Human Anatomy

2. The cartilaginous tube that connects the larynx to the bronchi, also known as the windpipe.
5. The dome-shaped muscle that separates the chest cavity from the abdomen and drives respiration.
7. The bones that make up the fingers and toes.
8. The longest and strongest bone in the human body, located in the thigh.
11. The iron-rich protein in red blood cells that carries oxygen throughout the body.
13. A tough band of connective tissue that links bone to bone at a joint.
16. The smallest blood vessels in the body that connect arteries to veins.
18. The primary pigment responsible for giving human skin, hair, and eyes their color.
19. A glandular organ that secretes digestive enzymes into the small intestine and insulin into the bloodstream.
20. The muscular tissue of the heart.

1. A tough band of fibrous connective tissue that connects muscle to bone.
3. The largest part of the brain, responsible for voluntary activities, memory, and thought.
4. A flap of cartilage at the root of the tongue that depresses during swallowing to cover the windpipe.
6. Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
9. The basic structural and functional microscopic unit of the kidney.
10. The master gland of the endocrine system, located at the base of the brain.
12. The long, coiled organ where most of the chemical digestion and absorption of nutrients occurs.
14. A small, pear-shaped organ beneath the liver that stores and concentrates bile.
15. The outermost, non-vascular layer of the skin that serves as a protective barrier.
17. The involuntary, wave-like muscle contractions that move food through the digestive tract.