1. Cerebral perfusion pressure is Arterial pressure minus peripheral venous pressure Venous pressure minus arterial pressure Arterial pressue x venous pressure Arterial pressure minus intracranial pressure 2. Which of the following cardiovascular changes is most likely to occur when changing from a standing to a supine position? Decreased total peripheral resistance Increased pulse Dilation of large veins Decreased myocardial contractility 3. Iron is conserved by None Hemimedins Hepicidin Hemopexin 4. Salivary amylase is activated by HCO3 Na+ Cl K+ 5. Which of the following plant components is not fermented by gastrointestinal microorganisms Hemicellulose Cellulose Lignin Pectin 6. A 3-year-old child has inhaled a peanut that has lodged in the right mainstem bronchus, largely occluding it. The child is cyanotic, with a PO2 of 60 mm Hg. Which of the following mechanisms best accounts for the child’s hypoxemia? Hypoventilation of central origin Decreased capacity of pulmonary diffusion Decreased PO2 in inspired air Inequalities of ventilation and perfusion 7. christmas disease occurs due to deficiency of factor XI factor X factor VIII factor IX 8. An increase in which of the following best explains the mechanism by which the cardiac output increases in severe anemia? Splanchnic blood flow Blood viscosity Arteriolar diameter Peripheral vascular resistance 9. Which of the following parameters is expected to increase in response to a 50% reduction in sodium intake for a 2-month period? Extracellular fluid volume Atrial natriuretic peptide release Arterial pressure Renin release 10. The blood within the vessels doesnot clot normally because Sodium citrate in plasma chelates calcium ions Thrombin has a positive feedback on plasminogen Vitamin K antagonists are present in plasma Vascular endothelium is smooth and coated with glycocalyx 11. Which of the following adjustments have probably occurred in the cardiac cycle if the pulse is greater than 200/min and the blood pressure is 75/40 mm Hg? Diastolic time has decreased and systolic time had increased Systolic time has decreased but diastolic time has decreased more Diastolic time has decreased but systolic time had decreased more Systolic time has decreased and diastolic time has increased 12. Coronary blood flow regulated by Sympathetic cholinergic system parasympathetic system Sympathetic adrenergic system Local muscle action and reflexes 13. baroreceptor are located in Tunica advantita None Tunica media Tunica intima 14. fetal hemoglobin has higher affinity for oxygen due to increased release of carbondioxide decreased 2,3 DPG concentration reduced pH oxygendissociation curve is shifted to right 15. normal pH of stomach is 11 to 12 7 to 7.2 4 to 5 8 to 9 16. Which of the following regions of the nephron is capable of the greatest level of glucose reabsorption? Thick ascending limb of loop of henle Proximal convoluted tubule Collecting duct Distal convoluted tubule 17. Which of the following procoagulant proteins binds to tissue factor exposed beneath the endothelium of traumatized blood vessels and initiates the clotting cascade? Factor VII Factor V Fibrinogen Factor X 18. which one of the following is not seen in humans menstrual cycle endometrial cycle estrous cycle ovarian cycle 19. Which of the following is most likely to be decreased during resting conditions for a patient that has been severely anemic (Hb = 6.0 g/dL) for several months? Cardiac output Mixed venous PO2 Arterial PO2 2,3-diphosphoglycerate 20. basal metabolic rate depends most closely on body surface area lean body mass obesity body mass index Loading … Question 1 of 20
