AP BIOLOGY

ANIMAL PHYSIOLOGY

EXCRETION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following may result in a drop in water content of the blood?
A
Sleeping
B
Exercise
C
A cold day
D
Drinking
Explanation: 

Detailed explanation-1: -If water and electrolyte losses continue, blood pressure can fall dangerously low and result in shock and severe damage to many internal organs, such as the kidneys, liver, and brain.

Detailed explanation-2: -Sweating. You can also become dehydrated if you sweat excessively after a fever, exercise, or carrying out heavy, manual work in hot conditions. In these situations, it’s important to drink regularly to replace lost fluids.

Detailed explanation-3: -During exercise the body cools itself by sweating but this ultimately results in a loss of body fluid which, if not replaced, can lead to dehydration. Sweat production (fluid loss) increases with increasing temperature and humidity, as well as with an increase in exercise intensity.

Detailed explanation-4: -Water is essential to maintain blood volume, regulate body temperature and allow muscle contractions to take place. During exercise, the main way the body maintains optimal body temperature is by sweating. Heat is removed from the body when beads of sweat on the skin evaporate, resulting in a loss of body fluid.

There is 1 question to complete.