Respiratory System Jr. / Sr. Anatomy and Physiology Ms. Walstedt
Functions Brings oxygen from the air into the body and expels carbon dioxide from the body Accomplished with the help of the circulatory system
Upper Respiratory System Consists of the nose, (snout, nostrils, etc) mouth, pharynx, epiglottis and larynx.
Vocabulary Mucous membranes: Lining of respiratory tract that secretes mucous Mucus: Slimy secretion that helps to warm, moisten and filter air
Vocabulary Cont. Cilia:Tiny wave-like hairs that line the nostrils and help to filter air. Pharynx:Shared by the respiratory and digestive systems Epiglottis:Tiny flap that covers the larynx during swallowing
Vocabulary Cont. Larynx:“voice box”, that contains vocal chords that vibrate when air passes through.
Lower Respiratory System Trachea:“Windpipe”….. rings of cartilage keep its shape Bronchi:branches at the bottom of the trachea that are contained in the lungs. Singular: Bronchus
Lower Respiratory System Cont. Bronchial Tree:Describes how branches of the bronchi get continually smaller, like a tree branch
Lower Respiratory Cont. Bronchioles: Smallest branches of the bronchial tree. Alveoli:Grape-like clusters at the ends of the bronchiole. Exchange of gas occurs here
Lower Respiratory Cont. Lungs: Paired organs containing bronchi that are divided into clearly defined lobes.
Lower Respiratory Cont. Diaphragm: A muscle located below the lungs that contracts causing the lungs to fill with air.
Breathing Inhalation: Drawing in of a breath Exhalation: Release of a breath
Breathing Apnea: Not breathing Dyspnea: Difficult breathing