Across
- 2. Tiny structural unit in the kidneys that filters out wastes like blood, balances water and electrolyte level, and creates urine.
- 7. One of two thin-walled chambers of the heart that receive blood returning from the body or lungs. Low-oxygenated blood enters the right atrium while oxygen-rich blood enters the left atrium.
- 8. Mini organs in your mouth that produce saliva daily. It helps you digest food and acts as the first step of digestion.
- 13. The network of nerves outside of the brain and spinal cord. It acts as a communication relay between the nervous system and the rest of the body.
- 17. The most abundant type of neurons located inside the central nervous system.
- 18. A large dense muscle group along the vertebral column that keeps the spine upright, allows people to bend backward, and controls posture.
- 19. Non-neural supporting cells in the nervous system. They provide essential protection, maintenance, and structural support.
- 20. Small, hair-like structures that line the airways like the trachea, bronchi, and bronchioles.
Down
- 1. A group of muscles lined in between the ribs to stabilize the thoracic wall.
- 3. Iron rich protein in red blood cells that transports oxygen to the body and the lungs.
- 4. The attachment point of a muscle, normally on a more stable, less flexible bone. The more movable attachment point that is pulled toward the origin during muscle contraction.
- 5. The process in the kidney’s renal tubes that important substances like glucose, amino acids, vitamins, ions, and water are transported from the filtrate back to the blood through the nephrons in the kidney.
- 6. A thin membrane that lines your chest wall and your lungs. It cushions your lungs to make breathing easier.
- 9. Thick acidic mixture created inside the stomach that is made up of partially digested food, hydrochloric acid, water, and digestive enzymes.
- 10. The amount of fresh air breathed into the alveoli per minute that allows oxygen to be breathed in and carbon dioxide to be breathed out.
- 11. Relaxation and contraction of muscles that move wastes, food, and liquids through the digestive tract.
- 12. The small gap between two neurons where electrical and chemical signals are transmitted.
- 14. One of two major blood vessels that branch from the abdominal aorta in order to supply oxygen-rich blood to the kidneys.
- 15. Rod-like organelle inside muscle fibers that is responsible for muscle contraction.
- 16. Two lower chambers of the heart, left and right, that pump blood out of your heart into the circulatory system throughout the rest of your body.