The Circulatory System
This is the main organ of the circulatory system, a muscular pump that pushes blood through your body.
What is the heart?
This system is composed of the brain and spinal cord.
What is the central nervous system?
These are the primary organs of the respiratory system, located within the chest cavity.
What are the lungs?
This process is the mechanical and chemical breakdown of food into smaller components.
What is digestion?
This is the hard, dense connective tissue that provides structure and support for the body.
What is bone?
These three types of vessels—arteries, veins, and capillaries—are responsible for transporting blood.
What are blood vessels?
These specialized cells transmit nerve impulses throughout the body.
What are neurons?
This is the process by which air is moved into and out of the lungs.
What is breathing or respiration?
This organ is a long, coiled tube where most of the digestion and absorption of nutrients occurs.
What is the small intestine?
This type of joint is found in the knee and elbow, allowing for movement in one plane.
What is a hinge joint?
This fluid, made up of plasma, red blood cells, white blood cells, and platelets, flows through the blood vessels.
What is blood?
This is the largest part of the brain and is responsible for thought, memory, and voluntary movement.
What is the cerebrum?
This muscle is located at the base of the chest cavity and contracts to help draw air into the lungs.
What is the diaphragm?
This organ produces bile, a substance that helps digest fats.
What is the liver?
This soft tissue is found within bones and is responsible for producing blood cells.
What is bone marrow?
This component of blood is responsible for carrying oxygen from the lungs to the rest of the body.
What are red blood cells?
This part of the nervous system is responsible for controlling involuntary actions like breathing and heartbeat.
What is the autonomic nervous system?
These tiny air sacs at the ends of the bronchioles are where oxygen and carbon dioxide are exchanged.
What are alveoli?
This stomach acid helps break down food and kills harmful bacteria.
This stomach acid helps break down food and kills harmful bacteria.
This connective tissue connects muscle to bone.
What is a tendon?
This network of vessels and nodes works alongside the circulatory system to collect and filter excess fluid from tissues.
What is the lymphatic system?
This protective sheath surrounds nerve fibers and helps speed up the transmission of nerve signals.
What is the myelin sheath?
This disease is characterized by the inflammation of the airways, which can cause coughing, wheezing, and shortness of breath.
What is asthma?
This series of muscle contractions moves food through the digestive tract.
What is peristalsis?
This fibrous connective tissue connects bone to bone, providing stability to joints.