Chapter 16 Control

2. the inner layer of the eye that begins along the sides of the lens and continues around to the back of the eye
6. fast-acting defense built up as a response to a prior infection
9. the second-largest part of the brain, nerves that connect your cerebrum to your body pass through here
10. lymphocytes that can attack foreign organisms or call for help from B cells
12. special white blood cells that attack infection
15. below the cerebrum and in front of the cerebellum, helps control many bodily functions
17. final line of defense in the immune system – only attack
18. continuous with the brain stem and extends down your back, relays impulses between your brain and the rest of your body
19. local response, When cells are damaged, they release special chemicals that cause changes in nearby blood vessels (swelling)
20. chemicals found on cell membranes of foreign organisms

1. The remainder of the nervous system
3. proteins that react against specific antigens
4. skin has several different types of sensory neurons, each able to respond to a different stimulus
5. your brain and spinal cord
7. the largest portion of the brain
8. When the airborne molecules contact the mucous membrane, these neurons are stimulated, sending impulses to the brain
11. fluid containing a dissolved substance enters the hole and stimulates the neurons, you taste something
13. an opening in the iris that allows light to enter into the eye
14. receiving ready-made antibodies from an outside source
16. an immediate, inborn (not learned - innate), involuntary reaction to a stimulus