PH 17 Respiration and Excretion

Mr & Mrs Smith's Life Science

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Unit 3 Human Biology and Health
Chapter 17 Respiration and Excretion

Last Updated 6/8/2006 6/7/2006 5/29/2006 11/20/2005 9/16/2005 9/3/2005

Previous: Circulation Next: Fighting Disease

Teacher Resources Student Extra Credit

17-1 The Respiratory System
Respiratory System Functions
The Path of Air
Gas Exchange
How You Breathe

17-2 Smoking and Your Health
Chemicals in Tobacco Smoke
Health Problems and Smoking

17-3 The Excretory System
Filtration of Wastes
Excretion and Homeostasis

Day 1

Topic Respiration and Excretion

Objectives
Describe the functions of the respiratory system.
identify the structures that air passes through as it travels to the lungs.
describe what happens during gas exchange and breathing.

State Goals

Classwork-Homework

Vocabulary
Respiration: carry oxygen to cells, getting rid of carbon dioxide, and releasing energy

Prentice Hall 564-572

Science Explorer pages 213-217 #1-30

TEC

Resources

Day 2

Topic 17-1 Respiration

Objectives
Compare breathing and respiration.
Explain the process of breathing.

State Goals

Classwork-Homework

Vocabulary
Cilia: tiny hairlike structures
Pharnyx: throat
Trachea: windpipe
Bronchi: tube leading to the lungs
Lungs: main organs of the respiratory system
Alveoli: microscopic air sacs in the lungs
Diaphragm: sheet of muscle below the lungs
Larynx: organ located on top of the trachea that contains the vocal cords
Vocal Cords: folds of connective tissue that produces your voice
Inhale: to breathe in
Exhale: to breathe out

In an average resting adult, the lungs take up about 250ml of oxygen every minute while excreting about 200ml of carbon dioxide. During an average breath, an adult will exchange from 500 ml to 700 ml of air. This average breath capacity is called tidal volume.

Diseases of the Respiratory System

Obstructive Diseases	Emphysema, Bronchitis, Asthma
Restrictive Diseases	Fibrosis, Sarcoidosis, Alveolar Damage, Pleural Effusion
Vascular Diseases	Pulmonary Edema, Pulmonary Embolism, Hypertension
Infectious, Environmental and Other	Pneumonia, Tuberculosis, Asbestosis, Particulate Pollutants

Respiratory System Diagram Page 8

TEC

Resources

Day 3

Topic Lung Model

Objectives
Make a model of the lungs and diaphragm.
Explain how air is cleaned, warmed, and moistened.
Explain gas exchange in the lungs and between the blood and body cells.
Compare the gas makeup of inhaled air and exhaled air.

State Goals

Classwork-Homework

Gas Exchange

A Breath of Fresh Air Prentice Hall page 573 -Science Explorer 220-221
Use small balloon and large balloon, 2-liter plastic bottle, scissors

TEC

Resources

Day 4

Topic 17-2 Smoking and Your Health

Objectives
Identify the harmful chemicals contained in tobacco smoke.
Explain the effects of tobacco on the body.

State Goals

Classwork-Homework

Vocabulary
Tar: dark sticky substance
Carbon Monoxide: colorless, odorless gas
Nicotine: stimulant found in tobacco
Addiction: physical dependence
Bronchitis: irritation of the breathing passages; small passages become narrower
Emphysema: disease that destroys lung tissue and causes breathing difficulties

Smoking

Prentice Hall 574-578

Science Explorer pages 224-226 31-10

TEC

Analyzing Smoking Costs Science Explorer page 228

Resources

Day 5

Topic 17-3 The Excretory System

Objectives
Explain how waste products are formed and removed by the body.
Describe how the kidneys act as a filtering system or the blood.

State Goals

Classwork-Homework

Vocabulary
Excretion: removing waste products from the body
Urea: chemical that comes from the breakdown of proteins
Kidney: organ that removes waste products from the blood
Urine: watery fluid that contains urea and other wastes
Ureter: tube that carries liquid waste from the kidneys to the bladder
Urinary Bladder: organ that stores liquid waste
Urethra: small tube urine uses to leave the bladder
Nephron: filtering factories that remove wastes from blood and make urine

Prentice Hall 579-583

Science Explorer pages 231-233 #1-16

TEC
Urinalysis Science Explorer page 325

Resources

Day

Topic

Objectives

State Goals

Classwork-Homework

TEC

Resources

Previous: Circulation Next: Fighting Disease

Teacher Resources

Activities Investigations Art Resources Web Sites

BODY SYSTEMS

Human Body Quest Group activity to create a presentation about one of the body's systems. 10 different systems. Presentation planner could be an individual asignment.

Inside the Human Body: Science Fact File Investigate the systems of the human body

Levels of Organization In unicellular (single-celled) organisms, the single cell performs all life functions. It functions independently. However, multicellular (many celled) organisms have various levels of organization within them. Individual cells may perform specific functions (causing a division of labor) and work together for the good of the entire organism. The cells become dependent on one another. Explore Cells, Tissues, Organs, Organ Systems, and Organisms.

GAS EXCHANGE