IOTA 6

Question 1

What is the middle cervical segment?

Answer 1

C7

Question 2

What is the white matter?

Answer 2

Located outside

Mylienated axons : they form a colon.

Axons travel either Rostral (^) or caudal (down)

Question 3

What are axons in the CNS called?

Answer 3

Tracts

Found in the lateral column or ventral column (anterior)

White matter

Question 4

Where is the dorsal column?

Answer 4

It’s in the dorsal segment of thE spinaL cord on the outside

Posterior

Question 5

Most of the axons in the dorsal column are?

Answer 5

Sensory

Question 6

Where is the Ventral median fissure located?

Function?

Answer 6

Anteriorly

Here the Anterior Spinal Cord Artery (ASCA) travels the entire ventral front of spinal cord

Question 7

There is no artery in the Dorsal median septum

True or false

Answer 7

True

Question 8

There are 2 Posterior spinal chord arteries

How do they differ from each other?

Answer 8

Right posterior spinal cord artery

Left posterior spinal cord artery

Arterial supply for dorsal area of spinal cord

Question 9

What is the grey matter?

Answer 9

Neurones cell bodies

Question 10

What is the Ventral horn?

Answer 10

Contains motor cell bodies

Question 11

What is the dorsal horn?

Answer 11

Contains sensory cell bodies

Question 12

What is the Intermediate zone?

Answer 12

Contains cell bodies

Question 13

Where is the lateral horn found ?

Answer 13

In thoracic to lumbar segments of spinal cord
T1-L2

Here you find preganglionic cell bodies of the sympathetic nervous system

Question 14

What do you find in the lateral horn?

Answer 14

Cell bodies of the sympathetic nervous system: preganglionic cell bodies are

Question 15

Is there any cerebrospinal fluid (CBF) in the central canal?

Answer 15

No there isn’t

Question 16

What is Spinal nerve?

Answer 16

It is mixed: sensory and motor axons travel here

Question 17

What is the ventral root?

Answer 17

It’s peripheral nervous system

Contains motor axons

Motor cells bodies from ventral anterior and ventral horns send their axons out. These axons fuse together in the VENTRAL ROOT

Question 18

What is the dorsal root?

Answer 18

Here you find the Dorsal root ganglia (DRG): group of cell bodies of the peripheral nervous system - sensory neutrons

Question 19

What are PIMS?

Answer 19

Posterior intermediate septum

From C1-T4
Seen above T4\T5

Question 20

What do efferent nerves innervate?

Answer 20

Effectors in 
Visceral organs
Cardiac muscle 
Glands
Skeletal voluntary muscles

Question 21

White matter increases?

Answer 21

As you go rostral