Chapter 8 part 2 Flashcards
The fleshy portion of a muscle
Belly
Part of a muscle name referring to fibers parallel to midline
Rectus
The end of a muscle attached to the stationary bone
Origin
Part of a muscle name referring to the smallest set of muscles
Minor
A muscle that stabilizes the origin of a prime mover
Fixators
The biceps brachii and triceps brachii muscles functions as…
antagonists
Muscle that helps the prime mover function more efficiently
synergists
Part of a muscle referring to a two headed origin
biceps
Part of a muscle name referring to a muscle with a circular shape
orbicularis
Part of a muscle referring to fibers perpendicular to midline
proximal
Muscles of the back function to do what action to the head, trunk, and upper arm ?
extend
A muscle that produces and effect opposite of the prime mover
antagonist
Part of the name of a muscle referring to the largest set of muscles.
Maxius
The end of a muscle attached to the movable bone
intersection
Part of a muscle name referring to a muscle that is triangularly shaped
trapezius
Part of the muscle name referring to a three headed origin
triceps
Most movements occur due to the contraction of a____ of muscles
group
The hamstring muscles function to do what action to the lower leg?
Flex the leg and extend the thigh
Fixators ___ the origin of the prime mover so that the prime mover so that the prime mover can act more efficiently.
stabalize
“Smiling”
Zygomaticus Major
Rotates vertebral column to twist us sideways
external obliques
Flexes and rotates the head
sternocleidomostoid
Used in crossing our legs — flexers the leg at the knee joint and abducts and laterally rotates the thigh at the hip joint.
sartorius
Together with the adductor group, adducts the thigh at the hip joint.
gracilis
Closes eyelids.
Orbiculularis oculi
Extends the arm when the posterior portion contracts, abduuucts the arm when the lateral portion contracts, and flexes the arm when the anterior portion contracts
deltoid
Abducts, flexes, or extends the arm at the shoulder joint.
deltiod
muscle on the thumb side that flexes the hand
flexor carpi radialis
group that flexes the lower leg and extends the thigh
qadriceps
arm muscle that flexes arm and forearm
biceps brachii
works with the soleus to plantarflex the foot
gastrocnemius
group that extends the leg at the knee joint
quadriceps
well developed swimming muscle used to extend, adduct, or rotate the arm.
latissimus dorsi
extends the phalanges
extensor digitorium
boxers use this muscle to move the scapula laterally and forward
serratus anterior
main muscle that closes the jaw
masseter
the only quadriceps muscle that flexes the thigh and extends the leg
rectus femoris
puckers lips
orbicularis oris
posterior arm muscle that extends the arm at the shoulder
triceps brachil
wrinkles the skin of the forehead
frontalis
elevates the clavicle, depresses or elevates the scapula, or extends the head
trapezius
Flexes and abducts the thigh at the hip joint
gluteus medius
elevates and retracts the mandible
temporalis
