Anatomy Vocabulary

2. Protein filament in muscle cells that functions with actin in contraction.
7. Bone forming cell.
9. Straited muscle that causes movement when contracted
11. The contractile unit of muscle fiber.
12. Type of protein that helps form hair, nails, and skin.
14. Muscle that lines many internal organs. Also known as involuntary muscles.
17. Tough connective tissue bond that attaches bones to each other.
18. Less dense, inner-bone layer with many cavities that contain bone marrow.
20. Tough connective tissue bond that connects muscle to bone.
21. One of the two divisions of the human skeleton; includes the bones of the arms, legs, feet, hands, hips, and shoulders.
23. An involuntary muscle found only in the heart.
25. Formation of bone from osteoblasts.
26. Narrow cavity in the dermis from which hair grows.
27. Pigment in the inner layer of the epidermis that protect against UV radiation.

1. A bone cell that absorbs bone tissue during growth and healing.
3. The outer superficial layer of skin made up of epithelial cells.
4. Small muscle fiber that functions in contraction and consists of myosin and actin protein filaments.
5. Type of marrow that produces red and white blood cells and platelets.
6. Consiously controlled skeletal muscle.
8. Skin layer beneath the epidermis; contains nerve cells, muscle fibers, sweat glands, and hair follicles.
10. Strong, dense outer bone layer that contains haversian systems.
13. Type of marrow that consists of stored fat.
15. A living bone cell that is within the substance of fully formed bones.
16. Smooth muscle which cannot be controlled consiously.
19. Oil producing gland in the dermis that lubricates skin and hair.
22. One of the two divisions of the human skeleton; includes the head, neck, back, and ribcage.
24. Protein filament in muscle cells that functions with myosin in contraction.