Head, Neck and Trunk

Question 1

What does the axial skeleton consist of?

Answer 1

Skull
Vertebral column
Ribcage
Sternum

Question 2

What is the function of the axial skeleton?

Answer 2

• Supports weight of human body above pelvis & maintains posture
• Enables movement with its joints & muscles
• Protects spinal cord enclosed within spinal canal formed by vertebral foramina

Question 3

How many cervical vertebrae are there?

Answer 3

7

Question 4

How many pairs of cervical nerves are there?

Answer 4

8 pairs

Question 5

How many thoracic vertebrae are there?

Answer 5

12

Question 6

How many lumbar vertebrae are there?

Answer 6

5

Question 7

How many cranial bones are there?

Answer 7

8 cranial bones

Question 8

How many facial bones are there?

Answer 8

14 facial bones

Question 9

How many ribs are there?

Answer 9

12

Question 10

What is C1 and C2 called?

Answer 10

C1 = atlas
C2 = axis

Question 11

How do the cervical nerves emerge?

Answer 11

C1 - C7 = Emerge above corresponding cervical vertebrae

Cervical nerve 8 emerges below C7 vertebrae

Question 12

How do the thoracic and lumbar nerves emerge?

Answer 12

Below the corresponding vertebrae

Question 13

When does the cauda equina start?

Answer 13

Around L1-L2

Question 14

What does C6 correspond with?

Answer 14

End of larynx & pharynx
Trachea & oesophagus begin

Question 15

What does T4 correspond with?

Answer 15

Superior mediastinum/Inferior mediastinum

Question 16

What does L1/L2 correspond with?

Answer 16

End of spinal cord

Question 17

What does S3 correspond with?

Answer 17

Level of pelvic diaphragm

Question 18

Where is the cauda equina located?

Answer 18

In the subarachnoid space
Starting from L1/L2

Question 19

What is the dorsal sacral foramina for?

Answer 19

To allow the dorsal rami of sacral spinal nerves to pass through