Although there is a set homeostatic range for temperature, under normal conditions the human body is constantly fluctuating within the set range. The physiological systems involved in these responses include the integurity system peripheral thermoreceptors on the surface of the skin and piloerector muscles present in the dermal layervascular system contraction of superficial blood vesselshypothalamus thermoreceptor for monitoring blood temperature and also comparator for thermoregulation and the nervous system for sending sensory information to the hypothalamus afferent sensory nerves and from the hypothalamus to the desired muscles efferent motor nerves.
Certain behavioural responses that are usually performed to regain a homeostatic temperature range in the cold could be as simple as putting on a jumper to prevent heat loss through convection, or ingesting a hot meal or beverage, increasing metabolism and production of heat within the body while also warming your core via the digestive system.
Thermoregulation Essay from Monday the 13th January Mark received was Physiological responses that activate in order to regulate core body temperature in a cold environment include shivering to increase muscle movement creating heat as a by-product of the work done by the muscles; erecting hairs on the surface of the skin to create a blanket of hair fibres that traps heat, reducing the amount of body heat lost via the surface of the skin; increasing the rate of cellular metabolism to increase core temperature; and contracting superficial veins near the surface of the skin back towards the centre of the body to reduce the amount of heat lost from the blood stream and the core.
Maintaining the core temperature of the human body is important for many things including basic survival, regulation of enzymes involved in reactions within our body and as a hostile environment used as a defensive mechanism against invading pathogens.
The regulation of core body temperature is a negative feedback mechanism, meaning that any change in core body temperature outside the normal homeostatic range will be accounted for by the body reacting in such a way as to oppose the increase or decrease in temperature.
Outline the thermoregulatory feedback mechanisms required to maintain a constant core body temperature in a COLD environment.
This means that it is never at a constant unchanging body temperature.Bacterial Growth Pattern Factors. Print Reference this. Published: 23rd March, Last Edited: 12th May, Disclaimer: This essay has been submitted by a student.
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