May 13, · The average adult human body is % water, averaging around %. The percentage of water in infants is much higher, typically around % water, dropping to 65% by one year of age. Body composition varies according to gender and fitness level because fatty tissue contains less water than lean tissue. The average adult male is about 60%. Water is of major importance to all living things; in some organisms, up to 90% of their body weight comes from water. Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry , the brain and heart are composed of 73% water, and the .
There can be considerable variation in body water percentage based on a number of factors like age, health, water intake, weight, and sex. In a large study of adults of all ages and both sexes, the adult human body averaged ~65% water. However, this varied substantially by age, sex, and adiposity (amount of fat in body composition). Start studying Chapter Water and Major Minerals. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. Water constitutes what percentage of the adult body's weight? 75%. Rare condition in which body water contents are too high in all body fluid compartments.
Anatomy and Physiology Chaper 3 Cells. STUDY. PLAY. an adult human body consists of about how many cells? 75 trillion. differentiated cell. water molecules move through a selectively permeable membrane toward the solution with more impermeant solution (greater osmotic pressure). only water can pass through membrane, NOT solute. Oxygen is the most abundant element in the human body accounting for approximately 65% of a person's mass. Each water molecule consists of two hydrogen atoms bonded to one oxygen atom, but the mass of each oxygen atom is much higher than the combined mass of the hydrogen. In addition to being a component of water, oxygen is essential for cellular respiration.