A skeletal muscle cell.
Small bundle of muscle fibers.
Fibrous connective tissue that connects muscles to bones.
Layer of connective tissue that closely surrounds a skeletal muscle.
extends inward from the epimysium and separates muscle tissue into fascicles.
Layer of connective tissue with in a fascicle that surrounds muscle fibers.
Membrane of a muscle cell.
Cytoplasm of a muscle cell that contains many oval nuclei and mitochondria.
Stores and pumps calcium during muscle stimulation.
Basic unit of a muscle cell. From Z-line to Z-line.
area where a nerve cell stimulates a muscle cell
Neurons that stimulate structures in our body.
One set of muscle cells stimulated by a single neuron.
Space between synaptic bulb and muscle.
Chemical messengers released from neurons.
area of a muscle cell where receptors are found.
Muscle that provide a particular body movement.
Muscle that provides opposite movement of a prime mover
Muscle that assists a prime mover.
End of a muscle that attaches to a relatively immovable part.
End of a muscle that attaches to a movable part. Always moves toward the origin.
Fast twitch fibers
Burn ATP faster to provide fast movements. They use less oxygen and are pale in color.
Slow twitch fibers
Burn ATP slower and allow posture muscles to have stamina. They are red in color because they use more oxygen.
Protein in muscles that give them their red color. They allow muscles to store oxygen.
Minimum amount of neurotransmitter needed to cause a muscle contraction.
all or none principle
Cells either contract or they don't because a cell cant partially contract.
long sustained contraction.
isometric muscle contraction
muscle contraction where the length of the muscle remains the same. ( never produces movement)
isotonic muscle contraction
muscle contraction where the muscle tone doesn't change. (always produces movement)
Muscles produce less force when continuously used.
indicates damage or potential for damage.
Proteins are broken down when muscles aren't used, muscle gets smaller
Proteins are made when muscles are used, muscle gets bigger.
Contraction of Skeletal muscle cells after death.