Question: What does digestion mean, and where does the process happen in your body? Homework: Respiratory Worksheet
Digestive System
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.
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
Excretion Removal of wastes from the body in form of urine, fecal matter all materials are filtered from blood or digestive system and removed.
Excretory System
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!!!
Kidney Connect to ureter, which attaches to the urinary bladder Blood enters kidney and waste (urea, water, etc.) urine
Dialysis What if kidneys break? nothing to filter out wastes! if no kidney donor, blood must be filtered by machine.
Skeletal System
Skeletal System- Made up of 206 bones in adult. protects internal organs provides structure for body *MAKES IMMUNE SYSTEM- makes your white blood cells
Immune System
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
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
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.
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!
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
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.
Question: What is the difference between a flu shot and a shot for tetanus? Homework: