1. Question:
What does digestion mean, and
where does the process happen in your body?
Homework: Respiratory Worksheet

2. Digestive
System

3. Digestion Digestion as a word BREAK DOWN!!!
x-x-x-x-x-x-x-x  x x x x x x
*Digestion does NOT mean food is absorbed into your body, that is called absorption.

4. Parts Mouth- teeth/saliva Esophagus- tube into your stomach
Stomach- filled with acid, breaks down food
Intestines- absorbs nutrients into bloodstream
Liver- removes toxic materials from blood

5. Excretion Removal of wastes from the body
in form of urine, fecal matter
all materials are filtered from blood or digestive system and removed.

6. Excretory
System

7. Kidney structure Made of many small nephrons
small units where capillaries carry blood to be filtered out
Remaining material (filtered out) is either reabsorbed by body or sent to urinary bladder
**Kidneys filter all of your blood in 45 minutes!!!

8. Kidney Connect to ureter, which attaches to the urinary bladder
Blood enters kidney and waste (urea, water, etc.)  urine

9. Dialysis What if kidneys break? nothing to filter out wastes!
if no kidney donor, blood must be filtered by machine.

11. Skeletal
System

12. Skeletal System- Made up of 206 bones in adult.
protects internal organs
provides structure for body
*MAKES IMMUNE SYSTEM-
makes your white blood cells

13. Immune
System

14. Immune System Lingo
Immune system designed to fight PATHOGENS, or anything that can make you sick
could be bacteria, virus, or other
Different ways of fighting disease
drugs/antibiotics
non-specific reactions
specific reactions- through white blood cells

15. Non-Specific Reactions
General reactions that effect large parts of your body, and are not aimed at one particular part of your body
swelling
fever

16. Specific Reactions
Aimed at preventing a specific disease from entering your body
Antibody/Antigen
Antigen- ALL cells have markers on them called antigens. Your body remembers which combinations belong to you and which belong to pathogens that have made you sick in the past.
Antibody- a matching piece to remember the antigen, marks the cell with the harmful antigen to be destroyed before it can infect you.

17. Your flu shot…
Injects dead viruses with the antigen for this year’s flu strains
your body learns to remember that as a bad antigen
if that flu gets into you, the flu viruses are killed before they can infect you
THIS GIVES YOU IMMUNITY!

18. Your blood type
You either have antigen A, B, both (AB), or neither (O)
If you have antigen A, you have antibody B
If you have both A and B (AB), you have neither antibody
you can receive blood from anyone
If you are O, then you have both antibody A and B
you can ONLY receive O blood

19. Diseases
Allergies
you have antibodies that react with different environmental conditions (pollen, peanuts, etc) that cause you to have a reaction to something that should not make you sick
AIDS
a virus that attacks your white blood cells, killing them so your immune system does not work.

20. Question:
What is the difference between
a flu shot and a shot for tetanus?
Homework: