Muscles of the Head, Neck, and Abdomen Flashcards
1
Q
Epicranius
A
- From frontal to occipital bones
- Raises eyebrows
2
Q
Masseter
A
- Zygomatic to mandible
- Prime mover of jaw closure
3
Q
Temporalis
A
- Temporal bone
- Closes jaw
4
Q
Buccinator
A
- Cheeks
- Check compression
5
Q
Zygomaticus
A
- zygomatic bone
- lifts corners of the mouth
6
Q
Orbicularis Oculi
A
- Maxilla and frontal bones
- Closes the eye
7
Q
Orbicularis Oris
A
- Near the mouth
- Closes and protrudes lips
8
Q
Pterygoid Muscles
A
- Mandible
- lateral movement of mandible
9
Q
Platysma
A
- Shallow
- Upper chest to mandible
- Drawing mouth downward
10
Q
Sternocleidomastoid
A
- Sternum and clavicle
- Side to side and toward chest head movements
- Pulls sternum upward
11
Q
Digastric
A
- Jaw
- Opens mouth
12
Q
Splenius Muscles
A
- Neck and base of the skull
-Rotation and tilting of the head
13
Q
Scalenes
A
- Neck and first ribs
Flexion and rotation of the neck
14
Q
Suprahyoid
A
- Base for tongue
- Aid swallowing
- stabilize hyoid bone
15
Q
Infahyoid
A
- Base for tongue
- Aid swallowing
- Stabilize hyoid bone
16
Q
External Intercostals
A
- Between ribs
- lift the ribcage during inhalation
17
Q
Internal Intercostals
A
- Between ribs
- Drop the ribcage during exhalation
18
Q
Diaphragm
A
- Beneath the lungs
- Flattens as it contracts, increasing thoracic cavity volume
19
Q
Erector Spinae
A
- Spinal column
- Bilateral flexion extends the spine
- Unilateral flexion bends the Spine laterally
20
Q
Rectus Abdominus
A
- Abs
- Flexion b/w ribcage and pelvis (situps)
21
Q
External Obliques
A
- Flat muscle sheet on the side of the ribcage
- Rotation and lateral bending of the trunk
22
Q
Internal Obliques
A
- Flat muscle sheet below the ribcage
- Flexion, lateral flexion, and rotation of the trunk
23
Q
Transverse Abdominus
A
- Flat muscle sheet deep to internal obliques
- Maintain abdominal tension, support internal organs
24
Q
Pelvic Floor Muscles
A
- Levator ani
- Coccygeus
- Support pelvic organs
