Imagine that you have just been running or exercising strenuously. Please give examples of what happens to your body.

How do you feel?Heart?Lungs?Chest?

30.1 Respiratory and Circulatory Functions

Word Bank:

Lungs

Epiglottis

Bronchioles

Nose

Trachea

Alveoli

Diaphragm

Bronchi

Mouth

Practice Test

1.

8.

9.

30.1 Respiratory and Circulatory Functions

nose

epiglottis

trachea

bronchi

bronchioles

diaphragm

alveoli

1.

8.

9. lungs

mouth

29.4 Central and Peripheral Nervous Systems Set up Cornell Notes on pg. 69•Topic: 30.1 Respiratory Functions•Essential Question:

1. On pg. 69 make a respiratory system tree map describing the functions of each…

• Nose & mouth• Epiglottis• Trachea • Lungs• Bronchi• Bronchioles• Alveoli

2.1 Atoms, Ions, and Molecules

30.1 Respiratory Functions

KEY CONCEPT

The respiratory and circulatory systems bring oxygen and nutrients to the cells.

30.1 Respiratory Functions

nose

sinus

mouth

epiglottis

trachea

lungs

• The respiratory system is where gas exchange occurs.

– What are the gases involved with the respiratory system?

– picks up oxygen from inhaled air – expels carbon dioxide and water

The respiratory system moves gases into and out of the blood.

• It is the only place where gases in the blood are exchanged with gases from the atmosphere

• What happens when areas of the body do not get oxygen?

• What happens when a tourniquet is put on?

bronchiole

alveoli

Bronchi or Bronchus

Draw and label the parts of the lungs on the bottom of pg 68

trachea

• Breathing involves the diaphragm and muscles of the rib cage.

• Air flows from areas of high pressure to low pressure.

Air inhaled.

Muscles contract andrib cage expands.

Diaphragm flattensand moves downward.

Air exhaled.

Muscles andrib cage relax.

Diaphragm relaxesand rises.

30.2 Respiration and Gas Exchange

• Review your tree map with your table.

bronchi

alveolibronchioles

• Nose and mouth are entry points• Epiglottis regulates airflow into the

trachea- and keeps food from blocking the airways

• Trachea is the major airway to the lungs• Lungs are organs that absorb oxygen and

exhale carbon dioxide• Bronchi are bronchioles are airways to the

alveoli• **Alveoli are main sites of gas exchange;

absorb oxygen

Functions of the parts of the respiratory system