Respiratory System

Function of System

-Pulmonary ventilation and external respiration allows internal respiration

-Exchange of gas from the atmosphere to the lungs allows for exchange of gas from capillaries to cells

Organs in system

Nose, pharynx, larynx, trachea, bronchi, lungs, and respiratory muscles

Nose Function

Purify/warm/moisten air

Where is the Naval Cavity

Nose

Nasal Cavity Structure

Lots of capillaries

Nasal Cavity Function

Warms Air

Where is the conchae?

nose

Structure of Conchae

Large Lumps

Function of conchae

Increase surface area of cavity

Function of mucous membrane

Moistens air and traps bacteria

Where is the Mucous Membrane

Nose

Structure of Mucous Membrane

Moist epithelial tissue

What’s another word for pharynx

throat

Pharynx function

passage for food and air

Where is the nasopharynx

Nose

Structure of nasopharynx

Nose

Oropharynx

Mouth

Larngopharynx

Larynx

Tonsil function

protects from infection

Larynx. (Voice box) function

Routes air and food - making sure food doesn’t’ go into lungs

Hyaline cartilage (hard) function

Protection

Epiglottis structure

Elastic cartilage

Epiglottis function

Closes to let food into esophagus

Trachea function

Tube to lungs

cilla function

Move pathogens away from lungs and towards stomach so they can be killed by stomach acid

Bronchial structure

Branch tree

Bronchi function

Carrying air into the lungs to filter warm and moist in

aveoli and capillaries function

A gas exchange

Function of lungs

Hold air

Structure of superior middle inferior lobes

Left lung has cardiac notch

Respiratory muscles function

Change the volume of lungs

Diaphragm function

Flattens and contracts to increase volume of chest cavity

Small muscles between ribs, intercostals function

Contracts to pull ribs together and expand chest cavity

Tidal volume

Amount of air, exhale, or inhaled in a normal breath

Expiratory reserve volume

Amount of air that can be exhaled forcefully

Inspiratory capacity

The total amount of air that can enter the lungs

Respiratory reserve volume

Amount of air that can be inhaled forcefully after a normal inhale

Vital capacity

The total amount of air that can be forcefully, inhaled and exhale

Residual volume

Cannot be exiled voluntarily