Waec Model Questions Vol1 2021 Biology Question 9

Practice objective / multiple choice question 9 from the 2021 Waec Model Questions Vol1 Biology examination.

Waec Model Questions Vol1 2021 Biology Objective / Multiple Choice Medium Difficulty
Question 9 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • objective

During a sudden rise in ambient temperature, the human body initiates a negative‑feedback response to maintain core temperature around 37 °C. Identify the primary sensor, the integrative centre, and the main effector(s) involved in this thermoregulatory response.

Answer Options

A. Sensor - peripheral (muscle) thermoreceptors; Integrator - thalamus; Effectors - increased metabolic heat production and vasoconstriction
Correct Answer B. Sensor - peripheral (skin) thermoreceptors; Integrator - hypothalamic preoptic area; Effectors - sweat glands and cutaneous vasodilation
C. Sensor - hypothalamic thermoreceptors; Integrator - spinal cord; Effectors - panting and brown adipose tissue activation
D. Sensor - central (brain) thermoreceptors; Integrator - medullary respiratory center; Effectors - shivering and peripheral vasoconstriction
Correct Answer
B
Correct Option:
Sensor - peripheral (skin) thermoreceptors; Integrator - hypothalamic preoptic area; Effectors - sweat glands and cutaneous vasodilation

About This Question

This is Waec Model Questions Vol1 2021 Biology Question 9. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Biology examination.

Difficulty level: Medium .

View More Waec Model Questions Vol1 2021 Biology Questions More Waec Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support