Today in my article I will give you a clear picture of blood and its components. The explanation is going to be so simple that you will understand easily and quickly.
What is Blood?
Blood is a bodily fluid that flows throughout the body. It connects organs and tissues by transporting oxygen, nutrients, hormones, and waste products.
In 1628 William Harvey described the circulation of blood in the body. William Harvey showed that blood is pumped by the heart and flows throughout the body in a closed system.
What is Hematology?
The study of blood is called hematology. Hematology is a branch that involves the study of blood and its components. Which includes the study of various blood cells, for example– red blood cells, white blood cells, platelets and plasma. Additionally, it also includes diagnosis, treatment and prevention of blood disorders. Hematology also includes the study of the bone marrow, lymph nodes, and spleen, as these are all involved in blood cell production and function.
What is the composition of the blood?
Blood is made up of plasma, red blood cells, white blood cells, and platelets
1) Plasma
Plasma is the liquid portion of blood, which makes up the majority of blood volume. It contains proteins, for example – Albumin, Globulin and Fibrinogen. Plasma contains electrolytes ( sodium and potassium), hormones, nutrients (glucose and amino acids) and waste products. It acts as a fluid medium that transports these substances, along with proteins and other soluble substances, throughout the body.
2) Red Blood Cells (RBCs)
The other name for Red RBCs “Erythrocytes.” Bone marrow produces RBCs through a process called Erythropoiesis. RBCs contain hemoglobin, which is a protein rich in iron.
The lifespan of RBC is about 120 days and normal range of RBCs is 4.2 to 6.2 million (cells per microliter).
RBCs carry oxygen from the lungs to cells throughout the body. It also carries carbon dioxide, a waste product of cellular respiration, back to the lungs for exhalation.
3) White Blood Cells (WBCs)
The other name for WBCs is “Leukocytes.” Bone marrow produces WBCs and circulate in the blood and lymphatic system.
The normal range of WBCs is between 4000 to 10000 (cells per microliter). The lifespan of WBCS ranges from 6 hours to a few days.
Types of white blood cells:
Neutrophils, Lymphocytes, Monocytes, Eosinophils, and Basophils.
WBCs protects the body against pathogens and other foreign particles. It helps repair damaged tissues after injury or infection.
4) Platelets
The other name for Platelets is Thrombocytes. The normal range of Platelets is between 150,000 to 450,000 (cells per microliter). The lifespan of Platelets ranges from 7 to 10 days. Like RBCs and WBCs, the bone marrow produces platelets.
Platelets are small cell fragments that play an important role in blood clotting and wound healing. Moreover, Platelets play a role in inflammation and immune responses by releasing signaling molecules and interacting with other immune cells.
What are the functions of blood?
- Blood helps regulate body temperature by distributing heat throughout the body. It transfers the excess heat to the skin and dissipates it.
- Blood carries oxygen from the lungs to the cells and carbon dioxide back to the lungs. Moreover, It transports nutrients like glucose, amino acids, and fatty acids from the digestive system to the cells.
- Blood transports hormones from glands to organs and cells, and regulates various bodily functions.
- Blood collects waste products like carbon dioxide (from cellular respiration) and transports them to the lungs, kidneys, and liver for removal from the body.
Why is the color of blood red?
Hemoglobin is a protein found inside the Red Blood Cells (RBCs). It contains a compound called “heme,” which itself contains an iron atom. The iron atom binds with oxygen and this oxygenated iron gives blood its red color.
Why is the percentage of blood in females less than in males?
Since, females have lower iron levels than males and iron is an important component of hemoglobin. This reduces the amount of hemoglobin in females. Normal hemoglobin levels for males typically range from 13.5 to 17.5 grams per deciliter (g/dL), while for females, it’s generally 12.0 to 15.5 g/dL.
Red blood cells are primarily composed of hemoglobin. Red blood cells(RBCs) are the largest component of blood by volume. making up approximately 40-45% of the total blood volume. This results in a lower percentage of blood in females as compared to males.
What happens due to deficiency of blood?
Blood deficiency, especially a low number of healthy red blood cells or insufficient hemoglobin, causes anemia. Anemia is a condition in which the body cannot get enough healthy RBCs to carry oxygen to the tissues.
Types of Anemia:
- Iron deficiency anemia: This is the most common type and occurs when the body does not have enough iron to make adequate hemoglobin.
- Vitamin B12 deficiency anemia: A deficiency of vitamin B12, which is essential for the production of red blood cells, causes anemia.
- Folate deficiency anemia: Similar to B12 deficiency, a lack of folate (vitamin B9) can also cause anemia
- Hemolytic anemia: This occurs when red blood cells are destroyed faster than the body can replace them.
Symptoms of Blood Deficiency (Anemia):
- Fatigue and weakness
- Dizziness and lightheadedness
- Pale skin, cold hands and feet
- Irregular heartbeat
Moreover, a lack of platelets cause excessive bleeding and bruising. Some blood cancers, such as leukemia and lymphoma, can affect blood cell production and lead to a variety of complications.
What are the ways by which we can increase blood and hemoglobin level in our body?
- Include green leafy vegetables in your diet. For example- spinach, lentils, poultry, seafood, and fortified serials.
- Eat foods rich in vitamin C, such as citrus fruits (oranges, strawberries, etc.) and pomegranates, as vitamin C helps the body absorb iron.
- Drinking enough water is important for overall health and also help in the production of red blood cells.
- Regular exercise, helps the body to produce more red blood cells, thereby increasing hemoglobin.
- Stress has a negative effect on many bodily functions, including the production of red blood cells. Exercise, meditation, or spending time in nature can help reduce stress.
- Avoid too much caffeine
I have covered almost everything about blood and its components. If you have any queries regarding this topic or if you want me to write an article on a specific topic then please let me know in the comment box below.
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