blood composition and its components- short note for exam
Blood Composition:
Blood constitutes approximately 7% of the total weight of the human body.
Its pH value is nearly 7.4, making it slightly basic.
An average adult has around 5-6 liters of blood.
Components of Blood
Plasma: The liquid part of blood, composed mainly of water, electrolytes, proteins, hormones, and waste products.
Blood Corpuscles (Formed Elements):
Red Blood Cells (RBCs): Biconcave cells without a nucleus. They contain hemoglobin and transport oxygen to tissues and organs.
White Blood Cells (WBCs): Colorless cells that play a crucial role in immunity and defense mechanisms.
Granulocytes: Leukocytes with granules in their cytoplasm.
Eosinophils: Combat infections in parasites and are involved in allergy and asthma responses.
Basophils: Release histamine and play a role in inflammation and bronchoconstriction.
Agranulocytes: Leukocytes without granules.
Lymphocytes: Key players in adaptive immunity.
Monocytes: Engage in phagocytosis and immune response.
Platelets (Thrombocytes): Fragments involved in blood clotting.