BIOMOLECULES AND ENZYMES

BIOLOGY

HORMONES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An athlete can run for two hours in 35oC if the air is dry without overheating, but not in humid conditions. Why? Select all that apply.
A
Sweat is not produced in humid conditions
B
Sweat is not produced in dry conditions
C
Heat is lost more effectively through sweating than radiation
D
Sweat is produced, but not evaporated in humid conditions
E
Sweat is produced, but not evaporated in dry conditions
Explanation: 

Detailed explanation-1: -How does the air temperature affect the sweat level? As the temperature increased so did the sweat level, while as the temperature decreased the sweat level also decreased. B. The ability to maintain a steady internal temperature is called thermoregulation.

Detailed explanation-2: -Heat production is a function of metabolism. Most of the heat produced in the body is generated in the liver, brain, heart, and skeletal muscles during exercise.

Detailed explanation-3: -If your body needs to warm up, these mechanisms include: Vasoconstriction: The blood vessels under your skin become narrower. This decreases blood flow to your skin, retaining heat near the warm inner body. Thermogenesis: Your body’s muscles, organs, and brain produce heat in various ways.

Detailed explanation-4: -You might notice that in hot weather, you only produce small volumes of urine as the body is fighting to conserve water. If water is in excess, ADH levels are reduced limiting the amount of water resorbed back into the blood but increasing the volume eliminated in the urine.

There is 1 question to complete.