8-e. respiratory system. moves oxygen from the outside envoirment into the body. removes water, and...

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Chapter 5 8-E

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Page 1: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Chapter 5 8-E

Page 2: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Respiratory system. Moves oxygen from the outside envoirment

into the body.Removes water, and carbon dioxide.

Page 3: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Respiration. The process in which oxygen and glucose

undergo a complex series of chemical reactions inside cells.

Air- comprised of 78 percent nitrogen, 21 percent oxygen and 1 percent carbon dioxide and other gases.

Page 4: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Path of air.Nose: lining coded with mucus, cilia and it traps

particulars and warms and moists the hair.Pharynx: passage way for air and food.Epiglottis: flap of tissue that blocks the trachea so

water and food doesn’t go down the wind pipe.Larynx: voice box. Trachea: the airway to the lungs. Ribbed with cartilage

to keep from collapsing. Bronchi: tubes that branch off in the lungs.Lungs: things that make you breathe, contain alveoli.Alveoli: tiny sacs of lung tissue specialized for the

movement of gases between air and blood.

Page 5: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Muscles for breathing.Diaphragm: large dome shaped muscle that

pushes the air in and out of the lungs.As the dome moves up, you exhale.As the dome moves down you inhale.

Page 6: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

How you speak.As you breathe air passes over the vocal

cords, causing them to vibrate.Two vocal cords provide all of the sounds we

make.As the length of the vocal cords change the

pitch of your voice goes up to down.

Page 7: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Smoking and health.Three chemicals: tar, carbon monoxide, and

nicotine.Tar: dark sticky substance that causes the

cilia to clump and not function properly. Carbon monoxide: clear odor less gas, which

causes hemoglobin to not function properly. nicotine: dangerous chemical, that speeds up

the activities of the nervous system, heart, and other organs. Makes the heart beat faster, and blood pressure rise. Produces a addiction or physical appendence on the drug.

Page 8: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Health problems link to smoking.Bronchitis.Emphysema.Lung cancer.Heart attacks.*passive smoking, or second hand smoke can

cause nonsmokers to have the same problems.

Page 9: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

The excretory system.A system in the body that collects wastes

produced by cells and removes the wastes from the body.

Also called excretion.Urea: a chemical that comes from the

breakdowns of protein.Urine: a watery fluid produced by your

kidneys.

Page 10: 8-E. Respiratory system. Moves oxygen from the outside envoirment into the body. Removes water, and carbon dioxide

Parts of the excretory system.Kidneys: filtering systems on each side of the

spine which contain nephrons, eliminate urea, excess water and other waste material.

Ureter: tubes that carry waste to kidney to bladder.

Urinary Bladder: holding tank for urine.Urethra: tube that discharges urine.Nephron: tubes surrounded by capillaries,

where liquids are exchanged between blood and water.