Question 32 – 5.2 The human nervous system - Questions

An investigation was carried out to study the effect of drinking a warm beverage on the human body's thermoregulatory system. The participant sat in a room kept at a constant temperature of $22∘C22^\circ\text{C}$ . After $15$ minutes of rest, they drank $cm3400\text{ cm}^3$ of warm water at $50∘C50^\circ\text{C}$ . Their internal body temperature near the brain and their rate of sweating were monitored over a $60$ -minute period. The results showed:

From $0$ to $15$ minutes, the internal body temperature remained constant at $37.1∘C37.1^\circ\text{C}$ , and the rate of sweating was stable at a baseline level of $(a.u.)0.5\text{ arbitrary units (a.u.)}$ .
Shortly after consuming the drink at minute $15$ , the internal body temperature increased, reaching a peak of $37.5∘C37.5^\circ\text{C}$ at minute $25$ , before returning to $37.1∘C37.1^\circ\text{C}$ by minute $45$ .
The rate of sweating increased from $a.u.0.5\text{ a.u.}$ to a peak of $a.u.4.5\text{ a.u.}$ at minute $28$ , before gradually returning to its baseline.

Questions:

State why it is important that the participant remained seated and inactive throughout the entire $60$ minutes of the investigation.

Explain why the internal temperature measured near the brain increased shortly after drinking the warm water.

Explain how the change in the rate of sweating between $15$ minutes and $28$ minutes helps to return the internal body temperature back to its normal level.

From $0$ to $15$ minutes, the internal body temperature remained constant at $37.1∘C37.1^\circ\text{C}$ , and the rate of sweating was stable at a baseline level of $(a.u.)0.5\text{ arbitrary units (a.u.)}$ .
Shortly after consuming the drink at minute $15$ , the internal body temperature increased, reaching a peak of $37.5∘C37.5^\circ\text{C}$ at minute $25$ , before returning to $37.1∘C37.1^\circ\text{C}$ by minute $45$ .
The rate of sweating increased from $a.u.0.5\text{ a.u.}$ to a peak of $a.u.4.5\text{ a.u.}$ at minute $28$ , before gradually returning to its baseline.

Questions:

State why it is important that the participant remained seated and inactive throughout the entire $60$ minutes of the investigation.

Explain why the internal temperature measured near the brain increased shortly after drinking the warm water.

Explain how the change in the rate of sweating between $15$ minutes and $28$ minutes helps to return the internal body temperature back to its normal level.

5.2 The human nervous system

Question 24

5.2 The human nervous system

Question 24

5.2 The human nervous system

Question 24

5.2 The human nervous system Questions

5.2 The human nervous system

Question 24

5.2 The human nervous system Questions