Adrenocorticotropic hormone (ACTH) ________. - ANS-secretion is connected to longterm stress response Antidiuretic hormone (ADH) ________. - ANS-secretion is inhibited by alcohol The major target of glucagon is ________. - ANS-the liver At age 85, Lyle's immune system does not respond to vaccines as well as it did when he was younger. The atrophy of which endocrine gland is likely responsible for this? - ANS-thymus If you centrifuge (spin) whole blood, you will find the red blood cells (erythrocytes) at the bottom of the tube and white blood cells atop them. This implies that ________. - ANSred blood cells have a greater density than white blood cells Which of the following is not a phase of hemostasis? - ANS-fibrinolysis A car accident has left one of the driver's unconscious and in need of blood. The EMTs on site do not have any of the universal donor blood available due to their ambulance not being properly stocked. A quick check of the driver's blood type reveals that she is AB-. Other than the universal donor type, what type(s) of blood could she be given? - ANS-A-, B-, ABWhich type of blood component is described as a product of a megakaryocyte that plays an important role in hemostasis? - ANS-platelet Normal heart sounds are caused by which of the following events? - ANS-closure of the heart valves The P wave of a normal electrocardiogram indicates ________. - ANS-atrial depolarization During contraction of heart muscle cells ________. - ANS-sodium begins depolarization and around -40 mV they are triggered to release larger amounts of calcium from intracellular stores The aorta receives the full force of blood exiting the heart during ventricular systole. Which of the following statements best describes the adaptive anatomy of the aorta? - ANS-Elastic fibers are extensive in the tunica media of the aorta and dampen the pulse pressure generated by the heart. Which of the following processes provides a long-term response to changes in blood pressure? - ANS-renal regulation Which of the following is a type of circulatory shock? - ANS-vascular, due to extreme vasodilation as a result of loss of vasomotor tone Which of the following is least involved in pulmonary circulation? - ANS-superior vena cava Primary hypertension can be caused by ________. - ANS-genetics Which of the following best describes the difference between an amino acid and a steroid-based hormone? - ANS-amino acid based hormones require receptors at the surface of a cell for entry while steroid based hormones do not The second-messenger mechanism of hormone action operates by ________. - ANSbinding to specific receptors and employing the services of G proteins and cAMP Upon landing at the airport in Lagos, Nigeria, Eric feels wide awake even though the local time is 11pm. Which synthetic hormone supplement could he administer to help adjust to the new time zone? - ANS-melatonin During an afternoon class, Lisa starts to feel hungry and worries that her blood sugar level may be dropping. Which hormone is helping to prevent a drop in blood sugar level? - ANS-Glucagon Loss or lack of fibrinogen within the plasma would most likely cause which of the following? - ANS-Lack of blood clotting A mismatch of blood types during a transfusion is dangerous because ________. - ANS-preformed antibodies in the recipient's blood will bind and clump (agglutinate) the donated cells Which of the following might trigger erythropoiesis? - ANS-hypoxia of EPO-producing cells The three main functions of blood are transport, regulation and - ANS-protection Select the best description of hemoglobin from the choices below. - ANS-made of 2 beta and 2 alpha globins and 4 heme groups; can transport up to 4 oxygen molecules The left ventricular wall of the heart is thicker than the right wall in order to ________. - ANS-pump blood with greater pressure The source of blood carried to capillaries in the myocardium would be the ________. - ANS-coronary arteries Select the correct statement about the heart valves. - ANS-The atrioventricular (AV) valves prevent backflow of blood into the atria during ventricular contraction. Compared to skeletal muscle, cardiac muscle ________. - ANS-has gap junctions that allow it to act as a functional syncytium The layers of the heart include which of the following from outermost to innermost? - ANS-epicardium, myocardium, endocardium Which of the following would have the least influence on blood pressure? - ANS-White blood cell count Which statement best describes arteries? - ANS-All carry blood away from the heart. Permitting the exchange of nutrients and gasses between the blood and tissue cells is the primary function of ________. - ANS-capillaries The influence of blood vessel diameter on blood flow is ________. - ANS-significant because vessel diameter and blood flow are directly related A thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to the ________. - ANS-right side of the head and neck and right upper arm Which of the following would NOT be classified as a lymphoid organ? - ANS-Pancreas The thymus is most attractive during___. - ANS-Childhood Lymph leaves a lymph node via ___. - ANS-efferent lymphatic vessels. Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? - ANS-Right lymphatic duct. Function of the spleen includes all of those below except ___. - ANS-Forming crypts that trap bacteria. When the lymphatic structures of a limb are blocked due to tumors, the result is ________. - ANS-Severe localized edema distal to the blockage of that limb. Which of the following does not contain a mucosa associated lymphatic tissue? - ANSthymus Which of the following is not a function of the lymphatic system? - ANS-transporting respiratory gases.