Ansa Cervicalis

Question 1

Site

Answer 1

Nerve loop embedded in carotid sheath anterior wall

Question 2

Roots

Answer 2

1. Superior root: descendens hypoglossi
2. Inferior root: descendens cervicalis

Question 3

Superior root

Answer 3

Branch of C1 joining hypoglossal nerve descends in front of ICA and CCA to join inferior root

Question 4

Inferior root

Answer 4

Branch of C2 and C3 descends to join superior root

Question 5

Branches

Answer 5

3 infrahyoid muscles:
1. Sternohoid
2. Sternothyroid
3. Inferior belly omohyoid
4. Superior belly omohyoid
1,2, and 3 are supplied from ansa cervicalis itself while 4 is supplied by separate branch from ansa superior root