BONUS ~ 2 (3 pts): HIV is a virus that targets and kills T-helper cells but leaves most other immune cells such as neutrophils, B-cells and T-cytoxic cells unharmed. Why is the destruction of T-helper cells so devastating to the immune system? To receive full credit, you must be complete and thorough in your answer. Include in your answer: A) The function of T-helper cells. B) An explanation of why destruction of these cells affects the entire immune system.

During the female reproductive cycle, LH is at its highest levels

During moderate exercise, venous return increases significantly. How does this increase in venous return affect preload and ultimately support cardiac output?

If blood pressure stayed the same, what other factor could be targeted to adjust blood flow to a tissue?

Blood volume and blood pressure is(are) regulated by which of the following hormone(s)?

MATCHING – Blood and Blood Vessels Directions – Choose the answer that best matches the description or term. You may use each answer once, more than once, or not at all. EACH QUESTION HAS ONLY ONE CORRECT ANSWER. (5 pts)

MATCHING – The Endocrine System: Directions – Choose the answer that best matches the description or term. You may use each answer once, more than once, or not at all. EACH QUESTION HAS ONLY ONE CORRECT ANSWER.

Cytotoxic cell mediated immunity is provided by

Heart rate and contractility are increased by

Which of these factors would cause an INCREASE in heart rate?