Muscular System

Front

What is the name of the thick myofilament found in a sarcomere?

Back

Myosin

Front

What is the name of the thin myofilaments in the muscle cell?

Back

Actin

Front

The contractile unit of a muscle is called the __________.

Back

Sarcomere

Front

Number 3 represents which of the following events: action potential reaches the axon terminal, sodium rushes into the muscle fiber, potassium leaving the muscle fiber, ACh crossing the synaptic cleft?

Back

ACh crossing the synaptic cleft

Front

Contractions are generated by: shortening of thick filaments, shortening of thin filaments, sliding of thin filaments past thick filaments, "accordian-like" folding of thick and thin filaments

Back

sliding of thin filaments past thick filaments

Front

What ion is transported across the sarcolemma in an action potential? Options: K⁺, Na⁺, Ca⁺², Cl^-

Back

Na⁺

Front

Once calcium is released, it will

Back

attach to troponin

Front

Z represents: Dendrite, Axon Terminal, Neurotransmitters, Synapse

Back

Neurotransmitters

Front

The actin is represented by the letter

Back

C

Front

Which statement best describes the location of the Perimysium? Options: It surrounds the entire muscle. It surrounds the sarcomere. It surrounds each fascicle. It surrounds the myofiber.

Back

It surrounds each fascicle.