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 Skeletal system | Organ system whose primary function is to support the body and allow it to move |
| Tendon | Strands of tough connective tissue that connects skeletal muscles to your bones |
| Cartilage | Soft, gel-like padding between bones that protects joints and helps movement |
| Flexor muscle | A muscle that bends part of your body, such as a biceps muscle |
| Extensor muscle | A muscle that straightens part of your body, such as a triceps muscle |
| Dermis | The layer of skin below the epidermis that contains oil & sweat glands, nerves, hair follicles, and more |
| Epidermis- | The surface layer of skin (or cells) on a plant or animal |
| Artery | A blood vessel that carries blood away FROM the heart to the body's organs |
| Vein | A blood vessel that carries blood from the body organs TO the heart |
| Capillary | The smallest blood vessels which connect arteries & veins and that allow exchanges of water, oxygen, carbon dioxide, nutrients and wastes between the blood and tissue cells |
| Pulmonary circulation | The circulation of blood between the heart and lungs |
| Systemic circulation | The circulation of blood between the heart and the rest of the body |