Histology nbme Study guides, Class notes & Summaries

Cell membrane - Phosphatidylcholine and sphingomyelin on EC side Phosphatidylethanolamine and phosphatidylserine on inside Increase in cholesterol => decrease in fluidity/permeability In some cells, covered by carb-rich glycocalyx Receptor-mediated endocytosis => both receptor and ligand get ingested by clathrin-coated vesicle Disorders of transport - CF: defect in CTFR => salty sweat and thick mucus Cystinuria: inability to reabsorb cys in kidneys => kidney stones Hereditar...

1.Nuclear pores: A)Combine to form a hexagonal structure B)Have 50nm in diameter C)Their number is not connected with cellular activity D)Nuclear lamina are connected to their inner rings E)A and C are correct F)B and D are correct - E)A and C are correct The conducting zone of the respiratory system: A) Includes the upper airways, trachea and the bronchial tree (including the terminal bronchioles) B) Is designed for airflow and respiration C) Includes only the nose and the pharynx D)...

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Cell membrane Correct Answer Phosphatidylcholine and sphingomyelin on EC side Phosphatidylethanolamine and phosphatidylserine on inside Increase in cholesterol => decrease in fluidity/permeability In some cells, covered by carb-rich glycocalyx Receptor-mediated endocytosis => both receptor and ligand get ingested by clathrin-coated vesicle Disorders of transport Correct Answer CF: defect in CTFR => salty sweat and thick mucus Cystinuria: inability to reabsorb cys in kidneys =&gt...

Hematoxlyin and Eosin - 1. Hematoxylin = basic dye stains acidic molecules like nucleus, DNA, RNA 2. Eosin = acidic dye stains basic molecules like cytoplasm Plasma membrane - lipid bilayer in which proteins are embedded -has 2 layers 1. hydrophilic = head 2. hydrophobic = tail 2 types of proteins in plasma membrane: 1. Integral membrane proteins = inside the plasma membrane 2. Peripheral membrane proteins = outside of the membrane

Defines cardiac muscle: Correct Answer Connected by intercalated discs and composed of branched cells No conn. tissue Three layers of cerebellum: Correct Answer Inner: Granular layer Middle: Purkinje cells Outer: Molecular layer Derived from cytoplasm of megakaryocytes: Correct Answer Platelets/thrombocytes 9+2 arrangement of microtubules: Correct Answer Cilia and axonemes Needed for muscle contraction of skeletal muscle: Correct Answer Ca2+ and ATP Supporting cell of CNS ...

rRNA is synthesized here - nucleolus intercellular junction type in the intestines - tight junctions emphysema in what part of the lung - alveolar duct Norepi causes the production of melatonin in what location by stimulating cAMP production - pinealocytes nuclear protamines are synthesized where - (late stage) spermatids a protein translated on a ribosome is directed to the ER because why? - a hydrophobic signal sequence is encoded into the protein at its amino terminus what causes th...

Hematoxlyin and Eosin Correct Answer 1. Hematoxylin = basic dye stains acidic molecules like nucleus, DNA, RNA 2. Eosin = acidic dye stains basic molecules like cytoplasm Plasma membrane Correct Answer lipid bilayer in which proteins are embedded -has 2 layers 1. hydrophilic = head 2. hydrophobic = tail 2 types of proteins in plasma membrane: 1. Integral membrane proteins = inside the plasma membrane 2. Peripheral membrane proteins = outside of the membrane *steroids are lip...

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Hematoxlyin and Eosin Correct Answer 1. Hematoxylin = basic dye stains acidic molecules like nucleus, DNA, RNA 2. Eosin = acidic dye stains basic molecules like cytoplasm Plasma membrane Correct Answer lipid bilayer in which proteins are embedded -has 2 layers 1. hydrophilic = head 2. hydrophobic = tail 2 types of proteins in plasma membrane: 1. Integral membrane proteins = inside the plasma membrane 2. Peripheral membrane proteins = outside of the membrane *steroids are lip...