Thermoregulation: How the Body Controls Temperature

The video explains thermoregulation, a process maintaining the body's core temperature at 37°C, crucial for enzyme function and homeostasis. It details how the brain's thermoregulatory center and skin receptors monitor temperature changes. When the body overheats, responses like vasodilation and sweating help cool it down. Conversely, when cold, vasoconstriction, reduced sweating, and shivering help conserve and generate heat, ensuring optimal body temperature.

What is the primary function of thermoregulation in the human body?

• To control the body's hydration levels

• To regulate the body's core temperature

• To maintain a constant blood pressure

• To balance the body's pH levels

Which of the following processes occurs when the body is too hot?

• Decreased heart rate

• Increased sweat production

• Vasoconstriction

• Shivering

How does vasodilation help in cooling the body?

• By decreasing blood flow to the skin's surface

• By narrowing blood vessels

• By reducing sweat production

• By increasing blood flow to the skin's surface

What happens to blood vessels during vasoconstriction?

• They become wider

• They become narrower

• They increase blood flow to the skin

• They decrease blood flow to the brain

Which response helps increase body temperature when it is too cold?

• Increased sweat production

• Vasodilation

• Shivering

• Decreased respiration rate