Brainscape's Knowledge GenomeTM

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


See full index

Anatomy > Spinal Nerves and Nerve Plexuses > Flashcards

Spinal Nerves and Nerve Plexuses Flashcards

1
Q

How many nerves are in the cervical region?

A

8

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

How many nerves are in the thoracic region?

A

12

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

How many nerves are in the lumbar region?

A

5

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

How many nerves are in the sacral region?

A

5

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

Which is smaller, the dorsal ramus or the ventral ramus?

A

dorsal

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

What does apaxial mean?

A

Innervation of back muscles with dorsal rami; they allow the spine to be erect.

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

What does hypaxial mean?

A

innervation of upper and lower limbs; they receive info from ventral rami of spinal nerve.

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

Which rami carries visceral motor components?

A

ventral

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

What kind of nerve system forms the sympathetic trunk?

A

spinal nerve ganglion

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

The sympathetic trunk is connected to spinal nerves in which regions?

A

thoracic and upper lumbar.

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

Where types of nerves are associated with the sympathetic trunk?

A

visceral motor (autonomic), sympathetic, and grey & white rami communicantes.

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

what is exteroception?

A

instant awareness of something painful happening, e.g. snakebite.

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

What is interoception?

A

visceral (e.g. nausea) or referred pain.

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

What is proprioception?

A

A sense of the surroundings/space around a body, as well as balance.

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

What is a dermatome?

A

A area of skin innverated by the sensory fibers of a single nerve root.

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

What is a myotome?

A

A group of muscles that is primarily innervated by the motor fibers of a single nerve root.

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

What are the three ways that spinal nerves are distributed in the body?

A

intercostal nerves, dorsal rami, and spinal nerve plexuses.

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

intercostal nerves always extend from whcih rami?

A

ventral rami (they are hypaxial); they can also extend from dorsal

19
Q

nerve plexuses extend from which rami?

A

ventral rami (hypaxial)

20
Q

What is the intercostalbrachial nerve?

A

Nerve found around T2; it is responsible for referred pain

21
Q

What is the subcostal nerve?

A

A pair of nerves at T12; it innervates the lateral abdominal region. The first lumbar vertebrae are below it.

22
Q

Where does the dorsal rami innervate?

A

Back of head to the butt. It also extends laterally (but not very much) along the back.

23
Q

What are the nerve plexuses?

A

A network of interweaving ANTERIOR rami of spinal nerves. They are on the right and left sides of the body.

24
Q

What vertebrae make up the cervial plexus?

A

C1 - C4

25
Q

What is the ansa cervicalis?

A

C2; LOOP of nerves that innervate neck muscles.

26
Q

What is the phrenic nerve?

A

C3; nerve that runs from the hyoid to clavicle and scapula.

27
Q

What spinal nerves innervate the diaphragm?

A

C3, C4, C5

28
Q

What vertebrae make up the brachial plexus?

A

C5 - T1

29
Q

What are the divisions of the brachial nerves (proximal to distal?)

A

roots, trunks, divisions, cords, branches

30
Q

What does the brachial plexus innervate?

A

clavicle, arm, hand

31
Q

What vertebrae make up the lumbar plexus?

A

L1 - L4

32
Q

What does the lumbar plexus innervate?

A

femur, hip, lower abdomen, leg

33
Q

What vertebrae make up the sacral plexus?

A

L5 - S4

34
Q

What adoes the sacral plexus innervate?

A

the gluteal region, shin, calf and foot.

35
Q

What are reflexes?

A

Rapid, involuntary reactions of muscles to glands to a stimulus.

36
Q

What are the three properties of reflexes?

A

stimulus, rapid response with few neurons and an identical and automatic response every time.

37
Q

What are ipsliateral reflex arcs?

A

the receptor and effector organs of the reflex are on the same side of the spinal cord. (e.g. muscles in left arm contract to pull left hand away from a hot object).

38
Q

What are contralateral reflex arcs?

A

the sensory impulses from a receptor organ cross over through the spinal cord to activate effector organs in the opposite side limb.

39
Q

What are monosynaptic reflexes?

A

reflexes that do not involve neurons. Example is tapping the patellar ligament.

40
Q

What are polysynaptic reflexes?

A

reflexes that involve interneurons and more complex pathways. There is a more prolonged delay between stimulus and response. Example is withdrawl reflexes (e.g. hot stove)

41
Q

What are stretch reflexes?

A

monosynaptic reflexes that monitor and regulate skeletal muscle length. When a stimulus results in stretching of muscle, the muscle contracts.

42
Q

What does the golgi tendon reflex do?

A

prevents skeletal muscle from tensing excessively. It signals interneurons to inhibit the actions of motor neurons. It is a mechanism to prevent excessive tension damage.

43
Q

Where are Golgi tendon organs?

A

nerve endings located within tendons near a muscle-tendon junction.

Anatomy (12 decks)

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