Muscular system is the organ system whose primary function is movement and flexibility.

Respiration is the process by which a body gains and uses oxygen and gets rid of carbon dioxide and water.

The central nervous system is the brain and the spinal cord.

The skeletal system is the organ system whose primary functions is to support and protect the body.

The cardiovascular system is a collection of organs that transport blood throughout the body.

The three kinds of muscles in your body are the smooth, cardiac, and skeletal muscle.

The respiratory system is a collection of organs whose primary function is to take in oxygen and expel carbon dioxide.

The peripheral nervous system is all the parts of the nervous system except the brain and the spinal cord.

The parts that make up the skeletal system are the bones, cartilage, and the connective tissue.

Your heart, blood, and blood vessels make up your cardiovascular system.

Tendons are strands of tough connective tissue that connects your skeletal muscles and your bones.

Pharynx is the passage from the mouth to the larynx and the esophagus.

The three main parts of the brain are the cerebrum, the cerebellum, and the medulla.

The joint is a place where two or more bones meet.

The pulse is caused by the rhythmic contractions of the heart pumping blood into arteries.

A lever is a simple machine that consists of a bar that pivots at a fixed point called the " fulcrum."

The larynx is the area of the throat that contains the vocal cords and produces vocal sounds.

The largest part of the brain is called the " cerebrum."

The three joints are the gliding joint, ball-and-socket joint,and the hinge joint.

Pulmonary and systemic are the two types of circulation.

Skeletal muscles around the broken bone become smaller and weaker.

Breathing happens when you involve your lungs, muscles in the rib cage, and the diaphram.

The second-largest part of your brain is called the "cerebellum."

Osteoporosis is a disease in which the bones become less dense.

Capillary is a tiny blood vessel that allows an exchange between blood and cell in tissue.