| A | B |
|---|
| lungs | More then one organ used for breathing in the chest of humand beings and other animals with backbones. |
| tendons | More then one strong cord or band of tissue that attaches a muscle to a bone or other part of the body |
| ligament | A band of strong tissue |
| skull | The bony framework of the head in animals with a backbone |
| plasma | the clear, yellow liquid that forms the watery part of blood |
| appendix | A short, hollow pouch that is attached to the large intestine |
| spinal cord | A thick cord of nerve tissue running through the center of the backbone |
| marrow | The soft substance that fills the hollow parts of bones |
| nerves | More then one bundle of fibers that carry messages between the brain and the spinal cord and other parts of the body |
| vein | One of the the blood vessels taht carry blood from all parts of the body to the heart |
| kidney | Either of two organs in the body that are shaped like a very large bean |
| skeleton | A framework that supports and protects the body of an animal |
| artery | One of the blood vessels that carries blood away fromthe heart |
| stomach | A large muscular pouch that receives food and helps to break it down |
| tonsils | More the one small, oval pieces of flesh in the throat at the back of the mouth |
| muscles | A tissue in the body that is made of strong fibers |
| esophagus | The muscular tupe through which food moves from the hroat to the stomach |
| vertebrae | one of the small bones that make up the backbone |
| bloodstream | The blood flowing through the body |
| epidermis | A protective outer layer of the skin |
