H&N: Extra Stuff

Question 1

What are the cervical nerve roots for the cervical plexus?

Answer 1

C1-C4

Question 2

What is the ansa cervicialis?

Answer 2

Supply the infrahyoid muscles

Nerve roots: C1-C3

Action: Motor

Question 3

What does the ansa cervicalis overlie?

Answer 3

Scalene muscle

Question 4

Which nerve roots supply the phrenic nerve?

Answer 4

C3-C5

Diaphragm

Question 5

Which areas of the scalp are supplied by the cervical plexus?

Answer 5

-Posterior to superior scalp

Question 6

What relationship does the posterior border of the sternocleidomastoid have with the sensory branches of cervical plexus?

Answer 6

-Overlie the sensory branches

Question 7

What is Erb’s point?

Answer 7

• Sensory nerves enter the skin at the middle of the posterior border of the sternocleidomastoid
• Cervical plexus nerve block
• Anaesthetic is injected at this point as a regional block

Question 8

The thyroid gland is palpable. True/False

Answer 8

False. Not usually palpable unless it is enlarged (goitre)

Question 9

Which situations cause a goitre in thyroid gland?

Answer 9

Hyperthyroidism - Graves

Hypothyroidism - Hashimoto’s

Question 10

Where are the parathyroid glands and how many are there?

Answer 10

4 parathyroid glands

Lie beneath the thyroid

Control calcium levels

Question 11

Which muscle overlie the thyroid gland?

Answer 11

-Infrahyoid muscles

Strap like muscles