Human body, Food and nutrition

5. Is the process in which a stimulus produces a response that opposes the original stimulus.
8. Type of tissue that provides support for the body and connects its parts.
9. Tissue that lines the interior and exterior body surfaces.
10. One of the nutrients the body needs.
11. Compound made up of carbon, hydrogen, and oxygen atoms, type of nutrient that is the major source of energy in the body.
12. System that brings in oxygen needed for cellular respiration.
14. System that produces gamates.
15. Lipid made up of fatty acids and glycerol.
17. Is a group of organs that perform closely related functions.
19. It is one of the body’s most important organs for homoestasis.
21. System that recognizes and coordinates the body’s response to changes in its internal and external environments.
23. System that breaks down food; absorbs nutrients and eliminates wastes.

1. Movements of the body are possible because of what tissue?
2. Macromolecule that contains carbon, hydrogen, oxygen and nitrogen; needed by the body for growth and repair.
3. System that helps protects the body from disease.
4. System that transports oxygen, nutrients, and hormones to cells.
6. What contain the molecules in food?
7. Measure of heat energy in food
13. Group of cells that perform a single function is called a tissue.
16. Describes the relatively constant internal physical and chemical conditions that organisms maintain despite changes in internal and external environments.
18. System that works with skeletal system to produce voluntary movement.
20. Group of different types of tissues that work together to perform a single function or several related functions is called an
22. Is the basic unit of structure and function in living things.