BIO 152 E3 EER

Front

What is the correct order of events in action potentials?

Back

Depolarization, repolarization, hyperpolarization

Front

What is smooth muscle?

Back

Smooth muscle is a type of non-striated muscle found in internal organs and blood vessels, typically wrapped around internal tubes.

Front

What is true regarding smooth muscle?

Back

More than one of the options is correct; it is typically found wrapped around internal tubes and in blood vessels.

Front

What is false regarding skeletal muscle?

Back

Fibers have a single nucleus (this is false; skeletal muscle fibers are multinucleated).

Front

What happens when threshold is reached in a neuron?

Back

An action potential occurs.

Front

What is the smallest unit of contraction in muscle?

Back

Sarcomeres are the smallest unit of contraction in muscle.

Front

What is depolarization in the context of action potentials?

Back

Depolarization is the process where the membrane potential becomes less negative, leading to the initiation of an action potential.

Front

What is repolarization in action potentials?

Back

Repolarization is the process of restoring the membrane potential to a more negative value after depolarization.

Front

What is hyperpolarization?

Back

Hyperpolarization is when the membrane potential becomes more negative than the resting potential.

Front

What are myofibrils?

Back

Myofibrils are long, thread-like structures found in muscle fibers, composed of sarcomeres.