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Human Anatomy > Exercise 19: The Spinal Cord and Spinal Nerves > Flashcards

Exercise 19: The Spinal Cord and Spinal Nerves Flashcards

1
Q

What is the anatomical term for: most superior boundary of the spinal cord

A

Foramen magnum

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2
Q

What is the anatomical term for: meningeal extension beyond the spinal cord terminus

A

Filum terminale

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3
Q

What is the anatomical term for: spinal cord terminus

A

Conus medullaris

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4
Q

What is the anatomical term for: collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord

A

Cauda equina

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5
Q

The proper answer to the description relating to the spinal cord anatomy for: primary neuron type found in dorsal horn is?

A

Sensory, interneuron

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6
Q

The proper answer to the description relating to the spinal cord anatomy for: primary neuron type found in ventral horn is?

A

Motor

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7
Q

The proper answer to the description relating to the spinal cord anatomy for: neuron type in dorsal root ganglion is?

A

Sensory

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8
Q

The proper answer to the description relating to the spinal cord anatomy for: fiber type in ventral root is?

A

Motor

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9
Q

The proper answer to the description relating to the spinal cord anatomy for: fiber type in dorsal root is?

A

Sensory

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10
Q

The proper answer to the description relating to the spinal cord anatomy for: fiber type in spinal nerve is?

A

Sensory, motor

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11
Q

Where in the vertebral column is a lumbar puncture generally done? Why is it the site of choice?

A

Below L3; meninges extend beyond spinal cord and are filled with CSF, so the spinal cord isn’t damaged

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12
Q

The spinal cord is enlarged in two regions, the _____ and the _____ regions. What is the significance of these enlargements?

A

Cervical; lumbar; the nerves serving the upper and lower limbs arise here

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13
Q

How does the position of the grey and white matter differ in the spinal cord and the cerebral hemispheres?

A

Spinal cord: outer layer = white, inner layer = gray; cerebrum: outer layer = gray, inner layer = white

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14
Q

Describe the function of the denticulate ligaments.

A

Anatomical properties , functional and clinical significance; stabilize the spinal cord within the vertebral canal

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15
Q

Explain why spinal nerves are mixed nerves.

A

Because their posterior roots contain sensory axons and their anterior roots contain motor axons

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16
Q

Compare and contrast the meninges of the spinal cord and the brain.

A

Both: connective tissue that covers/ protects; brain: dura mater = 2 layers, tightly adhered; spinal cord: 1 layer, epidural space

17
Q

How can you distinguish the dorsal from the ventral horns?

A

Ventral horns are wider than dorsal horns and dorsal horns are closer to outer edges of spinal cord

18
Q

In the human, there are 31 pairs of spinal nerves, named according to the region of the vertebral column from which they issue. How much is the cervical nerves numbered?

19
Q

In the human, there are 31 pairs of spinal nerves, named according to the region of the vertebral column from which they issue. How much is the lumbar nerves numbered?

20
Q

In the human, there are 31 pairs of spinal nerves, named according to the region of the vertebral column from which they issue. How much is the sacral nerves numbered?

21
Q

In the human, there are 31 pairs of spinal nerves, named according to the region of the vertebral column from which they issue. How much is the thoracic nerves numbered?

22
Q

The ventral rami of spinal nerves C1 through T1 and T12 through S4 take part in forming _____, which serve the _____, _____ _____ of the body. The ventral rami of T2 through T12 run between the ribs to serve the _____ _____. The dorsal rami of the spinal nerves serve _____ _____.

A

Plexuses; limbs, anterior truck; intercostal muscles; posterior trunk

23
Q

What would happen to the dorsal root of the spinal nerve if it was damaged or transected?

A

Loss of sensory function

24
Q

What would happen to the ventral root of the spinal nerve if it was damaged or transected?

A

Loss of motor function

25
Q

What would happen to the ventral rams of the spinal nerve if it was damaged or transected?

A

Loss of both motor and sensory function

26
Q

Define nerve plexus.

A

Complex network of nerves

27
Q

What is the major nerve of the biceps brachii?

A

Lateral cutaneous

28
Q

What is the major nerve of the diaphragm?

29
Q

What is the major nerve of the posterior thigh?

30
Q

What is the major nerve of the fibulas muscles?

31
Q

What is the major nerve of the flexor carpi radialis?

32
Q

What is the major nerve of the deltoid?

33
Q

What is the major nerve of the gracilis?

34
Q

What is the major nerve of the anterior thigh?

35
Q

What is the major nerve of the muscles of the perineum?

Human Anatomy (37 decks)

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