Controlling body temp

• The brain monitors the temperature of the body.
• The body responds if the body temperature is too high or too low.
• Normal human body temperature is 37 degrees Celsius.
• The thermo regulatory center in the brain contains receptors which are sensitive to the temperature of the blood and the skin.
• Sweat glands will sweat onto the surface of the skin when the body temperature gets too high, and this sweat evaporates, taking energy from the body and cooling the body down.
• The body can also cool itself down by flushing heat under the surface of the skin.
• The thermo regulatory center also receives electrical impulses from sensory neurons in the skin.
• If the body temperature gets too high, sweat glands will sweat onto the surface of the skin, and this sweat evaporates, taking energy from the body and cooling the body down.
• If the body temperature drops too low, blood vessels supplying the capillaries constrict, meaning they become narrower, and less blood flows through the capillaries.
• Another way the body responds when the body temperature drops too low is to shiver, where skeletal muscles contract to generate energy, increasing the rate of respiration and releasing heat which warms the body.
• If the body temperature falls too low, the body also stops sweating.
• Thermoregulation is the control of our internal body temperature.
• The part of our brain that controls the process of thermoregulation is the hypothalamus.
• The mechanisms involved in warming us up and cooling us down include constricting blood vessels near the surface of the skin, contracting erector muscles, and shivering.
• Homeostasis refers to the process of maintaining a stable internal environment.
• One of the most important things our body has to regulate is our temperature, which has to be kept around 37 degrees Celsius all the time.
• The thermoregulatory sensor, a part of the hypothalamus within our brain, acts as a thermostat for our body.
• Receptors throughout our body, particularly in the skin and blood vessels, constantly send information about our temperature to the thermoregulatory sensor, enabling the brain to determine if we're too hot or too cold.
• To warm up, we conserve the heat that we have and generate more by constricting blood vessels near the surface of the skin, contracting erector muscles, and shivering.
• To cool down, we do the opposite by relaxing erector muscles, allowing hairs to fall flat and blood vessels to expand, producing sweat, and evaporating it.