Muscles 2024

root for muscle

myo

root for flesh

sarc

root for above, outside

epi

root for around

peri

root for inside

endo

functional unit of a muscle

sarcomere

ion released from sarcoplasmic reticulum

calcium

connective tissue that surrounds fascicle

perimysium

connective tissue that surrounds entire muscle

epimysium

connective tissue that surrounds muscle fiber

endomysium

connects a muscle to bone

tendon

type of muscle tissue to be multinucleated and striated

skeletal

muscle tissue found in walls of hollow organs

smooth

muscle tissue found in the heart

cardiac

plasma membrane for a muscle fiber is called

sarcolemma

cytoplasm in a muscle fiber is the

sarcoplasm

myoglobin function

holds oxygen in the sarcoplasm for cellular respiration

neurotransmitter released that passes the impulse to contract from a neuron to the muscle cell

acetylcholine ACh

protein that covers the binding sites on actin

tropomyosin

protein that binds to calcium to move tropomyosin

troponin

thin filament found in a muscle

actin

thick filament found in a muscle cell

myosin

Z lines are

edges of a sarcomere

fascicles are composed of

lots of muscle fibers

skeletal muscle picture

smooth muscle picture

cardiac muscle picture