Mind Stretcher – 1/19/16 Put the following images in order from smallest to largest. Add whether each is a tissue, cell, organ system or organ too! A D.

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The Respiratory System.

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The Respiratory System

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Presentation transcript:

Mind Stretcher – 1/19/16 Put the following images in order from smallest to largest. Add whether each is a tissue, cell, organ system or organ too! A D C B

Answer: B- cell, C-tissue, D- organ, A- system

Mind Stretcher 1/20/16 What are two functions of the respiratory system? 1. ______________________________ 2. ______________________________

Mind Stretcher- Answer To take in oxygen To eliminate waste in the form of carbon dioxide

Human Body: Respiratory System  Parts of the respiratory system include:  Larynx (vocal box)  Trachea  Bronchi  Bronchioles  Alveoli

Moving Air in and Out During inhalation the diaphragm and rib muscles contract. During exhalation, these muscles relax. The diaphragm pushes upwards.

Alveoli  The alveoli are moist, thin-walled pockets which are the site of gas exchange.  This is where the oxygen enters the bloodstream and the carbon dioxide leaves!

Oxygen is essential to life. We use the oxygen we breathe and the food we eat to produce energy. Physical activity increases our need for energy; increasing the use of oxygen and nutrients. The body can store some of the things it needs to function. However, oxygen cannot be stored for more than a few minutes at a time. At rest the blood holds about a quart of dissolved oxygen, but it is constantly being used by the cells to produce energy during respiration. The respiratory system must work all of the time to supply enough oxygen to the body.

Ted Ed- How does breathing work?

Ted Ed- What do the lungs do?

Directions: Read Ch (starts on p. 620 in book) AFTER reading…complete Directed Reading provided Label the respiratory system on the back of the paper Turn this sheet in to Mrs. Wise ASAP Study your notes, work on the study guide on the back of your learning plan, etc.