5.2 The human nervous system

EasyMedium
12345678910111213141516171819202122232425262728293031323334353637
Question 34
Medium

An investigation was carried out to study how consuming a cold beverage affects a person's core body temperature and rate of sweating.

Here is the method used:

  1. A participant was seated in a warm room maintained at a constant temperature of 29∘C29^\circ\text{C}29∘C.
  2. The participant's core body temperature was continuously monitored using a sensor close to the brain.
  3. The participant's rate of sweating was measured simultaneously.
  4. After 10 minutes, the participant drank 500 cm3500\text{ cm}^3500 cm3 of an ice-cold beverage.
  5. The monitoring of core body temperature and sweat rate was continued for an additional 40 minutes.

The results of the study are shown in Figure 1 and Figure 2 below.

Experimental data showing core body temperature and rate of sweating over 50 minutes.

a.

State the participant's normal internal body temperature before consuming the ice-cold beverage.

[1]
b.

Explain why the participant's core body temperature decreased shortly after drinking the ice-cold beverage.

[2]
c.

Explain how the change in sweating rate between 10 minutes and 20 minutes helps to restore the participant's normal body temperature.

[2]

5.2 The human nervous system Questions

  1. GCSE
  2. /Biology
  3. /5.2 The human nervous system