Cardiovascular
This muscular organ pumps blood throughout the body.
What is the heart?
The primary organs of the respiratory system where gas exchange takes place.
What are the lungs?
The central nervous system consists of the spinal cord and this organ.
What is the brain?
The muscular tube that carries food from the mouth to the stomach.
What is the esophagus?
Connective tissue that attaches muscle to bone.
What is a tendon?
These blood vessels carry oxygen-rich blood away from the heart.
What are arteries?
This dome-shaped muscle located below the lungs is the main muscle of respiration.
What is the diaphragm?
The basic working unit of the brain, also known as a nerve cell.
What is a neuron?
This organ produces bile to help break down fats.
What is the liver?
Connective tissue that connects bone to bone.
What is a ligament?
These microscopic blood vessels are where oxygen and nutrient exchange occurs.
What are capillaries?
The medical term for the "windpipe".
What is the trachea?
The gap or junction between two nerve cells where chemical signals are passed.
What is a synapse?
The longest section of the digestive tract where most nutrient absorption occurs.
What is the small intestine?
The long bone located in the upper arm.
What is the humerus?
The lower pumping chambers of the heart.
What are the ventricles?
The tiny air sacs in the lungs where oxygen enters the blood.
What are alveoli?
The largest part of the brain, responsible for voluntary movements, learning, and memory.
What is the cerebrum?
The wavelike muscle contractions that move food through the digestive tract.
What is peristalsis?
The largest and strongest bone in the human body, located in the thigh.
What is the femur?
The body's largest artery, which originates from the left ventricle.
What is the aorta?
The flap of cartilage that prevents food from entering the trachea during swallowing.
What is the epiglottis?
The protective covering around nerve fibers that speeds up signal transmission.
What is the myelin sheath?
This organ stores bile until it is needed for digestion.
What is the gallbladder?
The spongy tissue inside some bones where blood cells are produced.
What is bone marrow?