The Amazing Circulatory System

Heart Chambers

• The left ventricle and right ventricle are responsible for pumping blood out of the heart.

Function of the Circulatory System

• Transports oxygen, nutrients, hormones, and waste products throughout the body.
• Maintains homeostasis by regulating body temperature and pH levels.

Role of Arteries

• Arteries carry oxygen-rich blood away from the heart to the body tissues.
• They are muscular and elastic to withstand high pressure from the heart's pumping action.

Blood Oxygen Delivery Process

• After delivering oxygen to cells, blood collects carbon dioxide and other waste products.
• This deoxygenated blood returns to the heart to be re-oxygenated in the lungs.

Blood Flow Direction

• One-way valves within the heart and veins prevent backflow, ensuring blood flows in only one direction.

Non-function of the Circulatory System

• Providing mechanical support to the body is NOT a function of the circulatory system.

Purpose of Blood Vessels

• Blood vessels facilitate the transport of blood throughout the body.
• They include arteries, veins, and capillaries, each serving specific functions.

Order of Blood Flow

• The correct order is: right atrium → right ventricle → lungs → left atrium → left ventricle → body.

Bottom Chambers of the Heart

• The two bottom chambers of the heart are called ventricles.

Interventricular Septum Purpose

• The interventricular septum separates the left and right ventricles, preventing the mixing of oxygen-rich and deoxygenated blood.