14.4. Homeostasis
A subsection of Biology, 0610, through 14. Coordination and response
Listing 10 of 120 questions
For Examiner's Use Name the term that is used to describe the maintenance of a constant internal environment. State two advantages to a mammal of maintaining a constant body temperature. 1. 2. shows changes in a person’s body temperature before, during and after a period of exercise. exercise begins ends time body temperature / °C Using information from , state the normal body temperature of this person. ºC. Explain what is meant by the term vasodilation. On , label with an X a point when vasodilation is having an effect on the person’s body temperature. For Examiner's Use Explain how vasodilation affects body temperature.
0610_s10_qp_22
THEORY
2010
Paper 2, Variant 2
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Homeostasis is the maintenance of a constant internal environment. Human skin is involved in the maintenance of a constant internal body temperature. Skin is an organ. State why the skin is an organ. State the name of the organ that coordinates the control of body temperature. shows a diagram of a section through human skin. F E D A B C State the names of structures A, B and C in . A B C Structure D is a shunt vessel and E is an arteriole. Describe how these blood vessels are involved in maintaining a constant internal body temperature in a cold environment. Energy is used to maintain body temperature. State three other uses of energy in humans.
0610_s20_qp_42
THEORY
2020
Paper 4, Variant 2
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Choose words from the list to complete the sentences. Each word may be used once, more than once or not at all. accommodation brain vasoconstriction diffusion vasodilation evaporation heart homeostasis saliva sweat tears The skin helps to keep the body temperature constant. This is part of the process called . Control of body temperature is coordinated by the . If the temperature of the blood rises above normal, the body responds by of the blood vessels near the surface of the skin. Some glands in the skin also produce which helps cool the body by .
0610_w15_qp_23
THEORY
2015
Paper 2, Variant 3
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Questions Discovered
120