Regular physical exercise is a great way to improve your ove

Regular physical exercise is a great way to improve your overall well being. Exercise controls weight, improves mood, boosts your energy and metabolism, improves sex life and promotes good sleep. The physical activity is usually accompanied by increase in body temperature and sweating. What is the reason for the increase in the body temperature? Explain the relationship between sweating and body temperature and the significance of this feedback. What type of feedback system? identify all components of the feedback system.

Solution

What is the reason for the increase in the body temperature?

For working muscles need energy, which they obtain by burning fuels, like fats and carbohydrates by metabolic reactions leading to the production of heat. As the muscles warm up during a workout, the circulating blood is also warmed, leading to a rise in core temperature. Depending upon the amount of work the muscles perform, heat is generated. The more strenuous the workout, the more heat is produced.

Explain the relationship between sweating and body temperature and the significance of this feedback. The hypothalamus contains key temperature sensors. Sweating begins at a skin temperature of 37°C and increases as the skin temperature increases above this value. However if the skin temperature drops below 37°C many feedback responses are initiated to conserve the heat like:

What type of feedback system?

Like all homeostatic mechanisms thermoregulation also uses negative feedback to maintain a constant set point i.e. value; here in this case it is 37⁰ C. So whenever a change occurs in a system, this causes an automatically corrective mechanism to start, which leads to the reversal of the original change and bringing the system back towards the normal set point.

Identify all components of the feedback system.

The components of the feedback system are:

Thermoregulatory centre: in the hypothalamus. (Monitor the temperature of the blood)

Receptors in the skin (monitor the external temperature).