Axial Musculature Flashcards Preview

MUSCLES OIA > Axial Musculature > Flashcards

Flashcards in Axial Musculature Deck (23)
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1

Epicranius

O: Occipital and Temporal Bones
I: Skin of Eyebrows
A: Raises eyebrows, wrinkles forehead

2

Orbicularis oculi

O: Frontal/Maxillary bone
I: Eyelid tissue
A: Closes eye

3

Zygomaticus

O: Zygomatic bone
I: Angle of Mouth
A: Raises corner of mouth (smiling)

4

Depressor anguli oris

O: Body of mandible
I: Angle of mouth
A: Pulls mouth corners down (frowning)

5

Orbicularis oris

O: Skin/muscle around mouth
I: Skin/muscles at angles of mouth
A: closes lips (Kissing, whistling)

6

Buccinator

O: maxilla/mandible in molar region
I: Orbicularis oris
A: Compresses cheeks (fish lips!)

7

Platysma

O: fascia of chest
I: angle of mouth
A: tenses skin of neck

8

Masseter

O: zygomatic arch
I: angle of mandible
A: elevates mandible

9

Temporalis

O: temporal bone
I: coronoid process of mandible
A: elevates mandible

10

Sternocleidomastoid

O: medial portion of clavicle
I: mastoid process
A: flexes/laterally rotates head

11

Splenius

O: spinous process of c7-t6
I: mastoid process
A: extends/laterally rotates head

12

Digastric (anterior and posterior bellies)

O: mastoid process
I: hyoid bone
A: elevates hyoid bone

13

Mylohyoid

O: medial surface of mandible
I: hyoid bone
A: elevates hyoid bone

14

Sternohyoid

O: manubrium of sternum
I: lower margin of hyoid bone
A: depresses hyoid bone

15

Omohyoid

O: superior surface of scapula
I: lower margin of hyoid bone
A: depresses/retracts hyoid bone

16

Erector spinae

O: illium (os coxa)
I: cervical and thoracic vertebrae
A: extends vertebral column

17

External intercostals

O: inferior border of rib above
I: superior border of rib below
A: elevates rib cage

18

Internal intercostals

O: superior border of rib below
I: inferior border of rib above
A: depresses rib cage

19

Diaphragm

O: lumbar vertebrae
I: central tendon of diaphragm
A: expands thoracic cavity

20

Rectus abdominus

O: pubic crest of os coxa
I: xiphoid process of sternum
A: flexes/rotates lumbar region of vertebral column

21

External oblique

O: outer surface of ribs 4-12
I: linea alba
A: compresses abdominal wall

22

Internal oblique

O: iliac crest of os coxa
I: linea alba
A: compresses abdominal wall

23

Transversus abdominis

O: iliac crest of os coxa
I: linea alba
A: compresses abdominal contents