OIAs of the TORSO Flashcards

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1
Q

Sternocleidomastoid

A

ORIGIN : 2 heads; manubrium of sternum and clavicle
INSERTION : mastoid process of temporal bone
ACTION : flexes and rotates cervical vertebral column

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2
Q

Iliocostalis group

A

ACTION : extends and laterally flexes vertebral column, head, and neck

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3
Q

Longissimus group

A

ACTION : extends and laterally flexes vertebral column, head and neck

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4
Q

Spinalis group

A

ACTION : extends and laterally flexes vertebral column, head, and neck

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5
Q

Intertransversarii

A

ORIGIN : transverse process of vertebrae
INSERTION : transverse process of vertebra above
ACTION : laterally flexes vertebral column

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6
Q

Interspinales

A

ORIGIN : spinous process of vertebra
INSERTION : spinous process of vertebra above
ACTION : extends vertebral column

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7
Q

Rectus abdominis

A

ORIGIN : pubic crest
INSERTION : xiphoid process and costal cartilage of ribs 5-7
ACTION : compress abdominopelvic cavity and flexes vertebral column

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8
Q

External oblique

A

ORIGIN : lower 8 ribs
INSERTION : linea alba and anterior iliac crest
ACTION : compress abdominopelvic cavity, flexes and rotates vertebral column

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9
Q

Internal oblique

A

ORIGIN : inguinal ligament, iliac crest, and lumbodorsal fascia
INSERTION : linea alba, pubic crest, and lower ribs
ACTION: compresses abdominopelvic cavity, flexes and rotates vertebral column

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10
Q

External intercostals

A

ORIGIN : inferior border of each ribs
INSERTION : superior border of rib below
ACTION : elevates ribs

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11
Q

Transverse abdominis

A

ORIGIN : thoracolumbar facia, iliac crest, and cartilage or lower ribs
INSERTION : linea alba and pubic crest
ACTION : compress abdominopelvic cavity

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12
Q

Internal intercostals

A

ORIGIN : superior border of each ribs
INSERTION : inferior border of rib above
ACTION : depresses ribs

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13
Q

Diaphragm

A

ACTION : elevates lower ribs, expands thoracic cavity for breathing

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