Chapter 10: The Pulmonary System Waggy Anatomy & Physiology Chapter 10: The Pulmonary System Waggy

Key Concepts Functions of the Pulmonary System Follow the flow of air through the Upper Respiratory system Follow the flow of air through the Lower Respiratory system Muscles used to breathe Respiratory control Disorders of the pulmonary system

Functions of the Pulmonary System

The respiratory system is divided into 1. upper respiratory system, 2. lower respiratory system,

The Upper Respiratory System Nasal hairs: Mucous secretions Nasal cavity opens into nasopharynx

The nasopharynx is shared by digestive and respiratory systems Extends from nose to esophagus & has 3 sections: 1. Nasopharynx: 2. Oropharynx: 3. Laryngopharynx:

From the pharynx air enters the larynx: During swallowing:

Sound Production As air passes through the glottis it vibrates vocal folds & produces sound waves

The Lower Respiratory System From the upper respiratory system, air enters the trachea (windpipe)

The Primary bronchi begins to branch to form the Bronchial Tree

The Bronchial Tree

Left and right lungs The root The base

The Right Lung- Has 3 lobes: The Left Lung- Has 2 lobes:

The lobes of the lungs split into Pulmonary Lobules,

Each lobule receives an arteriole from the pulmonary circuit and a venule that return to the heart

The Respiratory Cycle Consists of: 1. inspiration 2. Expiration Tidal Volume:

Muscles of Inhalation Diaphragm: External intracostal muscles:

Muscles of Active Exhalation

Respiratory Centers of the Brain Have both voluntary and involuntary components:

Diseases of the Pulmonary System Respiratory Distress Pneumonia Bronchitis:

Asthma: Pulmonary Embolism: SIDS: Apnea:

Laryngeal Spasm: Sneezing & coughing: Pneumothorax: Atelectasis:

The Effects of Aging Elastic tissues deteriorate: Arthritic changes: Emphysema:

The Respiratory Defense System Goblet cells and mucous glands: Cilia: Filtration:

The End