anaphy lock in muscle pt 1

cardiac muscle

found in the heart, where it forms the bulk of the heart walls, it is striated, uninucleate and involuntary

endomysium

cardiac cells are cushioned by small amounts of _________ and are arranged in spiral

intercalated discs

cardiac muscle fibers are branching cells joined by special gap junctions called _________ ________

smooth muscle

no striations, involuntary, found in the hollow organs such as stomach, intestines, blood vessels.

skeletal muscle

voluntary and striated and enabling us to move

myofibrils

are the basic, rod-like contractile organelles found inside muscle cells (also called muscle fibers). They are responsible for a muscle's ability to contract and relax.

actin and myosin

are the two primary contractile proteins found in muscle cells. They are essential components of the myofibrils

Sarcomeres

can be chains of actin and myosin, chains of tiny contractile units, the structural and functional units of skeletal muscle

sarcoplasmic reticulum

is a modified version of the smooth endoplasmic reticulum found in other cells, stores calcium and releases it on demand when the muscle fiber is simulated to contract

agonist

major cause or the primary muscle responsible for the movement

antagonist

does the opposite action of the prime mover or the agonist

synergist

Muscles that assist the prime mover. They help the agonist perform the action more efficiently.

fixator

A specific type of synergist that acts to stabilize one joint