Across
- 1. when all cell division stops
- 4. where cell division (mitosis) takes place
- 7. is the technical name for the hair of the head
- 9. the hair growth cycle starts again
- 11. protofibrils then twist around each other
- 13. soft, elastic layer of the hair-strand
- 14. muscle that causes the hair to stand
- 17. serves as protection from the sun’s damaging rays
Down
- 2. Sebum mixes with the body’s perspiration
- 3. is the portion of hair under the skin’s surface
- 5. total lack of pigmentation in the hair and skin
- 6. form bundles of pigment called melanosomes
- 7. which is a outer covering of transparent scales
- 8. also called the pith or marrow
- 10. produce sebum & send up through the follicle
- 12. is the technical name for beard
- 15. made of chains that take the shape of a helix/coil
- 16. determine the growing stages of the hair