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PHTH 511: Anatomy > Final OIIA's (Pelvic cavity, thoracic wall, etc.) > Flashcards

Final OIIA's (Pelvic cavity, thoracic wall, etc.) Flashcards

1
Q

Origin: Obturator internus

A

Anterolateral wall of true pelvis

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2
Q

Insertion: Obturator internus

A

Medial surface of greater trochantor of the femur

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3
Q

Innervation: Obturator internus

A

Nerve to obturator internus

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4
Q

Action: Obturator internus

A

-External rotation of the extended hip joint
-Abduction of flexed hip

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5
Q

Origin: Piriformis

A

Anterior surface of sacrum between anterior sacral foramina

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6
Q

Insertion: Piriformis

A

Greater trochanter of femur

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7
Q

Innervation: Piriformis

A

Branches from L5, S1, and S2

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8
Q

Action: Piriformis

A

-External rotation of extended hip joint
-Abduction of flexed hip

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9
Q

Origin: External intercostal

A

Inferior margin of rib above

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10
Q

Insertion: External intercostal

A

Superior margin of rib below

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11
Q

Innervation: External intercostal

A

Intercostal nerves

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12
Q

Action: External intercostal

A

-Most active during inspiration
-Supports intercostal space
-Moves ribs superiorly

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13
Q

Origin: Internal intercostal

A

Lateral edge of costal groove of rib above

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14
Q

Insertion: Internal intercostal

A

Superior margin of rib below

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15
Q

Innervation: Internal intercostal

A

Intercostal nerves

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16
Q

Action: Internal intercostal

A

-Most active during expiration
-Supports intercostal space
-Moves ribs inferiorly

17
Q

Origin: Innermost intercostal

A

Medial edge of costal groove of rib above

18
Q

Insertion: Innermost intercostal

A

Internal aspect of superior margin of rib below

19
Q

Innervation: Innermost intercostal

A

Intercostal nerves

20
Q

Action: Innermost intercostal

A

Acts with internal intercostal muscles

21
Q

Origin: Subcostal

A

Internal surface (near angle) of lower ribs

22
Q

Insertion: Subcostal

A

Internal surface of second or third rib below

23
Q

Innervation: Subcostal

A

Intercostal nerves

24
Q

Action: Subcostal

A

Depress ribs during forced respiration
(has a similar function to serratus posterior sup. & inf.)

25
Q

Origin: Transverse thoracis

A

Inferior margins and internal surfaces of costal cartilages of second to sixth ribs

26
Q

Insertion: Transverse thoracis

A

Inferior aspect of deep surface of body of sternum, xiphoid process, & costal cartilages

27
Q

Innervation: Transverse thoracis

A

Related intercostal nerves

28
Q

Action: Transverse thoracis

A

Depresses costal cartilages

PHTH 511: Anatomy (9 decks)

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