Chapter 8 Test Part II 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 attached to the smallest of a set of muscles
Minumus/minor
A muscle that stabilizes the origin of a prime mover
Fixators
The biceps brachii and triceps brachii muscles function as _______.
Antagonists
Muscle that helps the prime over function more efficiently
Synergists
Part of a muscle name referring to a two-headed origin
Biceps
Part of a muscle name referring to a muscle with a circular shape
Orbicularis
Muscles generally move the bone they lie ____ to
Proximal
In order to move a bone, a muscle must have its ____ on that bone
Insertion
Part of a muscle name referring to fibers perpendicular to midline
Transverse
Muscles of the back (posterior trunk) function to do what action to the head, trunk, and upper arm?
Extend
A muscle that produces an effect opposite of the prime mover
Antagonist
Part of a muscle name referring to the largest of a set of muscles
Maximus
The end of a muscle attached to the movable bone
Insertion
Part of a muscle name referring to a muscle with a triangular shape
Deltoid
Part of a muscle 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
Fixators _____ the origin of the prime mover so that the prime mover can act more efficiently
Stabilize
What muscle helps you smile?
Zygomaticus major
What muscle rotates the vertebral column to twist us sideways?
External oblique
What muscle flexes and rotates the head?
Sternocleidmasteroid
What muscle is used in crossing our legs– flexes the leg at the knee joint and abducts and laterally rotates the thigh at the hip point
Sartorius
What muscle together with the adductor adducts the thigh at the hip joint
Fracilis
What muscle closes the eyelid?
Orbicularis oculi
Extends the arm when the posterior portion contracts, abducts the arm when lateral portion contracts, and flexes the arm when the anterior portion contracts
Deltoid
Abducts, flexes, or extends the arm at the shoulder joint
Deltoid
Muscle on the thumb side that flexes the hand
Flexor carpi radialis
Group that flexes the lower leg and extends the thigh
Hamstrings
Arm muscle that flexes arm and forearm
Biceps brachii
Works with the soles to plantar flex the foot
Gastrocnemium
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 digitorum
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
Puckers the lips
Orbicularisoris
Posterior arm muscle that extends the arm at the shoulder
Triceps brachii
Wrinkles the skin of the forehead
Frontalis
Elevated the clavicle. Depresses or elevates the scapula, or extends the head
Trapezius
Flexes and abducts the thigh at the hip joint
Tensor facie latae
Elevates and retracts the mandible
Temporalis
