Blood, Heart, and Circulation:Comprehensive Guide

Blood, Heart, and Circulation: Complete Guide

Introduction to the Circulatory System

The circulatory system, consisting of the heart, blood, and blood vessels, is responsible for transporting oxygen, nutrients, and waste throughout the body.

Frequently Asked Questions (FAQs)

Blood

What is blood made of?

Blood consists of plasma (55%), red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes).

What is the function of red blood cells?

Red blood cells carry oxygen from the lungs to tissues and transport carbon dioxide back to the lungs.

What causes anemia?

Anemia occurs due to low red blood cells or hemoglobin, caused by iron deficiency, vitamin B12 deficiency, or chronic diseases.

Heart

How does the heart work?

The heart pumps blood through four chambers (two atria and two ventricles) in a rhythmic cycle of contraction (systole) and relaxation (diastole).

What are common heart diseases?

Common heart diseases include coronary artery disease, heart failure, arrhythmias, and valvular heart disease.

Circulation

What are the types of blood vessels?

Blood vessels include arteries (carry oxygenated blood), veins (carry deoxygenated blood), and capillaries (exchange nutrients and waste).

What is hypertension?

Hypertension (high blood pressure) occurs when blood exerts excessive force on artery walls, increasing heart disease risk.

Prevention and Treatment

Maintaining a healthy diet, regular exercise, and avoiding smoking can improve cardiovascular health.

 

Written by:Suresh Kumar Patel

Medically Reviewed by: Dr. XYZ (MBBS, MD)

Last updated: 9 जून 2025

Disclaimer: This article is for informational purposes only. Always consult a qualified doctor before making medical decisions.