Chapter 19 – Excretory Products And Their Elimination
Excretory Products and Their Elimination is an important chapter in Class 11 Biology that explains how the human body removes metabolic wastes to maintain internal balance. During various metabolic activities, harmful substances such as urea, uric acid, creatinine, carbon dioxide, and excess salts are produced, which must be eliminated to prevent toxicity.
This chapter mainly focuses on the human excretory system, including the kidneys, ureters, urinary bladder, and urethra. It explains the structure and functioning of the nephron, the structural and functional unit of the kidney, and processes such as glomerular filtration, tubular reabsorption, and tubular secretion involved in urine formation.
The chapter also covers micturition, regulation of kidney function (role of ADH), and common disorders like kidney stones, uremia, and renal failure. Understanding this chapter is essential for learning how the body maintains water and ionic balance and is highly important for CBSE board exams and NEET preparation.
Excretory Products and their Elimination NCERT
