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Anatomy, Josh > Spinal Cord > Flashcards

Spinal Cord Flashcards

0
Q

Another name for dorsal plate?

A

Alar Plate

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1
Q

What tissue does the spinal cord develop from

A

Ectoderm (neuroectodern/neuroepithelium)

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2
Q

Another name for Ventral Plate

A

basal Plate

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3
Q

The Ventral horn controls which type of impulses?

A

Motor

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4
Q

The dorsal horn controls what type of impulses?

A

Sensory

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5
Q

Everything happening dorsally has to do with

A

afferent (effect)

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6
Q

Everything happening ventrally has to do with

A

efferent (response)

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7
Q

Where do sensory neurons arise from

A

The Neural Crest cells

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8
Q

What are the main enlargements of the spinal cord?

A

Cervical and lumbar

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9
Q

How many pairs of spinal nerves are there?

A

31 pairs

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10
Q

At 3 months old what can be said about the CNS from a development standpoint

A

Cervical and lumbar enlargements are visible. Spinal cord portions of CNS are well-distinguished from brain and brainstem regions

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11
Q

The spinal cord can be divided into four regions. What would those be?

A

Cervical, Thoracic, Lumbar, Sacral

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12
Q

what are the associated structures and functions of the Cervical Region?

A

Cervical Enlargement: Cervical Plexus and Brachial Plexus

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13
Q

What are the associated structures and functions of the Thoracic region

A

Thoracic sympathetic outflow, intercostal nerves

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14
Q

What are the associated structures and functions of the lumbar region

A

Lumbar sympathetic outflow, Lumbosacral enlargement: Lumbar plexus and Sacral Plexus.

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15
Q

What are the associated structures and functions of the sacral region?

A

Sacral parasympathetic outflow.

16
Q

Riddle me this…. What are the meningeal coverings called?

A
  1. Dura Mater
  2. Arachnoid Mater
  3. Pia Mater with the denticulate ligaments and filum terminalis
17
Q

What are the spaces in the spinal cord named?

A
  1. Subdural Space
  2. Subarachnoid Space
  3. Epidural Space
18
Q

What are the associated process of the spinal cord?

A
  1. Anterior Rootlets
  2. Posterior rootlets
  3. Spinal Nerve
19
Q

What are denticulate ligaments?

A

Lateral projections of pia mater that attach to inside of the dura mater and help anchor the spinal cord within the dural sac

20
Q

What is the filum terminalis?

A

A inferior projection of Pia Mater directly off the tip of the spinal cord into the sacral canal.

21
Q

What is a ganglion?

A

A cluster of neuron cell bodies that is outside of the CNS

22
Q

Of the spinal cord processes the spinal nerve process can be divided into 4 areas. NAME THEM!

A

Anterior ramus, Posterior ramus, Gray rami rami communicantes, White rami communicantes

23
Q

What is the Conus medularis?

A

The end of the spinal cord proper.

24
Q

What is the Cauda equina?

A

Well, it looks like a horses tail and it is the nerve rootlets that come of the end of the spinal cord.

25
Q

How many pairs of spinal nerves are their for each vertebral region?

A

Cervical 1-8, thoracic 1-12, lumbar 1-5, sacral 1-5, coccygeal 1.

26
Q

What do we have 8 cervical spinal nerves

A

we have a pair that comes out directly below the occipital bone in between the atlas and the first vertebral segment.

27
Q

Dorsal root of the spinal cord controls what…..

A

Sensory

28
Q

Ventral root of the spinal cord controls what…

A

Motor

29
Q

The ventral and dorsal ramus of the spinal nerve have both…

A

sensory and motor

30
Q

What is the term used for general somatosensory?

A

Exteroception

31
Q

What is the term used for visceral or referred sensory?

A

Interoception. example nausea

32
Q

What type of sensory to you get from the nerve endings in joints?

A

proprioception, they help your body understands where it is in space.

33
Q

What are dermatomes

A

areas of skin innervated by the sensory fibers of a single nerve root

34
Q

What is a myotome?

A

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

35
Q

What are the three main ways in which spinal nerves are distributed in the body?

A
  1. Intercostal Nerves (anterior rami)
  2. dorsal Rami (back muscles and skin)
  3. Spinal Nerve plexuses (anterior rami)

Anatomy, Josh (9 decks)

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