THRC.2

Question 1

Medulla spinalis is latin for…

Answer 1

Spinal cord

Question 2

At which locations does the spinal cord become thicker?

Answer 2

Where nerves arise supplying the:

• Forelimb
• Hindlimb

Question 3

Enlargement of the spinal cord where arising nerves support the forelimb

Answer 3

Intumescentia cervicalis

• Enlargement of the spinal cord where arising nerves support the forelimb

Question 4

Answer 4

Intumescentia lumbalis

• Enlargement of the spinal cord where arising nerves support the hindlimb

Question 5

Answer 5

Conus medullaris

• Cone-shaped ending of the spinal cord

Question 6

Answer 6

Dorsal median groove

Question 7

Answer 7

Dorsal intermediate groove

Question 8

Answer 8

Dorsal lateral groove

Question 9

Answer 9

Dorsal median septum

Question 10

Answer 10

Dorsal horn

Question 11

Answer 11

Proper nucleus of the dorsal horn

Question 12

Answer 12

Ventral horn

Question 13

Answer 13

Dorsal root

Question 14

Answer 14

Spongious zone

Question 15

Answer 15

Gelatinous zone

Question 16

Answer 16

Thoracic nucleus

Question 17

Answer 17

Central canal

Question 18

Answer 18

White matter

Question 19

Answer 19

Grey matter

Question 20

Answer 20

Motor nucleus

Question 21

Answer 21

Ventral root

Question 22

Answer 22

Ventral median fissure

Question 23

Dorsal and ventral roots join to form…

Answer 23

Spinal nerves

Question 24

Spinal ganglia are located…

Answer 24

Inside the dorsal root

Question 25

Spinal ganglia contain...

Answer 25

Sensory neurones *Except for* *the first spinal nerve*

Question 26

Cauda equina

Answer 26

* Sacral + caudal spinal roots * Pass beyond conus medullaris * Exit through their intervertebral foramen

Question 27

Answer 27

Conus medullaris

Question 28

Answer 28

Cauda equina

Question 29

Blood supply of the spinal cord

Answer 29

_Segmental arteries_ from: * Vertebral artery (C-spine) * Cervical arteries * Dorsal intercostal arteries * Lumbar arteries

Question 30

Where do segmental arteries enter the vertebral channel?

Answer 30

Intervertebral foramen * Then divide into dorsal and ventral branches * Forming a plexus

Question 31

Give the arteries of the spinal cord

Answer 31

* Ventral spinal artery * 2 x dorsal spinal arteries

Question 32

Where does the venous plexus drain?

Answer 32

* Vertebral vein * Cranial vena cava * Azygous vein

Question 33

Answer 33

Dorsal root

Question 34

Answer 34

Spinal ganglion

Question 35

Answer 35

Motor nucleus

Question 36

Answer 36

Dendritic axon

Question 37

Answer 37

Motor fibre