Muscular System Jeopardy Structure Mic Anat Name That Muscle Disorders This and that Contraction. $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 Mr. Muscle 500 $500 $500 $500 $500 $500 Muscular System Jeopardy
An individual muscle cell
What is a myofiber?
Covering of an individual muscle cell
What is the endomysium?
A bundle of muscle fibers
What is a fascicle?
Connective tissue covering of a fascicle
What is the perimysium?
Broad sheet of connective tissue that attaches muscles to bones indirectly or to other muscles (sheet like tendon labeled on your muscles diagram)
What is an aponeurosis?
Type of muscle with striations, multiple nuclei, attached to the skeleton, and are voluntary
What is skeletal muscle?
The contractile unit of a muscle cell, or the space between 2 Z discs
What is a sarcomere?
Neurotransmmitter that initiates muscular contraction
What is acetylcholine (ACh)?
Part of the muscle cell which stores Calcium before and after contraction
What is the sarcoplasmic reticulum?
One neuron and all the muscle cells that it stimulates
What is a motor unit?
Muscle that closes, purses and protrudes the lips in a kissing action
What is the orbicularis oris?
Muscle that is the prime mover of arm abduction
What is the deltoid?
Muscle that is the prime mover of plantarflexion
What is the gastrocnemius?
Deepest muscle of the abdominal wall named for direction of fibers
What is the transversus abdominis?
A cramp of this muscle might give you a “crick” in your neck
What is the sternocleidomastoid?
Muscle paralysis condition in which the receptors of the sarcolemma are blocked from receiving the Acetylcholine released at the synaptic cleft
What is myasthenia gravis?
General term used to describe when muscle decreases in size
What is atrophy?
A spasmodic contraction associated A spasmodic contraction associated with pain (usually caused by fatigue or strain)
What is a cramp?
Tense/ spasmodic muscle; not relaxing (literally means muscle tension)
What is myotonia?
Term used to describe decreased muscle tone (not decreased muscle mass)
What is hypotonia?
Myofilaments that have “heads” and form cross bridges with actin, allowing them to join together
What are MYOSIN/ thick filaments?
Invaginations of the sarcoplasm through which nerve impulses travel to the sarcoplasmic reticulum
What are transverse tubules?
Name of the theory that explains muscle contraction and how the actin and myosin filaments stay the same length and overlap with each other
What is the Sliding Filament Theory?
Substance that exposes the myosin binding sites on actin filaments, allowing myosin and actin to attach
What is calcium?
Reason for the striations in skeletal muscle
What are myofilaments? (arrangement of thick and thin myofilaments)
The main function of muscle tissue
What is movement ? (movement produced by muscles acting with the skeletal system; muscle movement caused by muscle contraction stimulated by the nervous system)
Connective tissue structure that attaches muscle to bone
What is a tendon?
DAILY DOUBLE
Type of contraction in which muscle filaments slide past each other and the muscle contracts, causing movement
What is isotonic?
Type of contraction in which muscles do not actually shorten, they stay the same length and there is no major movement (like in holding a stretch)
What is isometric?
State of sustained partial contraction maintains this function of the muscular system
What is maintaining posture?
FINAL JEOPARDY Contraction
In a contraction, the ___ bands the ____ zones decrease in size and the ___ bands do not change in length
FINAL JEOPARDY ANSWER What is I, H and A?