Respiratory, Circulatory & Skeletal Systems

2. Vessels that transport deoxygenated blood and metabolic waste products back toward the heart.
5. A flexible column of vertebrae that protects the spinal cord and provides structural support for the torso.
10. A muscular pump that continuously pushes oxygenated blood to the body and deoxygenated blood to the lungs.
11. A flat, T-shaped bone situated in the center of the chest. It connects to the ribs to form the rib cage, protecting vital organs like the heart and lungs.
12. The bony structure of the head that protects the brain. It is comprised of multiple fused bones that act together as a single protective organ.
14. Commonly called the voice box, it connects the throat to the windpipe and contains the vocal cords.

1. Elastic blood vessels that carry oxygen-rich blood away from the heart to all body tissues.
3. The primary entrance for air, where it is warmed, humidified, and filtered by hairs and mucus as you inhale.
4. Tiny, thin-walled blood vessels that form a network between arteries and veins, allowing for the direct exchange of oxygen, nutrients, and waste with cells.
6. Also known as the windpipe, this cartilaginous tube serves as the main airway, connecting the throat to the lungs.
7. The primary organs of respiration where the actual exchange of oxygen and carbon dioxide takes place.
8. The throat, which serves as a passageway for both air and food.
9. The longest, heaviest, and strongest bone in the body, located in the thigh. It bears the body's weight and enables movement of the leg.
10. he long bone located in the upper arm, running from the shoulder to the elbow. It provides attachment points for major muscles, allowing for complex arm movement.
13. The fluid tissue that acts as the transport medium, carrying cells, gases, hormones, and nutrients.