Starter April 12 Explain how the circulatory system

Starter: April 12 • Explain how the circulatory system and the lungs work together?

Chapter 14, Section 3 The Respiratory System

Respiratory System Functions • Taking in oxygen • Removing carbon dioxide and water • Work with other systems Table Talk: What other body systems does the respiratory system work with? How? The respiratory system gets glucose from the digestive system to perform cellular respiration. The circulatory system carries both the oxygen and glucose to the cells.

The Air We Breathe In Inhaled Air Nitrogen 78% Oxygen 21% Carbon Dioxide. 03% Other gases. 97% When we exhale, most of what we breathe out is nitrogen(78% ), oxygen (16%), Carbon Dioxide (4%), and other gases (2%)

The Path of Air 1. Nose & mouth – Mucus moistens air – Hair traps particles 2. Pharynx (throat) – Shared with digestive system – Connects nose & mouth 3. Trachea (windpipe) – Where coughs generate – Food in this area cause choking 4. Bronchi – Large air tubes inside lungs 5. Lung Table Talk: What is the purpose of a sneeze?

Inside the Lungs Gas Exchange alveoli Table Talk: An adult’s lungs contain about 300 million alveoli! How does this help oxygen/carbon dioxide exchange?

How You Breathe 1. You inhale 2. The rib muscles contract 3. The chest wall lifts upward & outward 4. At the same time the diaphragm contracts and moves outward Diaphragm = a large, dome shaped muscle at the base of the lungs

How you speak Vocal Chords • As air moves out of your lungs, muscles make the vocal chords contract, narrowing the opening • This creates a vibration, which is your voice Chords during breathing Chords during speaking See Brain. Pop – “Respiratory System” end

Starter: April 17 th • Explain the respiratory system in 1 sentence.

A Breath of Fresh Air Pg. 579 Problem: Materials: Procedure: [paraphrase 1 -6] 1. 2. 3. 4. 5. 6. Analyze: #1 -4 More to Explore:

Draw a representation of the circulatory and respiratory system.