muscle+terms+1

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Origin: This is the muscle attachment site that is on the stationary bone during a contraction. Insertion: This is the muscle attachment site on the moving bone during a contraction. Belly: The fleshy portion between the origin and insertion: Agonist: This is the muscle that produces the desired motion. Antagonist: This is the muscle with the opposite action of the agonis and is relaxing as the agonist is contracting. Synergist: is muscle which assists the same set of joint motion as the agonists. Fixator: A muscle that acts as a stabilizer of one part of the body during movement of another. Rectus: muscle fibers running parallel to the body Transverse: muscle fibers running perpendicular to the body Oblique: muscle fibers running diagonally to the body Maximus: the largest of a group of muscles Minimus: smallest of a group of muscles Longus: the longest of a group of muscles Brevis: the shortest of a group of muscles Latissimus: Magnus: Major:Lareger group of muscles Minor: smaller group of muscles Vastus: To be extensive or vast Biceps: The large muscle in the upper arm that turns the hand to face palm up

Triceps: large muscle in the back of the arm that turns palm face down Quadriceps: 4 origins Deltoid: Triangular shape Trapezius: Trapezoid shape Serratus: Saw toothed shape Rhomboid: Diamond shape Orbicularis: muscle surrounding the eye Abductor: pulling a muscle away from the body Adductor: pulling a muscle toward the body Flexor: when contracted, a muscle that bends a joint or limb toform a 90 degree angle Extensor: a muscle that straightens a muscle or body part Levator:produces upward movement Depressor:produces downward movement Supinator:turns palm upward anteriorly Pronator:turns plam downward posteriorly =Direction of Muscle Fibers:=