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Muscular System

Across
Arranged circularly to constrict body openings
When nervous stimulation is applied beyond muscles threshold level, contraction results and tensile force is generated. What state is the muscle now in?
Located on the side of the limb towards which the joint increases the joint angle
Pull a limb away from the median plane
Muscle receiving no nervous stimulus is in what state?
These muscles move cartilage or bone
These cells contain one centrally located nucleus
Boundaries where muscle cells meet to transmit nerve impulses
These cells contain up to 2 centrally located nuclei
The active contractile component
Found only in the heart, have striation, and are branched.
Attaches muscle to bone
These muscles are highly vascularized and resist fatigue
These muscles are low in myoglobin and fatigue easily
General action of muscle fibers
These muscles control activities of organs, vessels, or ducts
Down
Deltoid, bicep, and intercostal are examples of
Muscle action takes place by
Located on the side of the limb towards which the joint decreases the joint angle
These types of reactions help to generate heat in the animals body
These cells contain 2 or more nuclei that are located at the periphery of the cell
Cellular organization
Are striated, cylindrical, and are responsible for movement
Found in blood vessels, organs, and the digestive tract
Movement of a muscle that is not controlled by the animal
Covers the outside of the muscle fiber/organ
Movement of a muscle that is controlled by the animal
Pull a limb toward the median plane
These filaments are composed of actin, tropomyosin and troponin
These filaments are composed of myosin