The Spinal Cord Flashcards

1
Q

How does the spinal cord communicate with the brain

A

Atonal tracts

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

Where does the spine leave the skull

A

From foremen magnum

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

Why is the spinal cord divided into segments

A

Attachment of dorsal and ventral roots (each made of thousands of axons)

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

What are ganglion

A

Cell bodies found outside the brain and spinal cord

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

Describe the roots of each spinal segment

A

Have 4 roots - an anterior + ventral root on both left and right side.
Each root is made of 8 Rootlets

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

What is the accessory nerve

A

Rootlets of 1st 7 spinal segments converging

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

How are paired spinal nerves formed

A

Roots of spinal cord emerging from between vertebrae

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

Where does the diameter of the spinal cord increase

A

At locations where limbs arise

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

What is expaxial tissue

A

Dorsal muscle attached to vertebrae

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

What is hypaxial tissue

A

Tissue on the ventral side of the vertebrae (includes limbs)

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

What region of the spine innervates the epaxial tissue

A

Dorsal branch

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

what region of the spine innervated hypaxial tissue

A

Ventral branches

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

How are spinal nerves named

A

Corresponding to the vertebrae
However the vertebrae grew more than the spinal cord, not consistent when it reaches thoracic vertebrae

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

When does the functional spinal cord terminate

A

L6-L7

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

What is a the conus medullaris

A

Terminal end of the spinal cord

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

What is the cauda equine

A

Bundle of elongated nerves within the lower vertebral canal

17
Q

What is the pia matter made of

A

Elastic and collagen fibres

18
Q

What are meninges

A

Layers that protect the spine
Dura Mater (outer)
Arachnoid Membrane
Pia Mater (inner)

19
Q

What is the arachnoid trabecula

A

Where spinal arteries are suspended and connected to the pia matter

20
Q

How is white matter oraganised in the spinal cord

A

Into tracts (Collins that extended the length of the cord)
Surrounds the grey matter

21
Q

How is grey matter divided in the spinal cord

A

Into dorsal, ventral, lateral horns

22
Q

Where are the sacral segments of the spine found

A

Next to the 1st Lumbar Vertebrae