6.3 PEx: Cardiovascular Physiology Lab Part 1

Part A

Organisms that are poikilothermic _______.
    have temperature fluctuations that coincide with the external temperature and lack internal homeostatic temperature regulatory mechanisms
    maintain their body temperature range even though the external temperature is changing
    maintain their body temperature range even though the external temperature is changing and lack internal homeostatic temperature regulatory mechanisms
    have temperature fluctuations that coincide with the external temperature
    lack internal homeostatic temperature regulatory mechanisms

Part B

Which part of the human body regulates temperature?
    the anterior pituitary gland
    the hypothalamus
    the thyroid gland
    the heart

Part C

Heat-releasing mechanisms include which of the following?
    vasodilation
    vasodilation and sweating
    vasoconstriction
    sweating
    vasoconstriction and sweating