Skeletomuscular

1. where platelets and blood cells form
5. bone that is light and full of holes (pores)
9. a mineral stored in bone that is used in both nervous and muscle tissues
10. the type of neuron that controls muscle cell responses
13. a type of filament that needs to be moved so myosin heads can bind
14. protects an animal from the outside and requires molting
17. what a human embryo skeleton is made of
18. the type of reticulum found in muscle cells
20. the type of control that skeletal muscles are under in the nervous system
22. the thin filament in muscle cells
23. support structure for muscles to pull against

2. the name for a muscle cells
3. connects bones together
4. occurs when the body is stiff immediately after death due to muscle cell metabolism
6. consists of the arms and legs
7. where two bones meet
8. the contraction unit of a muscle cell
11. cells that create bone tissue
12. skeleton found in invertebrates such as worms
15. connects muscles to bones
16. when bones lose density
19. consists of the skull, vertebral column, and ribs
21. a molecule needed for muscle cell contraction