excitation-secretion coupling and sometimes neurotransmitter uptake?

A

Axon terminal

19
Q

Which synaptic membrane contains Ca2+ voltage gated channels?

A

Presynaptic

20
Q

What channels are present on the postsynaptic membrane?

A

ionotropic neurotransmitter receptors & voltage-gated cation channels (Na+)

21
Q

How many passes do ion channels (Na, K, Ca) make through the membrane?

A

6

22
Q

How fast can signals travel on a myelinated axon?

A

360ft/s

23
Q

What neuroglia cells are associated with ganglia?

A

Satellite cells

24
Q

How do astrocytes (CNS) function for uptake?

A

Take up excess K+ to maintain proper ECF

Take up and degrade GABA, Glutamate,etc

25
Q

Which CNS cells are important for the blood-brain barrier?

A

Astrocytes

26
Q

What is the function of ependymal cells?

A

Form tight junctions & line brain and spinal cavity

Physiology (45 decks)

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