Anatomy Lab Exercise 14 Flashcards by Skylar Davidson

Q

origin

A

nonmoving attachment point

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Q

insertion

A

moving attachment point

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Q

belly

A

enlarged area of the muscle between the origin and insertion

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Q

extensors

A

muscles on the posterior surface of the arm

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Q

flexors

A

muscles on the anterior surface of the arm

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Q

adductors

A

muscles on the medial surface of the thigh

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Q

abductors

A

muscles on the lateral surface of the thigh

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Q

agonist

A

larger muscle in a group; prime mover

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Q

synergist

A

smaller muscle in a group that assists the agonist

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Q

antagonist

A

muscle opposing the movement caused by the agonist

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Q

fixators

A

muscles that stabilize the point of origin

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Q

rectus

A

muscle fibers parallel to body midline

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Q

transverse

A

muscle fibers perpendicular to body midline

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Q

oblique

A

muscle fibers diagonal to body midline

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Q

maximus

A

largest muscle in a group

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Q

medius

A

middle sized muscle in a group

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Q

minimus

A

smallest muscle in a group

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Q

magnus

A

large muscle

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Q

brevis

A

short muscle

Q

longus

A

long muscle

Q

latissimus

A

widest muscle

Q

longissimus

A

longest muscle

Q

major

A

larger muscle

Q

minor

A

smaller muscle

vastus

great

deltoid

triangular

trapezius

trapezoid

serratus

saw-toothed

rhombdoid

diamond-shaped

orbicularis

circular

piriformis

pear-shaped

platys

flat

gracilis

slender

flexor

decreases a joint angle

extensor

increases a joint angle

abductor

moves a bone away from the midline

adductor

moves a bone toward the midline

levator

raises or elevates a body part

depressor

lowers or depresses a body part

supinator

turns palm superiorly or anteriorly

pronator

turns palm inferiorly or posteriorly

tensor

makes a body part rigid

biceps

two origins

triceps

three origins

quadriceps

origins