Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
What is Thermoregulation in Cold?
Heat production parallels the increase in O2 uptake, the magnitude of which depends on the muscle mass .engaged in slivering or work and the duration of activity. Shivering alone can produce only a four-fold increase above basal rates of heat production. The increase in O2 uptake during shivering thermo genesis is also accompanied by an increase in cardiac output. This increase is due to increase in stroke volume, which is associated with cold-induced peripheral vasoconstriction. The effect of the mechanisms used to protect against heat loss depends on the body surface area in comparison with body mass. The problems may arise in malnourished subjects who have lost both fat mass, as well as, lean body mass. Cold acclimatization can occur in human subjects but it is minimal. An important modifying factor on the thermoregulatory response to cold is the individual's provision of subcutaneous fat, since fat reduces thermal conductance from the core to the body surfaces. Physical fitness has mixed effects; the fittest individuals show more heat production but at the same time, being lean in structure, they lose heat more quickly. Severe losses of body weight in a cold environment complicate the normal physiological responses to cold. Thus, maintaining an adequate intake in cold environment especially under physically active conditions is important. There is a common belief that cold climatic conditions lead to an increased appetite. The evidence for this conclusion is derived from
Changes in body weight; self reported intakes in cold environment at sea level (SL). However, the reported increase in appetite is also associated with changes in other aspects of subject's environment such as increased activity levels, energy expenditure due to thermo genesis, social isolation and modification in the diet. In animals, increased energy expenditure caused by increased thermo genesis due to cold environment is compensated by increased intakes,
In human subjects, increased energy intake requirements do not always trigger an increase intake and appetite immediately. Humans can adapt over a period of time to a high fat diet to make the food energy dense. Now that we are aware of the concept of thennoregulation, let us look at the dietary patterns and the factors affecting food intake of the people residing in cold conditions.
Echocardiography is a very important tool in diagnosis of cardiovascular diseases and is used virtually in all categories of cardiovascular diseases. There are certain areas where
FEMALE REPRODUCTIVE SYSTEM - In female mammals the female reproductive system characteristically comprises of the ovary, uterus, placenta, vagina and vulva.
DISORDER S OF MALE REPRODUCTIVE SYSTEM (i) Prostatomegaly - Enlargment of prostate gland. It causes difficult & painful micturition. (ii) Impotence - Inability of male
If neurons are exposed to a chemical agent that prevents the NA+ channels from opening, what would happen to the neuron? What would happen if the K+ channels were inhibited? What d
DISORDE R RELATED TO NUTRITION AND DIGESTIVE SYSTEM Malnutrition Malnutrition is improper intake of food. Malnutrion covers both undernutrition and overnutrition. Und
Describe the Neuropsychological Assessment of Infants Neuropsychological Assessment of Infants and Young Children followed by the developmental Concepts Unique to Infants and
Q. Which are the groups of living beings that form the protist kingdom? The protist kingdom includes algae and protozoans. (Two groups of fungi with similar characteristics to
Subtropical rain forests - Ecosystem In regions of fairly high rainfall but less temperature differences between winter and summer and broad-leaved evergreen subtropical biome
discus the protozoan flagellates of less medical importance ,outlining their development stages,normal habitants and morphological characteristics
Determination Reductive hydrolysis of folic acid produces 4-aminobenzoyl glutamic acid which is determined photometrically after diazotization and coupling with N-(1-naphthyl)
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd