THE RESPIRATORY SYSTEM Ch 16 Lesson 1 System...PARTS OF THE RESPIRATORY SYSTEM 1. Pharynx: a tube-like passageway at the top of the throat that receives air, food, and liquids from

THE RESPIRATORY

SYSTEM

Ch 16 Lesson 1

February 5, 2018

What do you think?

1. Breathing and respiration are the same.

2. Lungs are the only part of the body that

use oxygen.

Functions of the RESPIRATORY

System

1. Taking in oxygen

2. Eliminating

carbon dioxide

What do you think?

1. Breathing and respiration are the same.

Breathing is the movement of air in and out of the lungs. Cellular respiration is a series of reactions that converts energy in food molecules to usable energy for cells.

2. Lungs are the only part of the body that use oxygen.

All cells throughout the body need oxygen.

PARTS OF THE RESPIRATORY

SYSTEM

1. Pharynx: a tube-like passageway at the top of the throat that receives air, food, and

liquids from the mouth or nose.

2. Epiglottis: a flap of tissue at the lower end of the pharynx that keeps food and liquid

from entering the rest of the respiratory system.

3. Larynx: triangle-shaped area connected to the pharynx; voice box

4. Trachea: tube connected to the larynx and held open by C-shaped rings of cartilage

5. Bronchi: two tubes that branch off of the trachea and lead to the lungs

6. Lungs: main organs of the respiratory system

7. Alveoli: microscopic sacs within the lungs where gas exchange occurs

8. Diaphragm: large muscle below the lungs that contracts and relaxes as you breathe

Cilia: short, hair-like structures that can move a cell or move molecules away from a cell.

nosemouth

pharynx

larynx

trachea

lungsbronchi

diaphragm

kahoot

lung

alveoli

Red blood cells

Carbon dioxide

Oxygen

Blood vessel (capillary)