Respiratory System
Video Respiration System You will use 3 pages of your journal for this lesson. 1. One page for hand written notes onto a journal page 2. 2 nd page for diagram 3. 3 rd page for chart on function
Functions of the Respiratory System Supply oxygen to the blood Remove carbon dioxide from the blood
Functions of the Respiratory System Breathing the physical process of moving air into and out of the lungs Exchange of gases, specifically oxygen and carbon dioxide
Functions of the Respiratory System Respiration chemical process of releasing energy from glucose in the cells. There are 2 types: Aerobic needs oxygen and releases energy Anaerobic does NOT need oxygen, and releases far less energy
FIND THIS PAGE: FILL IT OUT, BOTH THE DIAGRAM LABELS AND THE CHART WITH STRUCTURE NAME AND FUNCTION AS WE GO THROUGH THE NOTES AT THE END, YOU WILL GLUE THESE PAGES IN SIDE BY SIDE
Structures (Organs) of the Respiratory System Nose - Nasal cavity (1) = air is cleaned, warmed, and moistened Mouth (2) - air enters through the mouth, as well as the nostrils
Throat Structures/organs of the Respiratory System Pharynx (3) = passageway for both food and air
Structures/organs of the Throat - Epiglottis (4) = flap that closes over the larynx. The epiglottis is a flap of tissue. Its main function is to close over the windpipe (trachea) while you're eating to prevent food from entering your airways. larynx (5) - is the top part of the trachea Respiratory System
Structures/organs of the Throat Larynx = air only; vocal chords are attached here. Purpose is to make sound, your voice! Respiratory System Vocal chord video: How the larynx works
Structures/organs of the Respiratory System Trachea (6) Trachea (windpipe) c-shaped rings of cartilage keep it open all the time Function - connects the larynx to the bronchi and allows air to pass through the neck and into the thorax.
Structures/organs of the Respiratory Lungs (7) In the lungs, the oxygen is moved into the bloodstream and carried through the body. System
Structures/Organs of the Respiratory System In the lungs: (8) Bronchi = 2 small branches at end of trachea Their function is to carry air into lungs
Structures/Organs of the Lungs Respiratory System (9) Bronchioles = smaller branches off of bronchi Function - Bronchioles are tiny airways that carry oxygen to alveoli, or air sacs, in the lungs
Organs of the Respiratory Lungs - (10)Alveoli Alveoli = tiny, grapelike sacs at the end of bronchioles; surrounded by capillaries Their function is to allow oxygen and carbon dioxide to move between the lungs and bloodstream System
Organs of the Respiratory Diaphragm (11) (muscle below the lungs that helps air move in and out of the body) System When you breathe in, the diaphragm contracts downward, creating a vacuum that causes a rush of fresh air into the lungs. The opposite occurs with exhalation, where the diaphragm relaxes upwards, pushing on the lungs, allowing them to deflate.
Capillaries (not on your page, write the next few slides on that first note page in your journal) Capillaries are the smallest of the body's blood vessels. They are only one cell thick, and they transfer oxygen and other nutrients from the bloodstream to other tissues in the body; they also collect carbon dioxide waste materials and fluids for return to the veins.
to body cells Gas Exchange in the Lungs Takes place between alveoli and capillaries INHALE oxygen enters body into alveoli into capillaries into blood
CO 2 from body cells Gas Exchange in the Lungs Takes place between alveoli and capillaries EXHALE leaves body into alveoli into capillaries into blood
Quick check!
What is the function of the respiratory system? 1. To provide oxygen & carbon dioxide to the body cells. 2. To provide carbon dioxide to body cells & remove oxygen. 3. To provide oxygen to body cells & remove carbon dioxide. 4. To remove oxygen & carbon dioxide from the body cells.
Where does the exchange of oxygen and carbon dioxide occur? 1. The heart 2. The alveoli 3. The pharynx 4. The body cells
What carries the blood back to the heart after it picks up oxygen from 1. Lungs the alveoli? 2. Aorta 3. Pulmonary artery 4. Pulmonary vein
What is this structure? 1. Diagram 2. Diagonal 3. Diaphoresis 4. Diaphragm
What causes you to exhale? 1. Your lungs contract to squeeze the air out. 2. Your diaphragm moves up, pushing air out of the lungs. 3. Your ribs squeeze the air out of your lungs. 4. Your diaphragm moves down, letting air escape from your lungs.
Notes Your notes should be complete Glue them in to your journal now Then make sure you have a computer and the HW assignment, Body Smart Scavenger Hunt we can start on it now.