Rio Bio 202 Exam 2 Questions And Answers Latest Updated

Elastic Arteries {Ans: (Conducting)-located near the heart, aorta and branches, largest in diameter}Respiratory Membrane {Ans: -- pulmonary capillary walls+squamous epithelial cell(Type I Cells) with flimsy basement membrane -Also Cuboidal (Type II) cells-*secrete surfactant*}Continuous Capillaries {Ans: abundant in muscles/skin, tight junctions formed by endothelial cells gaps in those junctions=intercellular clefts, compile *blood brain barrier*}B-Cells {Ans: -originate in 'B'one Marrow -receptors are membrane-bound antibodies -clonal deletion (apoptosis) and receptor editing (change self-reactive antigen receptor)}Structure of Lymph Nodes {Ans: -fibrous dense capsule, trabeculae (divide into compartments) -Cortex (contains dividing B cells, T cells in transit) -Medulla (medullary cords containing T and B lymphocytes and plasma cells)}Artificially Acquired Active Humoral Immunity {Ans: Vaccines, aim to 'prime' immune response by establishing 1st meeting}Veins {Ans: *thinner walls, larger lumens compared to arteries* veins hold a large blood volume Contain *venous valves (prevent backflow of blood)*}Fenestrated Capillaries {Ans: endothelial cells contain pores or fenestrations, found in the kidneys}Secondary Immune Response {Ans: reexposure to antigen}Conducting Structures {Ans: -Conduct/guide air to respiratory structures *the smaller the conducting structure the less cartilage, thinner epithelium, smooth muscle increases*}Spleen {Ans: blood 'cleanser', site of immune survey/response, lymphocyte growth, white pulp, red