skeletal system, osteocytes, osteoclasts, osteoblasts, red bone marrow, yellow bone marrow, Synovial joints, exoskeleton, calcium, cartilage, ligaments
The functions of the muscles are to help you move, maintain muscle tone and posture, generate heat and generate your heartbeat.
There are three main types of muscles:
Skeletal, smooth and cardiac.
Composed of muscle cells (fibers actin/myosin), connective tissue, blood vessels, nerves skeletal muscle attaches to the bones of skeleton.
Smooth muscle is found in the walls of hollow organs such as the stomach, urinary bladder, and intestines it has no striations
and is involuntary.
Cardiac muscle is found only in the heart. It is branched and has striations and thick lines (intercalated discs) and is involuntary.