Lab 5 - Muscles of the Body Flashcards

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1
Q

Frontalis

A

action = raise eyebrows
fibers run up and down on forehead (frontal bone)

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2
Q

Orbicularis Oculi

A

action = close eye (blink)
around eye

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3
Q

Orbicularis Oris

A

action = purse lips
around mouth

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4
Q

Masseter

A

action = elevate mandible (close jaw)
broad band on side of jaw
-connects upper and lower jaw

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5
Q

Diaphragm

A

action = inhalation
sheet of muscle at bottom of thorax
-parachute shaped

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6
Q

Intercostal Muscles

A

action = inhalation and exhalation
between ribs

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7
Q

Rectus Abdominis

A

action = flex trunk
lateral to midline of abdomen
-“six-pack” (“abs”)

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8
Q

External Oblique

A

lateral portion of abdomen
-diagonal striations/fibers

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9
Q

Trapezius

A

action = elevate scapula (shrug shoulder)
upper-back muscle
-runs along vertebral column and inserts on scapula

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10
Q

Latissimus Dorsi

A

lower back muscle
-inserts on arm/humerous
-“swimmer’s muscle”

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11
Q

Serratus Anterior

A

“boxer’s muscle” looks like serrations points oriented anteriorly

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12
Q

Deltoid

A

action = abduct shoulder
triangular shoulder muscle

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13
Q

Pectoralis Major

A

action = adduct shoulder
chest muscle inserts on arm/humerus (“pecs”)

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14
Q

Triceps Brachii

A

action = extend elbow
posterior arm muscle (“triceps”)

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15
Q

Biceps Brachii

A

action = flex elbow
anterior arm muscle (“biceps”)

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16
Q

Gluteus Maximus

A

action = extend hip
butt/upper thigh muscle
-inserts on femur

17
Q

Hamstrings Group

A

(3 muscles)
action = flex knee
back of thigh

18
Q

Quadriceps Group

A

(4 muscles)
action = extend knee
of anterior thigh

19
Q

Gastrocnemius

A

action = plantar flex ankle
calf muscle

20
Q

Quadriceps Tendon

A

connects quadriceps to the superior edge of the patella

21
Q

Patellar Ligament

A

strong flat ligament which connects from the superior edge of the patella to tibia (shin)

22
Q

Calcaneal Tendon

A

“achilles tendon”
attach gastrocnemius and others to calcaneus