2.46: Describe the Structure of the Thorax, Including the Ribs, Intercostal Muscles, Diaphragm, Trachea, Bronchi, Bronchioles, Alveoli and Pleural Membrane

THORAX: Part of body between Neck and Abdomen

DIAGRAM:

                    

Diagram showing the Structure of Thorax on Human Body

STRUCTURE OF THORAX:

STRUCTURE	DESCRIPTION
RIBS	Bone structure that protects internal organs including the Lungs
INTERCOSTAL MUSCLE	Muscles between the Ribs that move ribcage during inhalation and exhalation
DIAPHRAGM	Sheet of muscle at bottom of Thorax that changes the thoracic volume during inhalation and exhalation
TRACHEA	Windpipe that connects the Mouth and Nose to the Lungs
BRONCHI	Thick tubes that divides into two Bronchi inside Lungs - one Bronchus for each Lung
BRONCHIOLES	Bronchi will split to form thinner tubes called Bronchioles that are connected to Alveoli
ALVEOLI	Tiny air sacs where gas exchange occurs
PLEURAL MEMBRANE	Thin, moist membrane lining the outside of Lungs for lubrication to reduce friction, and to stick outside of Lungs to chest cavity for Lung to follow chest movement