• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/24

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

24 Cards in this Set

  • Front
  • Back
Endomysium
The delicate connective tissue sheath that encloses each muscle fiber.
Perimysium
A coarser fibrous membrane that wraps several sheathed fibers
Fascicle
A bundle of fibers
Epimysium
A tougher overcoat of connective tissue that binds many fascicles together
Sarcolemma
The plasma membrane in muscle cells
Sarcomeres
Chains of tiny contractile units which are aligned end to end along the length of myofibrils
Thick filaments
also called myosin filaments - they are made mostly of bundled molecules of the protein myosin but also contain ATPase enzymes which split ATP to generate the power for muscle contraction.
Thin filaments
Composed of the contractile protein actin plus some regulatory proteins that play a role in allowing or preventing myosin head binding to actin
Sarcoplasmic Reticulum
a muscle fiber organelle - it is a specialized smooth endoplasmic reticulum
Motor Unit
One neuron and all of the skeletal muscle cells it stimulates.
Neuromuscular Junction
the region where a motor neuron comes into close contact with a skeletal muscle cell.
Synaptic Cleft
the gap between the nerve endings and the muscle cells membranes.
Acetylcholine
the specific neurotransmitter that stimulates skeletal muscle cells.
Creatine Phosphate
a unique high energy molecule found in muscle cells but not other cell types
Muscle Fatigue
a condition in which a muscle loses its ability to contract as a result of overactivity. It is usually a period after stimulation
Isotonic Contractions
muscle contraction without appreciable change in the force of contraction;
Isometric Contractions
muscle contraction without appreciable shortening or change in distance between its origin and insertion.
Muscle Tone
unconscious low level contraction of your muscles while they are at rest
Origin
attachments of a muscle that remains relatively fixed during muscular contraction
Insertion
the site of attachment, as of a muscle to the bone that it moves
Prime Mover
a muscle that acts directly to produce a desired movement amid other muscles acting simultaneously to produce the same movement indirectly.
Antagonists
one that counteracts the action of another muscle
Synergists
a muscle or agent which acts with another.
Fixators
device that provides rigid immobilization of a fractured bone by means of rods attached to pins that are placed in or through the bone.