Muscles

1. number 1

(a)  

Answer explanation

• Close eye

  • blinking/squinting; pulls eyebrows inferiorly

number 12

(a)  

Answer explanation

Primary action: Closes mouth

number 13

(a)  

Answer explanation

• Primary action- raises lateral corners of mouth (smiling muscle)

number 14

(a)  

Answer explanation

• Primary action-  prime mover of jaw closure

number 2

(a)  

Answer explanation

• Primary action-  flexes & laterally rotates the head

number 15

(a)  

Answer explanation

Primary action-  tenses skin of neck

number 4

(a)  

Answer explanation

• Primary action- Adducts & medially rotates arm 

number 16

(a)  

Answer explanation

• Primary action- rotates scapula so its inferior angle moves laterally & upward

number 9

(a)  

Answer explanation

• Primary action-  stabilizes, elevates, retracts and rotates scapula 

number 7

(a)  

Answer explanation

• Primary action- prime mover of arm extension; powerful arm adductor; medially rotates arm. Arm extension at shoulder