Unit 4: Notes 6 Flashcards Preview

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Flashcards in Unit 4: Notes 6 Deck (14)
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1

what are the two most important breathing muscles

intercostal muscles and diaphragm

2

what are intercostal muscles

-between ribs
-raises/lower rib Cage for breathing

3

diaphragm

changes size of the thoracic cavity to aid in inhalation/exhalation

4

what moves the shoulder girdle and stabilizes the scapula

1. Serratus anterior
2. Pectoralis minor
3. trapezius
4. rhomboid major
5. rhomboid minor

5

serratus anterior

-originates along anterior surface of ribs and insert into the scapula
-aids horizontal arm movement: punching and pushing

6

Pectoralis minor

rotates the scapula downward

7

trapezius

elevates the scapula, extends the head

8

rhomboid major

dorsal muscle inferior to rhomboid minor

9

rhomboid minor

dorsal muscle superior to rhomboid major

10

what are the muscles of the abdominal wall

1. transverse abdominus
2. rectus abdominus
3. internal oblique
4. external oblique

11

transverse abdominus

fibers run perpendicular

12

rectus abdominus

strap like muscles, fibers run parallel, a.k.a. "six pack"

13

internal oblique

external oblique

lateral wall of abdomen, runs diagonal

14

what are the muscles that move the humerus

1. Pectoralis major
2. latissimus dorsi
3. deltoid
4. Infraspinatus
5. Supraspinatus
6. Teres major
7. teres minor