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High School: 9th and 10th Grade
Biology
Changes In Capillary Blood Flow For Heat Loss
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Q.1
To allow for more heat loss, the vessels supplying the skin capillaries undergo...
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vasoconstriction
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vasodilation
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no change
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leakage of fluid
Q.2
Which of the following encourages heat loss by evaporation?
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Sweating
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Urinating
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Excretion
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Breathing
Q.3
When we are cold, muscles shiver to increase...
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heat generation
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heat loss
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cooling
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evaporation
Q.4
What is the core temperature for humans, in degrees C?
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38
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37
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37.4
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36
Q.5
Thermoregulation is an example of...
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keeping warm
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homeostasis
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hormonal control
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keeping fit
Q.6
Name the part of the brain that controls body temperature in mammals.
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Medulla
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Cortex
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Thermoregulatory center
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Cerebellum
Q.7
Name the special cells responsible for detecting temperature changes.
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Chemoreceptors
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Thermoreceptors
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Neuroreceptors
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Baroreceptors
Q.8
When we exercise, the skin looks red due to...
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more blood being pumped round the body
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less blood to the muscles
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increased blood flow in the skin capillaries
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increased sweating
Q.9
Skin contains thermoreceptors which send messages to which of the following, to start body responses to maintain body temperature?
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Heart
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Skin
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Thermoregulatory center
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Adrenal gland
Q.10
When blood vessels tighten and have a smaller lumen, we call this...
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vasoconstriction
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vasodilation
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vasomotion
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vasodirection
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