Thermoregulation

What detects the change in body temperature?

• Stimulus

• Peripheral thermoreceptors

• Effector

• External thermoreceptors

What part of the body co-ordinates the response to heating up or cooling down?

• Medulla Oblongata

• Hypothalamus

• Cerebrum

• Brain stem

Which of the following occurs when the body is too hot?

• Shivering

• Sweating

• Vasodilation

• Vasoconstriction

Which of the following DOES NOT occur when the body is too cold?

• Shivering

• Vasoconstriction

• Hairs stand on end

• Hairs lie flat

What is the effector that is stimulated to cause the movement of hairs on the body during a thermoregulatory response?

• Smooth muscle

• Liver cells

• Piloerector muscles

• Pilia muscles

What is the effector responsible for generating more heat through respiration when the body is too cold?

• Smooth muscle

• Liver cells

• Piloerector muscles

• Skeletal muscle

What is the effector that is responsible for someone to start sweating?

• Smooth muscle

• Sweat glands

• Skeletal muscle

• Liver cells

What is an endotherm?

• An organism that is unable to maintain a constant temperature using physiological responses alone.

• An organism that can maintain a constant internal temperature using physiological responses.

Which type of response to being too cold allows the body to retain more heat?

• Liver cells respire more

• Skeletal muscle contracts and relaxes

• Vasodilation

• Hairs stand on end

What type of response is an example of evaporative cooling?

• Shivering

• Sweating

• Hairs lying flat

• Liver cells respiring