Mind Stretcher – 1/30/17 B A D C

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Presentation transcript:

Mind Stretcher – 1/30/17 B A D C Put the following images in order from smallest to largest. Label each as a tissue, cell, organ system or organ! B A D C

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

Mind Stretcher 1/30/17 What is the function of the respiratory system? Name at least two organs in this system: To take in oxygen & eliminate waste in the form of carbon dioxide Lungs, nose, trachea (windpipe), bronchi, bronchioles, alveoli

Mind Stretcher- Answer

Human Body: Respiratory System Organs include: Larynx (vocal box) Trachea Bronchi Bronchioles Lungs Alveoli

Moving Air in and Out During inhalation the diaphragm and rib muscles contract making space for lungs to fill with O2. During exhalation, these muscles relax. The diaphragm pushes upwards & helps push CO2 out.

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

Respiratory System Info: Oxygen is essential to life. We use the oxygen we breathe and the food we eat to produce energy through CELLULAR RESPIRATION. 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? https://youtu.be/Kl4cU9sG_08

Directions Today: 1st: Turn in completed Heart Rate Lab 2nd: Finish Directed reading HW 23-4 (Bring to me when finished to check you off) 3rd: Pick up & complete “How the Respiratory System Works” (front & back) DUE WEDNESDAY! Extension Group: Build model of lungs with supplies given; You may research using device or iPads

Ted Ed- What do the lungs do?