Sponge 1 Imagine that you have just been

Sponge #1 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 Functions KEY CONCEPT The respiratory and circulatory systems bring oxygen and nutrients to the cells.

• The respiratory system is where gas exchange occurs. – What are the gases involved with the respiratory system? sinus nose mouth epiglottis trachea lungs

• The respiratory system is where gas exchange occurs. – picks up oxygen from inhaled air – expels carbon dioxide and water sinus nose mouth epiglottis trachea • What are the waste products of the respiratory system? • CO 2 and water vapor lungs

Draw and label the parts of the respiratory system

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

The lungs contain the • Bronchi: passage of airway into lungs • Bronchioles: passage to the air sacs of the lungs • Alveoli: absorb oxygen- gas exchange with blood bronchiole Bronchi Or Bronchus alveoli bronchiole

Draw and label the parts of the lungs bronchiole Bronchi or Bronchus alveoli

• Breathing involves the diaphragm and muscles of the rib cage. • Air flows from areas of high pressure to low pressure. Air inhaled. Air exhaled. Muscles and rib cage relax. Muscles contract and rib cage expands. Diaphragm flattens and moves downward. Diaphragm relaxes and rises.