When the body is too warm, dermal blood vessels will undergo _______ in order to increase heat loss
Fill in the blank with correct word.
vasodilation or dilation
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The anterior surface of the heart consists mostly of this chamber.
A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle
During an asthma attack, bronchioles become severely _______. Taking epinephrine causes them to _______.
A. constricted; dilate B. dilated; constrict C. mucus-filled; empty of mucus D. both a and c
It has been suggested that the lymphatic system evolved when animals became larger and the hydrostatic pressure in their circulatory systems rose. Explain how this suggestion is consistent with the function of the lymphatics-how does high blood pressure make lymphatic function essential? Also, what other advantages were gained by animals that developed lymphatic systems?
What will be an ideal response?
Which type of hormone requires a carrier protein in the blood?
A. Lipid-soluble hormone B. Oligopeptide C. Water-soluble hormone D. Autocrine hormone