Skeletal Muscle Parts
The smallest unit of contraction for a muscle.
What is a sarcomere?
The names of the thick and thin filaments in a sarcomere, respectively.
The type of muscle responsible for voluntary movement.
What is skeletal muscle?
The fibrous connective tissue which connects muscle to bone.
What is a tendon?
Literally "muscle fiber"
What is myofibril?
What is a fascicle?
The name of the theory which explains muscle contraction.
The type of muscle responsible for pumping blood around the body.
What is cardiac muscle?
The energy molecule which attaches to the myosin head to release it from the actin molecule.
What is ATP?
Literally "structure inside muscle"
What is endomysium?
The covering around the entire muscle.
What is the epimysium?
When a myosin head attaches to an actin filament.
What is a crossbridge?
What is a smooth muscle cell?
The neurotransmitter released from a synapse in order to begin a muscle contraction.
What is acetylcholine?
Literally "agent sent across nerve"
What is neurotransmitter?
The covering around a fascicle.
What is the perimysium?
The movement that occurs after the crossbridge is formed and ADP and P are released from the myosin head.
What is a powerstroke?
The only muscle tissue type that is branched.
What is cardiac muscle?
The ion which bonds to a protein on the actin, enabling the myosin head to bind.
What is Ca2+?
Literally "characterized by many nuggets"
What is multinucleated?
The organelle in the muscle cell membrane that supplies calcium to the muscle.
What is the sarcoplasmic reticulum?
The distance between these two lines is what decreases during a contraction.
What are the Z lines?
These are responsible for the striations of cardiac and skeletal muscle.
What are sarcomeres?
The protein wrapped around actin molecules, blocking the binding site.
What is troponin?
Literally "structure of netting relating to the molded flesh"