Patient Care Technician Certification (PCTC) AMCA Practice Exam 2025 - Free Patient Care Technician Practice Questions and Study Guide

The skeletal system is primarily responsible for the production of blood cells, a process known as hematopoiesis. This occurs in the bone marrow, which is found within the hollow cavities of certain bones, particularly in the long bones of the body such as the femur and humerus. The bone marrow produces red blood cells, which carry oxygen throughout the body, white blood cells, which are essential for the immune response, and platelets, which aid in blood clotting.

While the skeletal system does play a role in supporting the body and facilitating movement, it does not produce hormones, nerves, or muscles. Hormones are primarily produced by the endocrine system, nerves are part of the nervous system, and muscles are formed through muscle cells and tissues that are distinct from bone. Therefore, recognizing the role of the skeletal system in blood cell production underscores its importance beyond structural support within the human body.