Muscles - origin, insertion, action Flashcards
Sternocleidomastoid
O- sternum and clavical
I - mastoid process of the temporal bone
A - F, LF, R of head and neck
Scalene Group
O- Ribs 1 and 2
I- C2-C7
A - F, LF of the head/neck
Temporalis
O - Temporal bone
I - mandible
A - elevation of the mandible
Massester
O - zygomatic arch
I - mandible
A - elevation of the mandible
Occipitofrontalis - as a whole
O- galea aponeurosis
I - eyebrows and occipital bone
A - elevation of eyebrows
Erector Spinae group
don’tneed to know orgin and insertion
action: E, LF, R of the head/neck and trunk
Splenius group
O - C7-T6
I - Mastoid process of the temporal bone
A - E, LF, R of the head/neck
External Oblique
O - Ribs 5-12
I - linea alba and iliac crest
A - F, LF, R of the trunk
Internal Oblique
O - Iliac crest and inguinal ligament
I - Linda alba and ribs 10-12
A - F, LF, R of the trunk
Rectus abdominis
O - Public bone and pubic symphysis
I - Sternum, ribs and costal cartilage 5-7
A - F, LF of the trunk
Transverse Abdominis
O - Iliac crest, inguinal ligament, and ribs
I - linea alba
A - supports abdominal organs
Quadratus Lumborum
O - Ilium crest
I - L1-L4 and rib 12
A - LF of trunk and Elev of ilium
Psoas major
O - L1-L5
I - lesser trochanter of the femur
A - Assists in flexion of the trunk
