Anterior Muscles of the Neck

Question 1

Sternocleidomastoid

Answer 1

1. Clavicular Head

2. Sternal Head

Question 2

Origin of Clavicular Head

Answer 2

Attaches to STERNAL END of CLAVICLE

Question 3

Origin of Sternal Head

Answer 3

Attaches to MANUBRIUM

Question 4

Insertion of Sternocleidomastoid

Answer 4

1. MASTOID region of SKULL

2. LATERAL portion of SUPERIOR NUCHAL LINE

Question 5

Action of Sternocleidomastoid

Answer 5

1. TOGETHER: FLEX the NECK
2. ALONE:

one side BENDS neck towards SHOULDER

and Turns FACE to OPPOSITE SIDE

Question 6

Innervation of Sternocleidomastoid

Answer 6

1. ACCESSORY (N XI)

2. CERVICAL SPINAL PLEXUS (C2-C3) of CERVICAL PLEXUS