Muscular Sys. Flashcards
Skeletal
Vol.
Cardiac
Invol.
Smooth
Invol.
Myosin
Thick filaments
Actin
Thin filaments
Ca++ / calcium (What happens when muscles release this)
When Ca++ binds to troponin it shifts tropomyosin to expose active sites which allows myosin to bind
What are sarcomeres composed of
Z-lines,
Strands of Actin (with tropomyosin and troponin)
Myosin
Myofibril
Strand of multiple sarcomeres
Muscle fiber (cell) what is it composed of
Myofibrils,
Organelles (specific SR- sarcomeres reticulum Ca++ storage)
Sarcolemma membrane
Endomysiom (covering)
Fascicle
Muscle fiber cells covered by perimysium
Muscle
Fascicles covered by epimysium …
Covered by Fascia
Fascia
Groups muscles with similar jobs together,
Helps perform specific functions, CT, attaches muscles to skin
Tendons
Endomysiom, perimysium, and epimysium
NMJ
Neuromuscular junction:
Motor neuron, synapse, synaptic cleft, Ach, synaptic bulb, motor end plate, Ach receptors, muscle fiber
DRAW OUT
Transmitter example
Ach