Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy Test II > nerves! > Flashcards

nerves! Flashcards

1
Q

posterior ramus of C1 =

innervates

A

is the suboccipital nerve

MOTOR innervation [[suboccipital triangle muscles]]

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

posterior ramus of C2 =

innervates

A

GREAT occipital nerve

sensory ! -> occipital area,
lies laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

posterior ramus of C3 =

innervates

A

posterior ramus of c3 = THIRD occipital nerve

sensory! -> occipital area
lies medially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

anterior rams of c2-c3 =

innervates

A

anterior ramus of c2 - 3= LESSER occipital nerve
lies laterally

SENSORY! -> posterior to auricle, lies outside region of suboccipital triangle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

bipolar neurons =

A

usually special sensory neurons
found in olfactory epithelium, retina, inner ear

also interneurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

interneurons of the spinal cord are

A

BIPOLAR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

unipolar neurons are

A

general sensory neurons of the peripheral nervous system

pain, proprioception, temperature, these are in the dorsal root ganglion,

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

neurons are in the dorsal root ganglion are :

A

UNIPOLAR neurons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

most common type of neuron in CNS

A

multipolar neuron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

more abundant than neurons are

A

neuroglia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

somatic nervous system provides

A

general sensory and motor innervation to all parts of the body except VISCERA IN THE BODY CAVITIES, SMOOTH MUSCLE AND GLANDS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

gray matter of spinal cord is divided

A

into 10 laminae .

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

laminae 1 - 6

A

dorsal gray matter = somatic SENSORY fibers [[cell bodies]]

DORSAL so carry afferent, sensory fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

laminae 7 - 9

A

ventral gray matter = somatic MOTOR fibers

efferent motor fibers, cause ventral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

laminae 10

A

surrounds central canal = neuroglia cells and does not play a significant role in relay of information

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ascending tracts of white matter contain

A

ASCENDING, AFFERENT, sensory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Descending tracts of white matter contain

A

DESCENDING, efferent, motor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Tracts of white matter are divided into

A

ventral, lateral, dorsal columns.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

dorsal column ascending tract

A

made of gracilus and cuneatus.

FINE TOUCH AND PROPIOCEPTION

20
Q

lateral spinothalamic tract

A

PAIN, nociceptive, and temperature

21
Q

ventral spinothalamic tract

A

crude touch and pressure

22
Q

lateral spinothalamic tract + ventral spinothalamic tract

A

ANTEROLATERAL spinothalmic tract

23
Q

tract lissauer

A

part of spinothalamic tract

24
Q

lateral corticospinal tract

A

LIMB motor

25
Q

ventral corticospinal tract

A

posture motor

26
Q

each sensory pathway consists of

A

3 neurons

27
Q

dorsal column-medial lemniscal system :

A

transmits FINE TOUCH, PROPIOCEPTION, VIBRATION , PRESSURE

HIGH level of localization, discrimination

therefore large, myelinated, very fast conducting fibers

28
Q

DCML 1st order neuron of sensory pathways

A

enters spinal cord from dorsal root ganglion, relays sensory information from dorsal column to medulla, ascends on same side side to medulla.

29
Q

DCML 2nd order neuron of sensory pathways

A

from medulla, crosses to opposite side than ascends to thalamus via medial lemniscus

30
Q

DCML 3rd order neuron of sensory pathways

A

from thalamus to post central grays

31
Q

post central gyrus =

A

somatosensory cortex on parietal lobe

32
Q

anterolateral spinothalamic tract

A

transmits pain and temperature [lateral portion]
crude touch and pressure [ventral portion]

smaller unmyelinated, slower conducting fibers
not able to localize as well, poorly discriminate

33
Q

substantia gelatinosa

A

laminae II and III - where pain neurons synapse

34
Q

ALS 1st Order Neuron

A

enters spinal cord via dorsal root ganglion may then go up or down 1 to 3 levels via lissaur’s tract. Synpases in dorsal laminae I, IV, V, VI,

35
Q

ALS 2nd order neuron

A

crosses to opposite side, ascends to brain via either anterior or lateral spinothalamic tracts synapses in thalamus

36
Q

ALS 3rd order:

A

thalamus to post central gyrus

37
Q

corticospinal motor tract

A

also known as pyramidal tract

motor neurons exit pre central gyrus of frontal lobe and travel through the pyramids of medulla

38
Q

lateral corticospinal tract CROSSES

A

crosses over to contralateral side in medulla then descend the spinal cord via lateral corticospinal tract . Fibers innervate the limb. 80% of lateral corticospinal tract fibers.

39
Q

ventral corticospinal tract

A

remains on the same side as it descends ventral corticospinal tract.

40
Q

motor pathways are made up of

A

2 neurons, upper motor neuron and lower motor neuron

41
Q

Upper motor neuron

A

cerebral cortex to the ventral horn of the spinal cord

42
Q

injury above the level of the medulla

A

results in paralysis on the opposite side of the body

43
Q

injury below the level of decussation results in

A

paralysis on the SAME side of the body

44
Q

with injury to the upper motor neurons, the subset of inhibitory neurons

A

will be damaged and this will result in SPASTIC paralysis

45
Q

lower motor neuron

A

from ventral horn to NMJ

46
Q

Injury in lower motor neuron results in

A

flaccid paralysis

47
Q

cell bodies of parasympathetic visceral motor neurons are located in

A

intermediolateral cell columns in the grey mater of the spinal cord.

Anatomy Test II (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions