Sweating is the main mechanism of cooling in large-hoofed mammals and in primates including humans. Sweat glands are exocrine glands that release water and solutes through pores from the skin’s surface. Evaporation of water by sweat cools the skin. Humans have a dense array of sweat glands than other primates. A thick coat of hair slows evaporative cooling and insulates the body, thus reducing the heat lost by convection. Humans have sparse body hair that helps in more sweating.

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Chapter 40, Problem 14SQ

Summary Introduction

Introduction: Sweating is the main mechanism of cooling in large-hoofed mammals and in primates including humans. Sweat glands are exocrine glands that release water and solutes through pores from the skin’s surface. Evaporation of water by sweat cools the skin. Humans have a dense array of sweat glands than other primates. A thick coat of hair slows evaporative cooling and insulates the body, thus reducing the heat lost by convection. Humans have sparse body hair that helps in more sweating.

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