Temperature control
14.5What the syllabus asks of you
- Identify, on a diagram of the skin: hairs, hair erector muscles, sweat glands, receptors, sensory neurones, blood vessels and fatty tissue
- Describe the role of insulation in maintaining a constant internal body temperature in mammals
- Describe the roles of the hypothalamus and of temperature receptors in the skin in maintaining a constant internal body temperature in mammals
- Explain how each of the following processes contributes to the maintenance of constant internal body temperature in mammals: (a) sweating (b) shivering (c) contraction of hair erector muscles (d) vasodilation and vasoconstriction of arterioles supplying skin surface capillaries
Read the notes first
Chapter 14: Temperature control
Drill this topic
Every question on Temperature control, untimed, marked as you go.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
11 questions
1Oct / Nov 2020 · Paper 11 · Q20Show mark scheme →
Abrain ✓, skin ✓
Bbrain ✓, skin ✗
Cbrain ✗, skin ✓
Dbrain ✗, skin ✗
Mark scheme
2Oct / Nov 2020 · Paper 11 · Q21Show mark scheme →
AA
BB
CC
DD
Mark scheme
3Oct / Nov 2020 · Paper 12 · Q20Show mark scheme →
Ablood vessels
Bfatty tissue
Chair follicles
Dsweat glands
Mark scheme
4May / June 2020 · Paper 11 · Q23Show mark scheme →
AA
BB
CC
DD
Mark scheme
5May / June 2020 · Paper 12 · Q23Show mark scheme →
AA
BB
CC
DD
Mark scheme
6Oct / Nov 2019 · Paper 11 · Q20Show mark scheme →
Acontrols heat loss from blood: Y; receives an external stimulus: X; releases fluid: Z
Bcontrols heat loss from blood: Y; receives an external stimulus: Z; releases fluid: X
Ccontrols heat loss from blood: Z; receives an external stimulus: X; releases fluid: Y
Dcontrols heat loss from blood: Z; receives an external stimulus: Y; releases fluid: X
Mark scheme
7Oct / Nov 2019 · Paper 12 · Q20Show mark scheme →
AArterioles supplying the skin have dilated.
BCapillaries in the skin have moved closer to the surface.
CThe person has started to sweat.
DTemperature receptors have ceased to function.
Mark scheme
8Oct / Nov 2019 · Paper 12 · Q22Show mark scheme →
A1, 2 and 4
B1, 3 and 5
C2 and 3
D4 and 5
Mark scheme
9May / June 2019 · Paper 11 · Q20Show mark scheme →
ABlood vessels in the skin become narrower.
BHair erector muscles relax so hairs lay flat.
CShivering by body muscles ceases.
DSweat glands become more active.
Mark scheme
10May / June 2019 · Paper 12 · Q16Show mark scheme →
AThe person cannot get rid of carbon dioxide.
BThe person has too much glucose for respiration.
CThere is less oxygen in the cold air breathed in.
DThe respiratory enzymes function more slowly.
Mark scheme
11May / June 2019 · Paper 12 · Q20Show mark scheme →
Awidth of blood vessels in skin surface: decreases; sweating: decreases
Bwidth of blood vessels in skin surface: decreases; sweating: increases
Cwidth of blood vessels in skin surface: increases; sweating: decreases
Dwidth of blood vessels in skin surface: increases; sweating: increases
Mark scheme