When the outer air temperature is higher than body temperature, which of the following combination of control mechanisms is the most likely to occur?
Correct answer: D. D
- A. A
- B. B
- C. C
- D. D
Explanation
When the outer air temperature is higher than body temperature, the body's thermoregulatory response shifts to cooling mechanisms such as sweating. Sweat glands release moisture onto the skin's surface, where it evaporates, dissipating heat. Additionally, blood vessels dilate to enhance heat loss through radiation and convection, while shivering and vasoconstriction are suppressed to prevent further heat retention.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
Practise Homeostasis
698 free Homeostasis MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Thermoregulation questions
Which of the following would increase the rate of heat exchange between an animal and its environment?
What type of heat exchange is promoted by vasodilation
The animal that is CORRECTLY categorised on the basis of the production of metabolic heatby its body is
If body is overheated, the body temperature can be regulated by
Homeostasis thermostat is present in the brain:
The mechanism by which organisms stability of cellular movement is known as: