Muscle Structures

16 cards·by MaranweRigeril

What surrounds skelital muscle and all fascicles in a muscle?

Epimysium

What surrounds individual fascicles and separates muscles into compartments?

Perimysium

What surrounds individual muscle fibers?

Endomysium

What do you call the cell membrane of a muscle fiber?

Sarcolemma

What do you call the cytoplasm of a muscle fiber?

Sarcoplasm

What are the threads of proten inside sarcoplasm?

Myofibril

What are the thick protein filaments in myofibril?

Myosin

What are the thin protein filaments in myfibril?

Actin

What are the actin filaments attached to the Z band?

I Band

What is the protein actin binds to?

Z Band

What is the region where myosin and actin overlap called?

A Band

What is the unit of muscle from Z line to Z line?

Sarcomere

What is the nerve call that connects muscle fiber?

Motor Neuron

What is the connection between motor neurons and muscle fibers called?

Neuromuscular Junction

What is the chemical signal from neuron to muscle fiber called?

Neurotransmitters

What is the motor neuron and muscle fiber called?

Motor Unit