RESPITORY SYSTEM

By: Chastday Garza

What the Respiratory system does

It's purpose is to bring oxygen into your body

It helps your body get rid of that carbon dioxide.

The passageways purify, humidify, and warm incoming air

What it consist of Ventilation - the exchange

of respiratory gases (O2 and CO2) between the atmosphere and the lungs

External respiration - the exchange of gases between the lungs and the blood

Internal respiration - the exchange of gases between the blood and the systemic tissues

Cellular respiration - the includes the metabolic pathways

What are the main parts? The respiratory

system includes the nose, pharynx, trachea , bronchi and there smaller branches in the lungs

The lungs contain the aveoli, or terminal air sacs

The Nose Nose- Only externally visible

part of the respiratory system Sticky mucus produced by

the mucosa’s gland traps incoming bacteria and other foreign debris

Surrounded by a ring of paranasal sinuses located in the frontal, sphenoid, ethoid and maxillary bones

The Pharynx (throat) Pharynx- a

muscular passageway about 13 cm (5 in) long that vaguely resembles a short length of red garden hose

Connected to the nose

(continuation)

Air enters the nasopharnx, form the nasal captivity and descends through the oropharynx and laryngophary to enter the larynx below

Includes tonsils and adenoid

The Larynx Larynx- voice box, routes

air and food into proper channels and plays a role in speech

Has a spoon-shaped flap of elastic cartilage, the epiglottis

Also has a shield-shaped Thyroid cartage which produces interiorly and is commonly called “Adams apple”

(continuation)

When swallow larynx is pulled upward and the epiglottis tips, forming a lid over the opening

The Trachea Windpipe from the larynx travels

down the length to the level of the fifth thoracic vertebra, in the mid chest

Cilia continuously and in the direction opposite to the incoming air

It is rigid because its walls are reinforced with c-shaped rings of hyaline cartilage

(Continuation)

The rings purpose are to open parts of the rings about the esophagus and allow it to expand when we swallow large pieces or foods

The Primary Bronchi Primary Bronchi- formed

by the division of the trachea

The right primary bronchus is wider, shorter, and straighter than the left

By the time air is reached it is was cleaned , and well humidified

The smaller one is direct routes to the air sacs

The Lungs Lungs- large organs Mediastium which houses the

heart, the great blood vessles, bronchi, esophagus, and other organs

Left lung has two lobes and the right has three

Walls of the alveoli are composed largely of single , thin layer of squamous epithelial cells