Organs of the Circulatory System

The four primary organs that make up the human circulatory system each perform a unique function. The essential organs of the circulatory system are: Heart, Blood, Blood Vessels, Lymphatic system

1. Heart

The human heart is a primary organ in the circulatory system. The human heart is placed in the front of your chest. It sits slightly beyond and to the left of your sternum (breastbone).  the heart is a muscular organ. It is surrounded by the pericardium and is located in the thoracic region with a slight leftward tilt. The four chambers of the human heart are divided into two upper chambers termed atria (plural: atrium) and two lower chambers known as ventricles.

Deoxygenated blood is collected by the heart, recycled through the lungs, and then given to the body as oxygenated blood. As per Gray’s Anatomy, the heart measures 12 cm in length, 8.5 cm in width, and 6 cm in thickness. Additionally, the average weight of the heart is 230-280 g for women and 280-340 g for men.

2. Blood

Blood is the fluid connective tissue of the body and is an essential component of the circulatory system. Its major function is to transport nutrients, hormones, minerals, and other vital substances to various bodily areas. Blood travels via a specific network of passageways known as blood vessels. The heart is the organ responsible for pumping blood to various body parts. Human blood is made up of blood cells, blood plasma, proteins, and other mineral components like sodium, potassium, and calcium.

Plasma, which makes up 90% of the fluid portion of the blood, is what makes up blood The solid component of blood is made up of platelets, white blood cells, and red blood cells.

The circulatory system is a network of organs that permit the circulation of blood. The circulatory system’s other name is the Cardiovascular system or the vascular system. The primary function of the circulatory system is to transport blood to each part of the body. It is necessary because it carries nutrients, oxygen, carbon dioxide, hormones, and blood cells that are necessary for the hydration and growth of each organ’s cell population.

The Blood circulatory systems are many of the most important processes of the body because they deliver required amounts of oxygen in every portion of the body. The arteries transport the oxygenated blood from the heart to the body parts. Oxygen is provided to the body through diffusion and the blood becomes deoxygenated. This deoxygenated blood is carried return to the heart for oxygenation. This process known as blood circulation occurs continuously in all vertebrates.
 

Biology is part of many competitive exams SSC CGL, UPSC, SSC CPO, and Railways. We have written depth notes on the circulatory System To help you understand the Human Circulatory System in a much better way. To know more about Circulatory System which is mentioned below.