GENERAL HISTOLOGY

Detailed explanation-1: -Kidneys. The paired kidneys are often considered the main organs of excretion. The primary function of the kidneys is the elimination of excess water and wastes from the bloodstream by the production of the liquid waste known as urine .

Detailed explanation-2: -Eccrine sweat glands are the most numerous, distributed across nearly the entire body surface area, and responsible for the highest volume of sweat excretion [5]. By contrast, apocrine and apoeccrine glands play a lesser role in overall sweat production as they are limited to specific regions of the body [7–10].

Detailed explanation-3: -The skin eliminates excess water and salts in sweat. The lungs exhale water vapor and carbon dioxide.

Detailed explanation-4: -A kidney is the main excretory organ that filters the blood containing soluble waste material and then eliminates it in the form of urine.

Detailed explanation-5: -Sweat glands in the skin secrete a fluid waste called sweat or perspiration; however, its primary functions are temperature control and pheromone release. Therefore, its role as a part of the excretory system is minimal.