Cervical Plexus

Question 1

What are the 2 muscles that are supplied by the C1 branch of the CNXII?

Answer 1

Thyrohyoid

Geniohyoid

Question 2

What anatomical triangle is it located within?

Answer 2

Posterior triangle

Question 3

Which infrahyoid is not supplied by the ansa cervicalis?

Which infrahyoid is supplied by the inferior root of the ansacervicalis?

Answer 3

Thyrohyoid

Inferior belly of omohyoid

Question 4

Where is Erb’s point?

Answer 4

Posterior border of SCM where four sensory branches of cervical plexus emerge

Greater auricular
Transverse cervical
Lesser occipital
Supraclavicular

Surgery in the neck region