| A | B |
|---|
| tissue | A group of similar cells that perform a specific function in an organism |
| muscle tissue | A body tissue that contracts or shortens, making body parts move |
| nerve tissue | A body tissue that carries messages back and forth between the brain and every other part of the body |
| organ | A structure in the body that is composed of different kinds of tissues |
| organ system | A group of organs that work together to perform a major function in the body |
| vertebrae | The bones that make up the backbone of an animal |
| marrow | The soft tissue that fills the internal spaces in bone |
| cartilage | A connective tissue that is more flexible than bone and that gives support to some parts of the body |
| joint | A place where two bones come together |
| ligament | Strong connective tissue that holds together the bones in a movable joint |
| involuntary muscle | A muscle that is not under conscious control |
| voluntary muscle | A muscle that is under conscious control. |
| skeletal muscle | A muscle that is attached to the bones of the skeleton. |
| tendon | Strong connective tissue that attaches a muscle to a bone |
| smooth muscle | Involuntary muscle found inside many internal organs of the body |
| cardiac muscle | Muscle tissue found only in the heart |
| epidermis | The outermost layer of the skin |
| dermis | The lower layer of the skin. |
| clavicle | Also called the collar bone |
| scapula | Also called the shoulder blade |
| mandible | Also called the jawbone |
| femur | Also called the thigh bone |
| humerus | Bone of the upper arm |
| Radius | Lower arm bone that meets on the thumb side |
| muscle tissue | A body tissue that contracts or shortens, making body parts move. |
| ulna | lower arm bone that meets on the pinky finger side |
| patella | also known as the knee cap |
| biceps | muscle on top of the humerus |
| triceps | muscle below the humerus |
| gluteus maximus | large muscle in the buttocks |
| pectoralis | chest muscles |
| gastrocnemius | calf muscle |
| pelvic girdle | hip bones |
| Integumentary | system with skin, hair, and nails |
