ANATOMY

Detailed explanation-1: -The urine consists of 95% water, 2.5 % urea and 2.5% other waste products. Urea is the major excretory product in humans. Extra salts are removed along with water as sweat.

Detailed explanation-2: -Four waste products dissolved in the urine. urea, uric acid, creatinine, mineral salts.

Detailed explanation-3: -Urea, together with water and other waste substances, forms the urine as it passes through the nephrons and down the renal tubules of the kidney.

Detailed explanation-4: -The process of excretion is called urination and it is excreted through the urethra. Urine primarily consists of water (95%), including organic solute like urea (2.5%), and other wastes (2.5%) such as enzymes, hormones, fatty acids etc. Hence the statement is incorrect.

Detailed explanation-5: -Urine is about 95% water and 5% waste products. Nitrogenous wastes excreted in urine include urea, creatinine, ammonia, and uric acid. Ions such as sodium, potassium, hydrogen, and calcium are also excreted.