Across
- 3. fertilized egg cell repeatedly divides to form a hollow ball of cells
- 4. disease that occurs in fetal development and is present at birth
- 5. sac of blood vessels that connects a mother and child
- 10. primary reproductive hormone in men
- 14. disease that is severe but short lasting
- 16. disease that occurs when the immune system attacks the body
- 17. animal that transmits an infectious disease
- 18. main reproductive organs in women
- 21. main pigment responsible for skin color
- 22. disease that is caused by gradual loss of organ function
- 23. lymph node group located in ileum of the small intestine are _____ patches
Down
- 1. process by which artificial kidneys work by using membrane to separate molecules
- 2. hormone produced by thyroid gland
- 6. bacteria that live in the absence of oxygen
- 7. disease that cannot be spread person to person
- 8. oil that waterproofs the skin and keeps it soft and flexible
- 9. the time between a person becoming infected and displaying symptoms
- 11. a substance that stimulates the body to develop immunity to a pathogen
- 12. chemical messenger produced by white blood cells and causes inflamation
- 13. a tumor that shows no tendency to spread
- 15. body system consisting of various glands that produce hormones
- 19. skin structures that help regulate body temp
- 20. part of the body's specific defense against a unique pathogen