Which of the Following Is/are TRUE About Smooth Muscle

question 23

Multiple Choice

Which of the following is/are TRUE about smooth muscle?

• A) Smooth muscle lacks the striations of skeletal muscle.
• B) Smooth muscle cells are long and tapered.
• C) Generally smooth muscle forms the walls of hollow viscera and tubes.
• D) Hollow organs, such as the gallbladder, contain smooth muscle.
• E) All of the above.

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Definitions:

Acetylcholine

A neurotransmitter in the nervous system that plays complex roles in transmitting nerve impulses at synapses, including muscle stimulation, attention, arousal, and memory.

Norepinephrine

A neurotransmitter and hormone involved in the body's "fight or flight" response, regulating heart rate, blood pressure, and sugar levels.

Agonist

A chemical or drug that binds to receptors in the brain and causes a reaction or response similar to a naturally occurring substance.

Absolute Refractory Period

a period immediately following the transmission of a nerve impulse when a neuron is not responsive to stimulation from another impulse.