| A | B |
|---|
| Epidermis | The outer portion of the skin, formed by epithelial tissue which rests on the dermis |
| Dermis | Dense irregular connective tissue that forms the deep layer of the skin |
| Hypodermis | Loose connective tissue underneath the dermis which connects the dermis to muscle or bone |
| Hemopoiesis | The process of manufacturing blood cells |
| Compact bone | Dense bone matrix enclosing only a few small spaces |
| Cancellous bone | Bone with many small spaces or cavities surrounding the bone matrix |
| Ossification | Bone formation |
| Articular cartilage | Hyaline cartilage that covers the ends of a bone in a joint |
| Axial skeleton | The portion of the skeleton that supports and protects the head, neck, and trunk |
| Appendicular skeleton | The portion of the skeleton that attaches to the axial skeleton and has limbs attached to it |
| Suture | A junction between flat bones of the skull |
| Process | A projection on a bone |
| Meatus | A passageway |
| Foramen | A hole |
| Sinus | A hollowed out space in a bone |
| dermal papillae | little ridges under the epidermis that increase the amount of blood vessels to the epidermis |
| reticular layer | layer in the dermis which allows the skin to stretch without tearing |
| arrector pili | muscle cells which change the position of the hair |
| melanocytes | cells that produce a dark brown pigment in the skin |
| melanoma | skin cancer resulting from the uncontrolled mitosis of melanocytes |
| keretin | protein produced in the stratum granulosum which waterproofs the skin |
| desquamation | process whereby dead cells flake off the skin |
| sebum | oil secreted by sebaceous glands to soften hair and skin |
