The Respiratory system

Trachea

It is also known as windpipe, it filters the air we inhale and branches into the bronchi.

Lungs

The main organ of the respiratory system.

Pharynx

Tube that connects the mouth to the larynx and esophagus.

Bronchi

Tube that connects the trachea to the lungs.

Larynx

commonly called the voice box, and a connection between the pharynx and trachea

Alveoli

It is the tiny sac like structure present in the lungs which the gaseous exchange takes place.

Diaphragm

Breathing begins with a dome-shaped muscle located at the bottom of the lungs.

Epiglottis

It is a leaf-shaped flap of cartilage located behind the tongue, at the top of the larynx, or voice box.

Respiratory system

This system has a primary organ which is lungs, the function is to take in oxygen and expel carbon dioxide as we breathe.

Right Lung

It has 3 lobes: superior, middle, and inferior and it is the larger of the two lungs.

Left Lung

It has 2 lobes: superior and inferior and it is the smallest of the two lungs.

Inhale

To breathe in, diaphragm flattens

Exhale

To breathe out, diaphragm relaxes

Inspiration

The diaphragm contracts causing the lungs to stretch. This decreases the pressure inside causing air to rush into the lungs, balancing the air pressure and inflating the alveoli.

Expiration

The medula obongata stops sending signals to the intercostal muscles and diaphragm so they stop contracting. This decreases the volume in the lungs so the air pressure increases. This forces carbon dioxide out of the lungs and they deflate.