The human heart contains cells that do all of the following EXCEPT
A) generate electrical signals.
B) contract.
C) create new red blood cells.
D) respond to signals from the nervous system.

Question

Quizplus · Accepted Answer

The human heart contains cells that generate electrical signals (pacemaker cells), contract (cardiac muscle cells), and respond to signals from the nervous system. However, it does not contain cells that create new red blood cells; this function is primarily carried out by the bone marrow.

The Human Heart Contains Cells That Do All of the Following