Surface Final: Muscles Flashcards
1
Q
Erector Spinae group
A
- Attaches to superior nuchal line down ribs to thoracolumbar aponeurosis
- extends neck and back together. Using one side, lateral flexion
2
Q
Splenius Capitis
A
- from mastoid process/superior nuchal line to C7-T4 spinous processes
- rotate and laterally flex head/neck to same side (one side); extend head and neck (both sides)
3
Q
Quadratus Lumborum
A
- from posterior iliac crest to last rib and transverse processes of L1-L4
- laterally flex trunk and laterally tilt hip (“hip hike”)
4
Q
Rectus abdominis
A
- from pubic crest to costal cartilage of lower ribs/xiphoid process
- trunk flexion and posterior tilt
5
Q
External oblique
A
- from 5-12 ribs to anterior part of iliac crest
- laterally flex trunk to same side, rotate to opposite side, flex trunk
6
Q
Internal oblique
A
- from lateral inguinal ligament and iliac crest to lower three ribs and abdominal aponeurosis
- laterally flex and rotate trunk to same side, and flex trunk
7
Q
Diaphragm
A
- from inner surface of lower 6 ribs, upper 2 or 3 lumbar vertebrae, and xiphoid process to central tendon
- increases volume of thoracic cavity during inhalation
8
Q
Intercostals
A
- bottom of rib above to top of rib below
- external: inhale, internal: forced exhale
9
Q
Sternocleidomastoid
A
- manubrium and clavicle to mastoid process
- cervical flexion (bilateral), lateral flexion to SAME side, and rotation to OPPOSITE (unilateral)
10
Q
Scalenes (anterior, middle, and posterior)
A
- cervical flexion and elevate ribs during breathing (bilateral), lateral flexion to SAME side, and rotation to OPPOSITE (unilateral)
- cervical transverse processes to 1st/2nd rib
11
Q
Masseter
A
- from zygomatic arch to angle and ramus of mandible
- elevate mandible at TMJ, and protract mandible
12
Q
Temporalis
A
- from temporal fossa to coronoid process of mandible
- elevate mandible at TMJ, and retract mandible
