C1: Spinal cord and spinal nerves

Question 1

How many vertebrae?

Answer 1

30

Question 2

How many cervical vertebrae?

Answer 2

7

Question 3

How many thoracic vertebrae?

Answer 3

12

Question 4

How many lumbar vertebrae?

Answer 4

5

Question 5

How many sacral vertebrae?

Answer 5

5

Question 6

How many coccygeal vertebrae?

Answer 6

One

Question 7

How many spinal cord segments?

Answer 7

31

Question 8

Which vertebral route gains a segment?

Answer 8

Cervical

Question 9

Path of first spinal nerve

Answer 9

Goes out of vertebral canal

Between base of skull and above first cervical vertebra

Question 10

Spinal nerves above or below for cervical?

Answer 10

Above

Question 11

Which one is not above cervical vertebrae?

Answer 11

C8 nerve goes above T1 but below CVII - inf. to pedicle

Question 12

why is cervical part of spinal cord larger than thoracic?

Answer 12

Brachial plexus comes from cervical part

Question 13

What is cervical enlargement?

Answer 13

To fit larger/more numerous spinal nerves

Question 14

Other spinal enlargement?

Answer 14

Lumbar

Question 15

Information contained within dorsal rootlets

Answer 15

Sensory

Afferent

Question 16

Information contained within ventral rootlets

Answer 16

Motor

Efferent

Question 17

Where does spinal cord finish?

Answer 17

L1/L2

Question 18

What is the cauda equina?

Answer 18

A cluster of rootlets inf. to the spinal cord

Question 19

What is the filum terminale?

Answer 19

One fine strand of pia mater which attaches to the coccyx - remnant of spinal cord development

Question 20

What does pia mater make within the vertebrae?

Answer 20

Denticulate ligaments

Question 21

Which space does CSF travel in?

Answer 21

Subarachnoid space

Question 22

How does CSF get to SAS?

Answer 22

lateral and median apertures

Question 23

What seperates the periosteal layer from the meningeal layer at the cranial cavity?

Answer 23

Epidural, fat-filled space preventing fusion

Question 24

How would you recognise a cervical vertebrae?

Answer 24

Bifid spinous process and transverse process

Question 25

Function of denticulate ligaments

Answer 25

Stabilise spinal cord

Question 26

what must you remember to do for a spinal?

Answer 26

Pierces dura mater
Releases CSF everywhere
Effects whole spinal cord
Feet must be down or CSF goes to brain stem which will paralyse it

Question 27

What grows faster? Vertebral canal or spinal cord?

Answer 27

Vertebral canal - hence spinal cord left shorter

Question 28

Spinal cord finishes where at birth?

Answer 28

L3

Question 29

Spinal cord finishes where at adulthood?

Answer 29

L1/L2

Question 30

What has the spinal cord left after development?

Answer 30

Cauda equina - it’s rootlets
Filum terminale

Collectively called lumbar cistern

Question 31

White matter contains what?

Answer 31

Tracts i.e. axons

Myelinated so white

Question 32

Grey matter contains what?

Answer 32

Cell bodies of those axons

Question 33

Lateral grey horn comes out at which roots

Answer 33

T1-L2
S2-S4 - pelvic splanchnic

Autonomic nerves

Question 34

What type of nerve fibres do spinal nerves have?

Answer 34

Mixed - has both ventral and dorsal roots

Question 35

Dorsal column runs…

Answer 35

Ipsilaterally

Question 36

Spinothalamic tract runs…

Answer 36

Contralaterally

Question 37

Lateral Corticospinal runs…

Answer 37

Ipsilaterally

Question 38

Ventral corticospinal runs…

Answer 38

Contralaterally

Question 39

What does corticospinal tract do?

Answer 39

Voluntary movement