Muscular Physiology
Muscle protein classified as thick filaments which make up part of the sarcomere.
Myosin
Which term is defined as a muscle which causes the movement of a limb?
Agonist
Located at the front of the abdomen, functions to flex and rotate the spine.
Rectus Abdominis
Front of the thigh; part of the quadriceps group. Extends the knee and flexes the hip.
Rectus Femoris
Muscles are composed of which macronutrient?
Proteins
Multi-protein complex which is the basic unit of a muscle’s cross-striated myofibril and is a major component in muscle contraction
Sarcomere
Which term is defined as the ability of an object to quickly return to the original shape and size?
Elasticity
Back of the thigh; part of the hamstring group. Flexes the knee; extends the hip.
Bicep Femoris
covering the shoulder joint from the clavicle to and scapula to the humerus, responsible for abduction of the arms, and assists in flexion and extension of the shoulder.
Deltoid
Skeletal muscles are attached to bones via which structure?
Tendons
Muscle protein, classified as a thin filament which makes up the sarcomere and has a vital role in the muscle contraction process.
Actin
Which term is defined as the ability to change or be changed according to circumstances?
Flexibilty
Lower back, extending from the thoracic and lumbar vertebrae. Adducts, extends, and medially rotates the arm.
Latissimus Dorsi
Back of the lower leg, forming part of the calf, responsible for plantar flexion and assists in knee flexion.
Gastrocnemius
List the 3 types of muscle found in the body.
Skeletal
Cardiac
Protein band which defines the boundary between one sarcomere.
Z-Disk
Which term is defined as an object's ability to stretch?
Extensibility
Largest, bulkiest skeletal muscle, responsible for extension and lateral rotation of the hip, and aids in stability.
Gluteus Maximus
Upper back and neck muscle functions to retract and rotate the scapula and elevate the shoulders.
Trapezius
Which term defines muscles which contract and aid a movement in the same direction about the axis of a joint?
Synergist
Activation of the muscle fiber by the nerve impulse causes the myosin heads to bind to actin forming actomysin crossbridges and the filaments are pulled past each other in a ratchet-like action
Sliding Filament Theory
Which term is defined as an object's ability to respond to a stimulus?
Excitability
Large upper chest muscle, responsible for adduction and medial rotation of the arms and assists in shoulder flexion.
Pectoralis Major
Located at the side of the neck running from the sternum, clavicle and mastoid process of the temporal bone. Responsible for roation and flexion of the head and neck.
Sternocleidomastoid
Muscles which serve to fix a joint in a given position during the movement of other joints.
Fixators