Bmd 252 Exam 3 Practice Questions Complete With Correct Answer

BMD 252 EXAM 3 PRACTICE QUESTIONS COMPLETE WITH CORRECT ANSWER .Which of the following is incomplete in sinusoidal capillaries? a. tight junctions b. intracellular clefts c. basement membrane d. endothelium - ANSWERS-basement membrane .Which statement best describes arteries? a. all carry blood to the heart b. all carry blood away from the heart c. most have relatively large lumens and thin walls d. only large arteries are lined with endothelium - ANSWERS-B .Peripheral resistance: a. decreases with decreasing length of a blood vessel * b. increases as blood vessel diameter increases c. increases as blood viscosity decreases d. is not affected by changes in laminar flow such as turbulence - ANSWERS-A .Which of the following is the last layer (tunic) a surgeon would repair in a broken artery? a. interna b. media c. externa d. intima - ANSWERS-externa .In capillary beds, a thoroughfare channel feeds directly into the ______________. a. postcapillary venule b. true capillary c. metarteriole d. thoroughfare channel - ANSWERS-postcapillary venule .Which of the following is a characteristic of macrophages? a. produces antibodies b. determines foreign (non-self) antigens c. phagocytizes foreign substances d. fibroblast-like stromal cells - ANSWERS-C .Splenic red pulp consists primarily of: a. macrophages b. venous sinuses c. lymphocytes d. erythrocytes - ANSWERS-erythrocytes .Lymph enters a lymph node via: a. efferent lymphatic vessels b. cortical sinus c. afferent lymphatic vessels d. subscapular sinus - ANSWERS-C .Which thoracic structure drains lymph from the right arm, thorax, & right side of head? a. thoracic duct b. right lymphatic duct c. cisterna chyli d. axillary nodes - ANSWERS-B .What lymphatic organ demonstrates blind-ended crypts that trap/destroy bacteria & particulate matter? a. spleen b. tonsil c. thymus d. lymph node - ANSWERS-tonsil .What respiratory process involves gas exchange between the lungs and blood?