Emerald Robinson: Hi! I am Emerald Robinson and in this What is? video we are going to discuss the system that allows us to get around, the musculoskeletal system.
The musculoskeletal system is the organ system that combines parts of the skeletal and muscle systems to function in two ways, to allow movement and to protect the bodys internal organs. It consists of bones, muscles, tendons, ligaments and other types of tissues that bind muscles and skeleton together. Lets take a look at the two main parts separately.
The adult human skeleton consists of 206 bones. Although bones are structural and give our body a shape, its important to remember that bones are living tissue and have other functions.
Marrow found in a center most bones aids in the manufacture of red and white blood cells. Bones also store important minerals like calcium and phosphorus. Our skeletons also protect our most vital organs from injury. For example, our skull protects the brain, while our ribcage encases our heart and lungs. Mini bones in the skeleton meet at joints, structure is necessary for us to bend our limbs.
Ligaments are special cores of connected tissue hold bones together to form joints. The muscles that belong to the muscular skeletal system are voluntary, meaning that we must aside to move them.
Tendons are bands of tough fibrous connective tissue, bind skeleton muscle to bones. Skeleton muscles enable us to walk, run, even stand up right, but they also cover and protect our internal organs, particularly those in the digestive system. The two parts of the muscular skeleton system work together to create movement.
Flexion decreasing the angle between two bones and extension increasing the angle are two common types of movement that occurs when muscles receive signals from our nervous system.
Add a little muscle coordination to these movements courtesy of the brain and we are off and running.