Human Biology

3. glands that produce hormones and secrete them into the circulatory system.
4. a single individual.
6. organs that form the skin and protects the body from infection.
8. a group or layer of cells that work together to perform a specific function.
10. a network of vessels moving fluids back to the circulatory system and providing important immune functions.
11. the study of disease.
12. organs and fluids that transport materials like oxygen and nutrients throughout the body.
16. a network of cells, tissues, and organs that help with fighting infections and disease.
17. the basic unit of life
19. a self-contained group of tissue that performs specific functions in the body.
20. the study of the physical and chemical processes that take place in an organism.

1. a set of tissues with the ability to change shape, connected to the skeletal system.
2. group of organs consisting of the gastrointestinal tract that breaks down food.
5. coordinates the activities of muscles and organs.
7. the study of the formation and development of an embryo and fetus.
9. the study of cancer.
13. organs and tissues involved in the uptake of oxygen and the release of carbon dioxide.
14. tissues, glands, and organs involved in producing offspring.
15. provides support and protection for the body's internal organs.
18. the study of how various parts of an organism are connected and how they function.