Muscular System Flashcards

A thin layer of connective tissue that surrounds each muscle fiber.

Connective tissue that surrounds groups of 10-100 individual muscle fibers separating them into bundles called fascicles.

<p>An overcoat of dense irregular connective tissue that surrounds the whole muscle.</p> Signup and view all the answers

<p>Walls of hollow organs (except heart) in the digestive system, blood vessels, and urinary system.</p> Signup and view all the answers

<p>Involuntary contraction.</p> Signup and view all the answers

<p>Producing movement, maintaining posture, stabilizing joints, and generating heat.</p> Signup and view all the answers

<p>Specialized plasma membrane of muscle cells.</p> Signup and view all the answers

<p>Stores calcium.</p> Signup and view all the answers

<p>Thick filament protein with a head and elongated tail, the heads form cross bridges with the thin filaments during muscle contraction.</p> Signup and view all the answers

<p>Thin filament protein, twisted into a double helix and appears like a double-stranded chain of pearls.</p> Signup and view all the answers

<p>Acetylcholine (ACh).</p> Signup and view all the answers

<p>Stored ATP.</p> Signup and view all the answers

<p>Cardiac</p> Signup and view all the answers

<p>Cardiac</p> Signup and view all the answers

<p>Skeletal.</p> Signup and view all the answers

<p>Cardiac.</p> Signup and view all the answers

<p>In glycosomes.</p> Signup and view all the answers

<p>Sarcoplasm.</p> Signup and view all the answers

<p>I Band.</p> Signup and view all the answers

<p>Tendon.</p> Signup and view all the answers

<p>Tropomyosin and troponin (in skeletal muscle).</p> Signup and view all the answers

<p>The center part of the sarcomere that gets smaller when a muscle contracts and appears when the muscle relaxes.</p> Signup and view all the answers

<p>Calcium.</p> Signup and view all the answers

<p>Movement of bones.</p> Signup and view all the answers

<p>Cardiac.</p> Signup and view all the answers

<p>Cardiac.</p> Signup and view all the answers

<p>Smooth.</p> Signup and view all the answers

<p>Both A and B</p> Signup and view all the answers

<p>Sarcomere.</p> Signup and view all the answers

<p>Muscle fiber.</p> Signup and view all the answers

<p>Excitability.</p> Signup and view all the answers

<p>Contractility.</p> Signup and view all the answers

<p>Extensibility.</p> Signup and view all the answers

<p>The connection of a myosin head group to an actin filament during muscle contraction.</p> Signup and view all the answers

<p>Elasticity.</p> Signup and view all the answers

<p>Z discs.</p> Signup and view all the answers

<p>myosin.</p> Signup and view all the answers

<p>A.</p> Signup and view all the answers

<p>A regulatory protein that moves tropomyosin aside &amp; exposes myosin binding sites when Ca+ is released during muscle contraction.</p> Signup and view all the answers

<p>Arrangements of myofilaments.</p> Signup and view all the answers

<p>The light and dark stripes in skeletal and cardiac muscles.</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>A long, fibrous protein that winds around the actin polymer, blocking all the myosin-binding sites.</p> Signup and view all the answers

<p>A protein that holds a reserve supply of oxygen in muscle cells.</p> Signup and view all the answers

<p>An elaborate network of membranes in skeletal muscle cells that functions in calcium storage.</p> Signup and view all the answers

<p>The cytoplasm of a striated muscle fiber.</p> Signup and view all the answers

<p>Point of contact between a motor neuron and a skeletal muscle cell.</p> Signup and view all the answers

<p>A complex carbohydrate consisting of stored glucose molecules in skeletal muscles; breaks down to release glucose when it is needed for energy.</p> Signup and view all the answers

<p>Muscle, fascicles, muscle fibers, myofibrils, sarcomere, actin &amp; myosin.</p> Signup and view all the answers

<p>A bundle of skeletal muscle cells.</p> Signup and view all the answers

<p>Less moveable of the two bones is considered to be the starting point of the muscle.</p> Signup and view all the answers

<p>The end of a muscle attached to a movable part.</p> Signup and view all the answers

<p>Broad, flat, sheet-like connective tissue that connects muscles to a bone or another muscle.</p> Signup and view all the answers

<p>Threadlike structures found in myofibrils which aid in contraction, composed of myosin (thick) and actin (thin).</p> Signup and view all the answers

<p>Supporting proteins that hold the thick filaments together in the H zone.</p> Signup and view all the answers

<p>Theory that actin filaments slide toward each other during muscle contraction, while the myosin filaments are still.</p> Signup and view all the answers

<p>Elastic protein that keeps thick and thin filaments aligned.</p> Signup and view all the answers

<p>Neurotransmitter that diffuses across a synapse and produces an impulse in the cell membrane of a muscle cell.</p> Signup and view all the answers

<p>When released from the SR, they stimulate the reaction leading to muscle contraction by attaching to regulatory proteins on actin.</p> Signup and view all the answers

<p>Electrical impulse that travels down the axon triggering the release of neurotransmitters.</p> Signup and view all the answers