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Flashcards in Trunk Deck (13)
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1
Q

External oblique

A

O: ribs
I: linea alba; coxa
A: compresses abdominal cavity; maintains posture

2
Q

Internal oblique

A

O: inguinal ligament; iliac crest
I: ribs and costal cartilage; coxa
A: compresses abdominal cavity; maintains posture

3
Q

Transverse abdominis

A

O: inguinal ligament; iliac crest; ribs
I: linea alba; coxa
A: compresses abdominal cavity; maintains posture

4
Q

Rectus abdominis - covered by an aponeurosis called the rectus sheath; linea alba divides left from right

A

O: coxa - symphysis pubis
I: rib cage – costal cartilage and xiphoid process
A: compresses abdominal cavity; flexes vertebral column (as in leaning forward)

5
Q

Serratus anterior

A

O: ribs
I: medial border of scapula
A: abducts and fixes scapula

6
Q

External intercostals

A

O: inferior border of a rib
I: superior border of next lower rib
A: elevate ribs when inhaling

7
Q

Internal intercostals (NOTE: your lab manual has the O and I of these muscles backwards)

A

O: superior border of a rib
I: inferior border of next higher rib
A: depress ribs when exhaling

8
Q

Diaphragm

A

O: rib cage – xiphoid process and lower ribs; vertebrae
I: central tendon
A: inhalation (contraction) and exhalation (relaxation)

9
Q

Rhomboideus major

A

O: vertebrae
I: medial border of scapula
A: fixes scapula

10
Q

Rhomboideus minor

A

O: vertebrae
I: medial border of scapula
A: fixes scapula

11
Q

Semispinalis capitis (deep to splenius capitis)

A

O: vertebrae
I: occipital bone
A: extends head

12
Q

Other structures/concepts to know

A

o Linea alba
o Rectus sheath
o Inguinal ligament

13
Q

One last structure - name origin & insertion

A

O: skull and sacrum
I: vertebrae and ribs
A: extends and rotates vertebral column