Which One of the Following Is Characteristic of Cardiac and Smooth

question 26

Multiple Choice

Which one of the following is characteristic of cardiac and smooth muscle, but not skeletal muscle?

• A) voluntary contraction
• B) striated appearance
• C) presence of gap junctions
• D) presence of actin and myosin in muscle cells
• E) contraction is initiated by motor neurons

---

Definitions:

Psychomotor Retardation

A slowing of thought and a reduction of physical movements in an individual, which can be a feature of major depressive disorder.

Sexual Dysfunction

Conditions affecting any stage of the sexual response cycle, hindering the person or couple from achieving pleasure during sexual activities.

Dopamine Systems

Brain pathways that use dopamine as a neurotransmitter, playing crucial roles in movement, reward, and motivation.

Bipolar Disorder

A mental disorder characterized by significant mood swings that include emotional highs (mania or hypomania) and lows (depression).