| Term | Definition |
|---|
| gill | An organ found in fish and other aquatic creatures that allows them to breathe. |
| mammary | Pertaining to the breast, modified in female mammals to secrete milk. |
| nest | Shelter built by adult birds to protect their young; made of materials such as twigs and straw or mud and usually built in a tree or thicket , or by cleaning out a hollow in a tree or a burrow in the ground. |
| scales | Flat, hard pieces of skin that cover the body of a fish or reptile. |
| vertebrate | An animal with a backbone and internal skeleton. |
| warm-blooded | Adjective describing animals that maintain a nearly constant body temperature regardless of their surrounding temperature with only slight variation |
| Cerebral cortex | The part of the brain that takes in information; it is made mostly of nerve cells |
| Cochlea | Filled with fluid and hair cells; this is the actual organ of hearing. |
| Cornea | A thin transparent tissue that covers the colored part of the eye |
| Cranium | Eight bones of the skull that surround and protect the brain. |
| Eardrum | A thin membrane that is tightly stretched over the ear canal and vibrates when sound waves hit it. |
| Farsighted | A condition in the eyes in which one can see faraway, but not nearby objects clearly |
| Fibula | The smaller of the two bones in the lower leg that run from knee to ankle |
| Involuntary muscle | A muscle that you cannot consciously move |
| Iris | the colored disc behind the cornea |
| Pupil | A small opening in the center of the iris that regulates the amount of light that enters the eye |
| Retina | Lies along the inner wall of the eyeball; made up of two types of light-sensitive receptor cells |
Combine with other sets
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