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Ch. 5 - Muscular System

Name: _____________________
Date: ______________________
Period: ______
Horizontales
Thick muscle microfilament; has a ropelike tail and multiple globular cross bridges
Property of muscle where it shortens in response to correct stimulus
Movable muscle attachment site, typically farther away from the center of the body
Striated muscle tissue showing branched fibers and intercalated disks; found in the heart
A graphic illustration of muscle activity
Muscle fiber arrangement where short fibers attach obliquely to a central tendon on one side of the tendon
Scientist who proposed the sliding filament theory of muscle contraction in 1954
Another name for the spindle receptors that are embedded in muscles found in the reflex arc between two opposing muscles
Descriptive term for the binding of the myosin cross bridges; several cross bridges bond, then alternate with resting cross bridges
Oxygen binding protein found along with glycogen in skeletal muscle fibers
Term for a broad, flat indirect muscle attachment
The motor unit is the --?-- unit of this system
Type of muscle contraction where muscle tension develops but the muscle does not shorten because the load is too great
Smooth muscle fibers demonstrate --?--, unlike the other two types; they can divide and increase in number during pregnancy
Period between muscle action potential generation and the beginning of the contraction
Meaning for the "T" in T-tubule found int he muscle cell membrane:
Verticales
Muscles, like the biceps and triceps brachii, illustrate an --?-- pair; when one muscle contracts, the opposing muscle is relaxed
The functional unit of muscle; smallest contractile unit which lies end-to-end the length of a myofibril
Muscle fiber arrangement where the muscle has a broad origin and its fascicles narrow toward a single tendon; triagular in shape
Skeletal muscle neurotransmitter
Element, stored in the sarcoplasmic reticulum, that is released just prior to muscle contraction and attaches to troponin
Type of muscle contraction where the muscle shortens as muscle tension exceeds the load of the object
Meaning for the "T" in T-tubule found in the muscle cell membrane
Most armadillos seen on Texas highways show muscles in a characteristic locked position, called --?-- mortis
Collagenic sheath that gathers bundles of muscles cells into fascicles
Property of muscle where it is able to regain its original shape and size after being stretched
The degenerative disease of the nerves affecting muscles is called Lou Gehrig's disease or --?-- lateral sclerosis
A muscle undergoing successive stimulation will show a slightly stronger contraction with each successive stimuls, illustrating treppe or the --?-- effect
Skeletal muscles are the only --?-- muscles; they are under conscious control
Reduced capacity of a muscle or inability to contract, esp. following overuse