Cellular Respiration

Definition: The reaction between oxygen and nutrients that the cell uses to extract the energy it needs.

Location: Inside the cells’ mitochondria

Equation: Nutrients + oxygen = energy + carbon dioxide + water

Respiratory System: Answer the following questions (p 173) • Name the two parts of the respiratory

system.

• List the parts of the Respiratory tract.

The Two Parts of the Respiratory System:

1. The Respiratory Tract

2. The Lungs

The Parts of the Respiratory Tract:• The nasal passages• The pharynx• The trachea• The bronchi (branch out into bronchioles)

Write the FUNCTION of each of the following six Respiratory Tract structures

(p174)

• Nasal Passages

• Pharynx

• Larynx

• Trachea

• Bronchi

• Lungs

Nasal Passages

Pharynx (throat)

Pharynx

Larynx

Trachea, Bronchi and Larynx

Lungs

Smoker’s Lung

Gas Exchange within the Lungs

Write the following concepts in your notebook:• Diffusion: Substances will move from an area

where they are at a high concentration to an area where they are at a lower concentration.

• Substances will move from an area of high pressure to an area of lower pressure

• As pressure INCREASES concentration INCREASES.

• As volume INCREASES concentration DECREASES.

Diffusion Animation

http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion_works.html

Mechanics of Breathing

• Put your hands on your rib cage and take a deep breath. Describe what happens to the volume and pressure of your lungs

• After you’ve taken in a deep breath, keep your hands on your rib cage and exhale. Describe what happens to the volume and pressure of your lungs.

Gas Exchange in the Lungs Animation

http://www.aboutkidshealth.ca/En/HowTheBodyWorks/

IntroductiontotheRespiratorySystem/Pages/GasExchange.aspx

Overview of Respiratory System and Gas Exchange

Animationhttps://www.youtube.com/watc

h?NR=1&v=Z1h29R82mVc&feat

ure=endscreen

Answer the following questions.

1. Draw a diagram of the alveoli with their blood vessels.

2. Include oxygen and carbon dioxide on your drawing and indicate their directions of movement with arrows.

3. Describe how gas exchange between the blood and the lungs occur.