Lab 8: msucles of the head, nech, and trunk

1

temporalis

2

orbicularis oculi

3

frontalis

4

orbicularis oris

1

zygomaticus minor

2

zygomatiscus major

3

buccinator

4

risorius

5

depressor anguli oris

6

levator labii superioris

7

depressor labii inferioris

8

mentalis

1

occipitalis

2

epicranius: frontal belly (frontalis)

3

epicranius: occipital belly (occipitalis)

1

sternocleidomastoid

O: manubrium/clavicle

I: mastoid process of temporal bone

Bilateral action: cervical flexion

Unilateral action: cervical lateral flexion/rotation

1

trapezius

1

diaphragm

2

R lung

3

heart

4

L lung

1

external intercostals

fibers run down and towards the anterior midline

2

internal intercostals

fibers run up and towards the anterior midline

1

external intercostals

2

internal intercostals

1

interal intercostals

2

diaphragm (vertical fibers)

1

rectus sheath

2

transverse abdominus

3

internal obliques

4

external obliques

5

linea alba

6

external obliques

7

rectus abdominus

8

tendinous inscriptions

1

external obliques

2

rectus abdominis
O: pubic crest/symphysis

I: xiphoid process/costal cartilages

A: trunk flexion

1

tendinous inscriptions

2

linea alba

1

external obliques

2

internal obliques

3

transverse abdominis