Question

question 7 (1 point)
when the human body responds to a change in temperature, which structure is the
control centre?
pancreatus
hypothalamus
kidney
pituitary
skin
question 8 (1 point)
constriction of the blood vessels to the hands and feet is most likely a response to..
increasing body temperature
hyperthermia
decreasing body temperature
increasing blood glucose concentration
decreasing blood glucose concentration

Explanation:

• Question 7: The hypothalamus is the body's thermoregulatory center. It detects temperature changes and initiates responses to maintain homeostasis. The pancreas is involved in blood - sugar regulation (producing insulin and glucagon), the kidney in osmoregulation and waste removal, the pituitary is the "master gland" but not the temperature control center, and the skin is an effector (e.g., sweating) but not the control center.
• Question 8: Vasoconstriction (constriction of blood vessels) in the hands and feet reduces blood flow to the extremities. This is a response to decreasing body temperature. When the body is cold, it tries to conserve heat by reducing heat loss from the extremities. Increasing body temperature (e.g., in hyperthermia) would lead to vasodilation (to dissipate heat). Blood - glucose concentration changes are regulated by the pancreas (insulin and glucagon) and not directly related to vasoconstriction in the context of temperature regulation.

Answer:

• Question 7: hypothalamus
• Question 8: decreasing body temperature