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BIOL 203 > Muscles of Thorax & Abdomen > Flashcards

Muscles of Thorax & Abdomen Flashcards

Insertion, Origin, & Action

1
Q

pectoralis major origin

A

sternum
clavicle
costal cartilages

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2
Q

pectoralis minor origin

A

ribs 3-5

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3
Q

deltoid origin

A

clavicle

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4
Q

trapezius origin

A

superior nuchal line
C7-T12 vertebrae

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5
Q

serratus anterior origin

A

ribs 1-8

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6
Q

respiratory diapraghm origin

A

rib cage
sternum
lumbar vertebrae

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7
Q

latissimus dorsi origin

A

thoracic & lumbar vertebrae
ribs
iliac crest

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8
Q

subscapularis origin

A

scapula

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9
Q

rhomboids origin

A

C7-T5 vertebrae

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10
Q

levator scapulae origin

A

C1-C4 vertebrae

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11
Q

supraspinatus & infraspinatus origin

A

scapula

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12
Q

teres major & minor origin

A

scapula

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13
Q

external oblique origin

A

lower 8 ribs

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14
Q

internal oblique origin

A

iliac crest

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15
Q

rectus abdominis origin

A

pubis

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16
Q

transverse abdominis origin

A

last 6 ribs
iliac crest

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17
Q

Which 3 muscles insert at the linea alba?

A

external oblique
internal oblique
transverse abdominus

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18
Q

Which 3 muscles insert at the greater tubercle of the humerus?

A

supraspinatus
infraspinatus
teres minor

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19
Q

Which 5 muscles insert at the humerus (not greater tubercle)?

A

pectoralis major
deltoid
latissimus dorsi
subscapularis
teres major

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20
Q

Which muscle inserts at both the clavicle & scapula?

A

trapezius

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21
Q

Which muscle originates at C7-T5 vertebrae?

A

rhomboids

22
Q

Which muscle originates at the superior border of the rib below (goes upwards)?

A

internal intercostals

23
Q

pectoralis major insertion

A

humerus

24
Q

pectoralis minor insertion

A

scapula

25
Q

deltoid insertion

A

deltoid tuberosity of humerus

26
Q

trapezius insertion

A

scapula & clavicle

27
Q

respiratory diaphragm insertion

A

central tendon

28
Q

serratus anterior insertion

A

scapula

29
Q

latissimus dorsi insertion

A

humerus

30
Q

subscapularis insertion

A

lesser tubercle of humerus

31
Q

rhomboids insertion

A

scapula

32
Q

levator scapulae insertion

A

scapula

33
Q

supraspinatus & infraspinatus insertion

A

greater tubercle of humerus

34
Q

teres major & minor insertion

A

major - humerus
minor - greater tubercle of humerus

35
Q

The external oblique, internal oblique and transverse abdominis insert at the…

A

linea alba

36
Q

rectus abdominis insertion

A

xiphoid process & ribs

37
Q

transverse abdominis insertion

A

linea alba

38
Q

Which muscles compress the abdominal contents?

A

obliques
rectus & transverse abdominis

39
Q

Which muscles stabilize the shoulder joint?

A

subscapularis
supraspinatus & infraspinatus
teres minor

40
Q

2 muscles that abduct the arm

A

deltoid
supraspinatus

41
Q

3 muscles that adduct the arm

A

pectoralis major
latissimus dorsi
teres major

42
Q

one action that the rhomboids do

A

retract the scapula
or: stabilizes the scapula

43
Q

one action the trapezius does

A

rotates the scapula
or: elevates the scapula
or: retracts the scapula

44
Q

What actions does the deltoid do for the arm?

A

flexes, extends, abducts, medially rotates

45
Q

Which muscles can laterally rotate the arm?

A

infraspinatus
teres minor

46
Q

Which 5 muscles can medially rotate the arm?

A
  1. pectoralis major
  2. deltoid
  3. latissimus dorsi
  4. subscapularis
  5. teres major
47
Q

Which muscle can rotate the scapula?

A

trapezius

48
Q

Which muscle allows us to forcefully inhale?

A

external intercostals

49
Q

Which 2 muscles can flex the arm (move it forward)?

A

pectoralis major
deltoid

50
Q

Which 3 muscles can extend the arm (move it back)?

A

latissimus dorsi
deltoid
teres major

51
Q

Which muscle can flex the vertebral column?

A

rectus abdominus

52
Q

Which muscles can rotate the vertebral column?

A

obliques

BIOL 203 (4 decks)

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