Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Warm-Up 1. T/F The liquid portion of blood is called plasma 2. What are the three types of blood vessels? 3. Blood flows from the right ventricle to the ___________ Respiratory System What does it do? Your Breathing 1. Have a partner count the number of breaths you take in 15 seconds. Multiply that number by 4 for the number of breaths per minute. 2. Now, take a deep breath and hold it for as long as you can. Have your partner record your time. Your Breathing 1. Why are there differences in breathing rates among members of the class? 2. What factors might affect how long you could hold your breath? 3. A child having a tantrum declares she is going to hold her breath “until I turn blue!” Do you think this is possible? Function • Brings oxygen into the blood and tissues and carbon dioxide out to the air. Nasal Passageway • First structure of the respiratory system. • Mucus moistens the air and traps dust. • Cilia sweep dust so that it is swallowed or spit out. Structures • Pharynx – Passageway for air and food • Larynx – Vocal cords • Trachea – Passageway for air only Structures • Bronchi – Passageway from trachea to lung • Alveoli – Air sacs in lungs that are used for gas exchange Gas Exchange • There are 150 million alveoli in each healthy lung. • Oxygen diffuses from alveoli into blood cells • Carbon Dioxide diffuses out of blood cells and into avleoli Lung Capacity • What do you think Lung Capacity is? • What factors do you think affect Lung Capacity? Lung Capacity • Tidal Lung Capacity – The amount of air moved in and out of your lungs in one normal breath • Vital Lung Capacity – The amount of air exhaled after one DEEP breath • Experimental Value – Actually measure how much air you exhale • Calculated Value – Calculate how much air you should be able to exhale based on body surface area and age Breathing • The diaphragm is a muscle at the bottom of the chest cavity that controls breathing. • The diaphragm contracts when a person inhales. • When using force to blow out, other muscles are used. Let’s Review • What is the first structure of the Respiratory System? Nasal Passage Alveoli are air sacs located in • The _________ Lungs where gas exchange the __________ occurs Pharynx is a passageway for • The _________ both food and air • List the following structures in order: – Bronchi, Larynx, Nasal Passage, Trachea, Alveoli, Pharynx