(a(i))[2]
State the names of the types of neurones at X and Y in Fig. 6.1. X [BLANK] Y [BLANK].
(a(ii))[1]
State the name of one effector shown in Fig. 6.1.
(a(iii))[1]
State the name of the homeostasis control mechanism shown by the flow chart in Fig. 6.1.
(b(i))[3]
Describe how shunt vessels in the skin work to help cool the body when body temperature is high.
(b(ii))[3]
Describe how the sweat glands and the hair erector muscles function in mammals when the external environment is hot.
(c(i))[1]
Suggest an advantage of using neurones rather than hormones to regulate body temperature.
(c(ii))[2]
List two hormones that are involved in homeostasis.