Selected Skeletal Muscles Flashcards

1
Q
A
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2
Q

B, E and area between

A

epicranius

  • made up of frontal and occipital bellies, plus cranial aponeurosis
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3
Q

part E

A

frontalis belly of epicranium

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4
Q

part B

A

occipitalis belly

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5
Q

part A

A

temporalis

  • closes jaw, synergist to masseter
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6
Q

part F

A

orbicularis oculi

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7
Q

part G

A

zygomaticus major

raise corners of mouth up

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8
Q

part C

A

masseter

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9
Q
A

sternocleidomastoid

  • flexion and lateral rotation of head
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10
Q
A

trapezius

  • shrugs shoulder, hyperextends head
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11
Q
A

erector spinae

  • prime mover of back extension
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12
Q
A

rhomboids

  • note rhombus shape
  • deep to trapezius
  • stabilize and retract scapula
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13
Q
A

latissimus dorsi

  • prime mover of arm extension, adduction and medial shoulder rotation
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14
Q
A

diaphragm

  • prime mover of inspiration
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15
Q
A

external intercostals

  • synergist of diaphragm, pull ribs forward toward each other, elevating ribcage
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16
Q
A

internal intercostals

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17
Q
A

rectus abdominis

  • flex/rotate lumbar region
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18
Q
A

external obliques

  • flexes vertebral column and abdominal wall
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19
Q
A

internal oblique

  • same action as externals, just deeper
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20
Q
A

transversus abdominis

  • compresses abdominal contents
  • deepest of abdominal muscles
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21
Q
A

deltoid

  • triangular, like greek Delta
  • prime mover for arm abduction
22
Q
A

pectoralis major

  • prime mover of arm flexion, medial rotation
23
Q
A

serratus anterior

  • “boxer’s muscle” important in pushing/punching
24
Q
A

biceps brachii

  • flexes elbow joint and supinates forearm
25
Q
A

brachialis

  • flexes forearm
26
Q
A

brachioradialis

  • flexes forearm
  • lateral in anatomical position
27
Q
A

triceps brachii

  • extends forearm
28
Q
A

gluteus medius

  • abducts, medially rotates thigh
29
Q
A

gluteus maximus

  • extends and laterally rotates thigh
30
Q
A

iliacus

  • prime mover in thigh flexion, as when bowing
31
Q
A

psoas major

  • flexes trunk on thigh
32
Q
A

pectineus

  • adducts, flexes and medially rotates thigh
33
Q
A

adductor longus

  • adducts, flexes, medially rotates thigh
34
Q
A

rectus femoris

  • etends knee, flexes thigh at hip
  • part of quadriceps femoris
35
Q
A

vastus lateralis

  • lateral part of quadriceps femoris
  • extends knee
36
Q
A

vastus medialis

  • medial part of quadriceps
  • extends knee
37
Q
A

vastus intermedius

  • deep to rectus femoris, intermediate part of quadriceps
  • extends knee
38
Q
A

tensor fasciae latae

  • steadies trunk on thigh by making IT tract taut
  • flexes and abducts thigh
39
Q
A

sartorius

  • flexes, abducts and laterally rotates thigh
  • flexes knee
40
Q
A

gracilis

  • adducts thigh
41
Q
A

adductor magnus

  • adducts and medially rotates and flexes thigh
42
Q
A

biceps femoris

  • extends thigh and flexes knee
  • part of hamstring
43
Q
A

semitendinosus

  • medial to biceps femoris, part of hamstring
  • extends thigh, flexes knee
44
Q
A

semimembranosus

  • medial to semitendinosus, larger and more membranous
  • extends thigh, flexes knee
  • part of hamstring
45
Q
A

tibialis anterior

  • prime mover of dorsiflexion, inverts foot
46
Q
A

gastrocnemius

  • “calf” muscle
  • flexes knee, plantar flexes foot
47
Q
A

soleus

  • deep to gastrocnemius
  • “soleus” = fish, because of shape
  • plantar flexes foot
48
Q
A

galea aponeurotica

  • aponeuroses of head
  • part of epicranium between the occipitalis and frontalis bellies
49
Q

line down center of abdomen

A

linea alba

  • “white line”
50
Q

red lateral area

A

iliotibial tract

51
Q
A

calcaneal tendon

  • “achilles” tendon
52
Q
A