Which of the following correctly describes the movement of O2 in systemic capillaries (in tissues)?

HCN channels are responsible for generating pacemaker potentials – these channels open in response to what?

Which of the following is true regarding B lymphocytes?

Which formed element of the blood plays an important role in the immune system?

Which of the following does NOT help venous blood return to the heart?

Which of the following would decrease someone’s ability to form a blood clot after damage to the endothelium of a blood vessel?

Which of the following would inhibit skeletal muscle contraction?

How does the hypothalamus control hormone secretion from the posterior pituitary gland?

In a stressful situation, the adrenal cortex will secrete cortisol. Which of the following would decrease secretion of cortisol from the adrenal cortex?

Which part of the hindbrain contains the apneustic and pneumotaxic respiratory control centers?