Chapter 10 Part 3

Question 1

What are the 4 paired muscles of the abdominal wall?

Answer 1

1. ) internal oblique
2. ) external oblique
3. ) transversus abdominis
4. ) rectus abdominis

Question 2

What are the 3 muscles of the epicranius (scalp)?

Answer 2

1. ) Frontalis Muscle
2. ) Occipitalis Muscle
3. ) Galea Aponeurotica

Question 3

How many muscles are involved in lifting the eyebrows, flaring the nostrils, opening and closing the eyes and mouth, and smiling?

What are these muscles innervated by?

What do they insert into?

Answer 3

11

Cranial Nerve VII

Usually insert into skin

Question 4

What are the 4 muscles involved in mastication?

Answer 4

1.) Temporalis

2.) Masseter

• 3.) Lateral and Medial Pterygoid*
• 4.) Buccinator*

Innervated by C.N. V (trigeminal nerve)

Question 5

What are the 3 major muscles that anchor and move the tongue?

What are they innervated by?

Answer 5

1. ) Genioglossus
2. ) Styloglossus
3. ) Hyoglossus

Innervated by C.N. XII (hypoglossal nerve)

Question 8

What is the major head flexor muscle?

Answer 8

sternocleidomastoid

Question 9

What are the 2 muscles that are synergists to head flexion?

Answer 9

suprahyoid & infrahyoid