Head to Toe
This outer covering is the body's largest organ.
What is the skin?
Most adults have this many bones in their skeleton.
What is 206?
This muscular organ pumps blood throughout the body.
What is the heart?
You use these organs to see.
What are the eyes?
These hard structures begin digestion by chewing food into smaller pieces.
What are the teeth?
The brain and spinal cord together make up this system.
What is the central nervous system?
This bony structure protects the brain.
What is the skull? (Accept: cranium.)
This thigh bone is the longest bone in the human body.
What is the femur?
These blood vessels carry blood away from the heart.
What are arteries?
Many of your taste buds are located on this muscular organ in the mouth.
What is the tongue?
This muscular organ churns food and mixes it with acid and digestive enzymes.
What is the stomach?
This specialized nerve cell carries messages through the nervous system.
What is a neuron?
This dome-shaped muscle beneath the lungs is the main muscle used for breathing.
What is the diaphragm?
These curved bones form a protective cage around the heart and lungs.
What are the ribs?
These blood cells use hemoglobin to carry oxygen.
What are red blood cells? (Accept: erythrocytes.)
This spiral-shaped structure in the inner ear changes sound vibrations into nerve signals.
What is the cochlea?
Most nutrients from food are absorbed in this long organ.
What is the small intestine?
This part at the back of the brain helps coordinate movement and balance.
What is the cerebellum?
The common name for the patella is this.
What is the kneecap?
The shoulder and hip are examples of this type of joint, which allows movement in many directions.
What is a ball-and-socket joint?
The lungs remove this waste gas from the blood so it can be breathed out.
What is carbon dioxide?
This colored part of the eye controls how much light enters through the pupil.
What is the iris?
This large organ produces bile, which helps the body digest fats.
What is the liver?
Part of the brain stem, this structure helps control breathing and heart rate.
What is the medulla oblongata? (Accept: medulla.)
Named for a hero from Greek mythology, this tendon connects the calf muscles to the heel bone.
What is the Achilles tendon?
This tiny, stirrup-shaped bone in the middle ear is the smallest bone in the human body.
What is the stapes? (Accept: stirrup.)
This lower-left chamber of the heart pumps oxygen-rich blood into the aorta and out to the body.
What is the left ventricle?
This word describes the sense of smell, as in the blank system.
What is olfactory?
This gland behind the stomach makes digestive enzymes as well as the hormone insulin.
What is the pancreas?
This nerve carries visual signals from the retina to the brain.
What is the optic nerve?