Selected Skeletal Muscles Flashcards Preview

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Flashcards in Selected Skeletal Muscles Deck (52):
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B, E and area between

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epicranius

- made up of frontal and occipital bellies, plus cranial aponeurosis

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part E

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frontalis belly of epicranium

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part B

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occipitalis belly

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part A

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temporalis

- closes jaw, synergist to masseter

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part F

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orbicularis oculi

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part G

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zygomaticus major

 

raise corners of mouth up

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part C

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masseter

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sternocleidomastoid

- flexion and lateral rotation of head

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trapezius

- shrugs shoulder, hyperextends head

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erector spinae

- prime mover of back extension

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rhomboids

- note rhombus shape

- deep to trapezius

- stabilize and retract scapula

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latissimus dorsi

- prime mover of arm extension, adduction and medial shoulder rotation

14

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diaphragm

- prime mover of inspiration

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external intercostals

- synergist of diaphragm, pull ribs forward toward each other, elevating ribcage

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internal intercostals

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rectus abdominis

- flex/rotate lumbar region

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external obliques

- flexes vertebral column and abdominal wall

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internal oblique

- same action as externals, just deeper

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transversus abdominis

- compresses abdominal contents

- deepest of abdominal muscles

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deltoid

- triangular, like greek Delta

- prime mover for arm abduction

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pectoralis major

- prime mover of arm flexion, medial rotation

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serratus anterior

- "boxer's muscle" important in pushing/punching

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biceps brachii

- flexes elbow joint and supinates forearm

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brachialis

- flexes forearm

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brachioradialis

- flexes forearm

- lateral in anatomical position

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triceps brachii

- extends forearm

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gluteus medius

- abducts, medially rotates thigh

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gluteus maximus

- extends and laterally rotates thigh

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iliacus

- prime mover in thigh flexion, as when bowing

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psoas major

- flexes trunk on thigh

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pectineus

- adducts, flexes and medially rotates thigh

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adductor longus 

- adducts, flexes, medially rotates thigh

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rectus femoris

 - etends knee, flexes thigh at hip

- part of quadriceps femoris

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vastus lateralis

- lateral part of quadriceps femoris

- extends knee

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vastus medialis

- medial part of quadriceps

- extends knee

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vastus intermedius

- deep to rectus femoris, intermediate part of quadriceps

- extends knee

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tensor fasciae latae

- steadies trunk on thigh by making IT tract taut

- flexes and abducts thigh

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sartorius

- flexes, abducts and laterally rotates thigh

- flexes knee

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gracilis

- adducts thigh

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adductor magnus

- adducts and medially rotates and flexes thigh

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biceps femoris

- extends thigh and flexes knee

- part of hamstring

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semitendinosus

- medial to biceps femoris, part of hamstring

- extends thigh, flexes knee

44

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semimembranosus

- medial to semitendinosus, larger and more membranous

- extends thigh, flexes knee

- part of hamstring

45

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tibialis anterior

- prime mover of dorsiflexion, inverts foot

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gastrocnemius

- "calf" muscle

- flexes knee, plantar flexes foot

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soleus

- deep to gastrocnemius

- "soleus" = fish, because of shape

- plantar flexes foot

48

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galea aponeurotica

- aponeuroses of head

- part of epicranium between the occipitalis and frontalis bellies

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line down center of abdomen

linea alba

- "white line"

50

red lateral area

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iliotibial tract

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calcaneal tendon

- "achilles" tendon

 

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