Respiratory System

Front 1

Nares

Back 1

*opening of the nose where respiration begins.
*the nasal cavity is lined with cilia, mucus membranes and blood capillaries.
*Air moves to the pharnyx or throat
* these cillia, musus and nostril hairs sweep out particles, trap pathogens and filthers out.

Front 2

Lungs

Back 2

*spongy tissues lined with aveoli and blood capillaries.
* Aveoli sacs are at the end of the branchial tree and this is where the gas exchange occurs.
*Oxygen in the air, moves from the aveoli to the capillaries and the carbondioxide from the capillaries moves to the aveoli

Front 3

Henry's law

Back 3

*The process of respiration follows Henry's law: there should be an equilibrium concentration of oxygen dissolved in the blood.

Front 4

Thermoregulation

Back 4

*Breathing helps to regulate body temperature. We lose heat when we breath because we breath out warm moist air.

Front 5

Diaphragm

Back 5

*is a thin dom shaped muscles with tendons. which separates the abdominal cavity from the chest cavity
*muscle that pulls downward when contracting, which increases chest volume, decreases pressure, and sucks air into lungs.

Front 6

Rib cage

Back 6

* protects the lungs
* expands during breathe intake
*

Front 7

Intrapulmonary and Interpleural pressure

Back 7

* Intrapulmornary: pressure within lung
*interpleural: pressure outside of lung.
intrapleural pressure is always less than the intrapulmonary pressure.

* The intrapulmonary pressure is subatmospheric during inspiration and greater than the atmospheric pressure during expiration.