Homeostasis and Skin Function in Temperature Regulation

The video explains homeostasis, focusing on temperature regulation. It describes how the body maintains a stable internal environment, particularly keeping temperature close to 37°C. The skin plays a crucial role, using mechanisms like vasodilation, vasoconstriction, sweating, and goosebumps to regulate heat. Shivering generates heat when cold. The process is controlled by negative feedback, ensuring balance.

What is the primary example of homeostasis discussed in the video?

• Water balance

• Oxygen level regulation

• Temperature regulation

• Blood sugar regulation

Why is it crucial to maintain body temperature close to 37 degrees Celsius?

• To maintain blood pressure

• To regulate heart rate

• To ensure enzymes function properly

• To prevent dehydration

What happens if the body temperature goes higher than 40 degrees Celsius?

• Increased metabolic rate

• Enzymes stop working

• Improved blood circulation

• Hypothermia

Which system coordinates the body's response to temperature changes?

• Respiratory system

• Endocrine system

• Digestive system

• Central nervous system

What is the term for the opening of blood vessels near the skin's surface to release heat?

• Homeostasis

• Thermoregulation

• Vasodilation

• Vasoconstriction

What happens to blood vessels during vasoconstriction?

• They close to retain heat

• They decrease blood pressure

• They open up to release heat

• They increase blood flow

How does sweating help cool the body?

• By evaporating and using body heat

• By trapping air

• By releasing cold water

• By increasing blood flow

What is the function of goosebumps in temperature regulation?

• To release sweat

• To increase blood flow

• To decrease body temperature

• To trap a layer of air for insulation

What generates extra heat when you start to shiver?

• Increased blood flow

• Muscle contractions and respiration

• Hair follicles

• Sweat evaporation

What is the term for the process that brings the body temperature back to normal if it deviates too much?

• Positive feedback

• Negative feedback

• Thermoregulation

• Homeostasis