Which of the Following Is TRUE of Cardiac Muscle

question 81

Multiple Choice

Which of the following is TRUE of cardiac muscle?

• A) Its cells contain large numbers of mitochondria.
• B) Its cells are tapered at each end.
• C) It is not striated, like skeletal muscle.
• D) It is under voluntary control.

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Definitions:

Sleepiness

Sleepiness is the state of feeling drowsy or tired, often leading to a decreased ability to remain awake and alert.

Unpredictable

The quality of being unable to be predicted or foreseen, often leading to uncertainty or surprise.

Suprachiasmatic Nucleus

A region in the brain's hypothalamus responsible for controlling circadian rhythms, which are the body's internal biological clock.

Biological Clock

An internal mechanism that regulates bodily rhythms and cycles, such as the sleep-wake cycle, on a roughly 24-hour schedule.