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Muscles & Joints

Chapter 7

Buccinator cheek muscles-moves cheeks
Temporal Lower Jaw
Masseter Moves lower jaw upwards- used when biting and chewing
Trapezius triangular-shaped muscle that extends across the back of the shoulder, covers the back of the neck -pulls shoulder blades together
Latissimus Dorsi Lower back; extends to armpit
Pectoralis Major fan-shaped muscle that crosses the upper part of the front of the chest
Deltoid muscles covers the shoulder joint
Gluteus maximus most fleshy part of the buttock. large muscle that offers support when an individual is standing
Gluteus Medius smaller muscle located above the upper outer quadrant of the gluteus maximus muscle
Hamstring Muscles located in the posterior part of the thigh. responsible for flexing the leg on the thight
Gastrocnemius main muscle of the calf
Tibialis Anterior muscle positioned on the front of the leg
Arthralgia pain in the joints
Atrophy wasting away
Contracture abnormal bending of a joint into a fixed position; usually caused by atrophy and shortening of muscle fibers
Fascia thin sheets of fibrous connective tissue that pentrate and cover the entire muscle
Insertion point of attachment of a mucscle to a bone it moves
Involuntary Muscle act without conscious control
Origin point of attachment of a muscle to a bone that is less movable
Pelvic Gridle Weakness weakness of the muscles of the pelvic girdle. - Muscular dystrophy
Skeletal Muscles muscles that attach to the bones of the skeleton; also know as striated muscle. Voluntary
Smooth Muscle muscles found in the walls of hollow organs and tubes
Striated Muscle muscles that have a striped appearance. Skeletal and Cardiac
Torso Trunk - Midsection
Visceral Muscle Muscles of the internal organs
Voluntary Muscle muscles that operate under conscious control. Voluntary
Muscular Dystrophy group of genetically transmitted disorders characterized by progressive symmetrical wasting of skeletal muscles; no evidence of nerve involvement or degeneration of nerve tissue
Rotator Cuff Tear tear in the muscles that form a "cuff" over the upper end of the arm
Strains injury to the body of teh muscle or attachment of the tendon, resulting from overstretching, overextension, or misuse
Muscle Biopsy extraction of a specimen of muscle tissue, for the purpose of examining it under a microscope
Electromyography the process of recording the strength of the contraction of a muscle when it is stimulated by an electric current
Fibrous Joint immovable joint
Cartilaginous Joint connected by cartilage, allows limited movement
Synovial Joint lined with synovial membrane, which secretes synovial fluid. allows free movement
Created by: asmaba08