Respiratory System

Respiratory System

Obtain oxygen and remove carbon dioxide Regulates water and air temp Produce vocal sounds Regulates blood pH level

Diaphragm

Large muscle in your chest cavity that contracts and relaxes

Acts like a vacuum, pulls air in and pushes it out

Breathing Mechanisms

Inspiration Process of inhaling

and breathing in air Diaphragm

contracts, causing air to flow into lungs

Breathing Mechanisms

Expiration Process of exhaling

or breathing out air Diaphragm relaxes,

forcing air out of lungs

Organs of Respiratory System

Nose, Nasal Cavity

Pharynx

Larynx

Trachea

Bronchial Tree

Lungs

Nose and Nasal Cavity

Hallowed cavity that allows air to enter/leave

Prevents large particles to enter

Composed of bones Nasal Septum and

Nasal Conchae

Sinuses

Air-filled space within the facial bones of the skull

Mucous lined, helps reduce weight of the skull and affects quality of voice

Pharynx

Aka the throat, passage way for food and for air

Also produces speech sounds

Larynx

Enlargement of muscles and cartilage at the top of the trachea.

Conducts air in and out, prevents foreign objects from entering

Also houses vocal cords

Larynx

Trachea

Windpipe, extends anterior to esophagus toward the bronchi and lungs

Bronchial Tree

Branched airways leading from trachea to air sacs in lungs

Lead to Alveolar Ducts and Alveolar Sacs

Alveolar

Sac like bulbs at the end of brachial branch

Surrounded by blood capillary networks

Gas Diffusion

O2 diffuse out to the capillaries, CO2 diffuse into the alveoli

Flow from High to Low concentrations

Factors that Affect Breathing

Emotions and physical activity can alter normal breathing patterns

Hyperventilation: Rapid and deep breathing, lowers blood CO2 levels