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A&P- Nervous System > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

How many bones are found in the spinal cord?

A

31

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2
Q

How many pairs of nerves are found in the spinal cord?

A

31 PAIRS

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3
Q

What is the outermost layer that provides protection for the spinal cord?

A

Vertebrae

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4
Q

Which root provides the means through which sensory impulses are conducted?

A

Dorsal/Posterior root

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5
Q

How many nerves are found in the thoracic region of the spine?

A

12 pairs

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6
Q

What keeps a neuron’s axon very negative?

A

An electrical gradient

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7
Q

Where does the spinal cord start?

A

Medulla oblongata

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8
Q

How does a neurotransmitter enter a neuron?

A

Through the dendrites

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9
Q

If the axon of a neuron was very positive then all the neurotransmitters would have to be what charge?

A

Negative

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10
Q

Which root allows for the transmission of motor impulses?

A

Ventral/Anterior root

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11
Q

What is the main function of the spinal cord?

A

To send information

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12
Q

The space between the arachnoid and dura mater is known as?

A

Subdural

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13
Q

What is the inside layer of the meninges called?

A

PIA mater

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14
Q

What is the purpose of the meninges ?

A

Provide support & allows cerebrospinal fluid to travel within the spine

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15
Q

Between what layers of the meninges is epidural fluid, space found?

A

Between the meninges & the vertabrae

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16
Q

Which layer of the meninges is known as the tough mother?

A

DuraMater

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17
Q

The CX nerves are found where along the spinal cord?

A

Coccygeal

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18
Q

Most back problems originate from the lower back. What is another name for this region?

A

Lumbar

19
Q

What charge are most neurotransmitters?

A

Positive

20
Q

List atleast 4 different neurotransmitters

A

Calcium
Dopamine
Chloride
Sodium

21
Q

Nerve impulse is the way that ?

A

The nervous system communicates

22
Q

Positive charge is also. Known as

A

Anion

23
Q

Negative charges are also known as

A

Cation

24
Q

Outside of the axon is what charge?

A

Positively charged

25
Q

Inside of the axon is what charged?

A

Negatively charged

26
Q

Neurotransmitters are stored in?

A

Vesicles

27
Q

How long is the spinal cord?

A

16-18 inches long

28
Q

How many layers does the meninges have?

A

3 DuraMater, arachnoid mater, piamater

29
Q

Space between the meninges and the vertabrae that provides support & cushion

A

Epidural space

30
Q

Space Located between the arachnoid and Pia Mater

A

Subarachnoid space

31
Q

Define tract

A

A bundle of nerve fibers located inside the CNS

32
Q

Define Ganglia

A

Nerve cells found right outside the CNS

They’re UnMyelAted(no myelin sheaths)

33
Q

Attaches all the sensory nerves to the spinal cord

A

Dorsal/posterior root

34
Q

Attaches all motor nerves to the spinal cord

A

Ventral/ Anterior Root

35
Q

Which root is an ascending tract

A

Dorsal/Posterior

36
Q

Which root is a descending tract?

A

Ventral/Anterior Root

37
Q

C1-C8

A

Cervical nerves

38
Q

T1-T12

A

Thoracic nerves

39
Q

L1-L5

A

Lumbar Nerves

40
Q

S1-S5

A

Sacral nerves

41
Q

Pia Mater= delicate mother {Inside layer}

A

Attaches to the spinal cord & provides bloody supply

Forms a clear thin membranous connective tissue

42
Q

Arachnoid layer= spider layer {Middle Layer}

A

Forms delicate fibrous connective tissue

43
Q

DuraMater=Tough Mother {Outside Layer}

A

Forms a thought tube of white fibrous connective tissue

A&P- Nervous System (5 decks)

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