In these views of the trachea, what structure does number 1 indicate?
A. Trachealis muscle
B. Thyroid cartilage
C. Cricoid cartilage
D. Anular ligament
E. Tracheal cartilage
B
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In von Willebrand disease, which is either autosomal recessive or autosomal dominant, clotting time slows and the person bruises and bleeds easily. Not everyone who inherits the disease genotype actually develops the phenotype. Affected individuals have differing degrees of difficulty in blood clotting. This condition is
A. completely penetrant, variably expressive, and not genetically heterogeneic. B. completely penetrant, invariably expressive, and not genetically heterogeneic. C. incompletely penetrant, variably expressive, and genetically heterogeneic. D. pleiotropic and genetically heterogeneic.
People with blood type ____ can receive blood type AB-
A. O- B. AB+ C. O+ D. B- E. A+
A 56-year-old woman has worked in a photography shop developing film for the past 20 years
She has a long history of shortness of breath and chronic cough, which have progressively become worse. Her FEV1 and FVC values were reduced, but her FEV1/FVC ratio was within the normal range. Her diffusion capacity as measured by DLCO was low at 15 mL/min/mm Hg. A bronchoalveolar lavage and tissue biopsy were performed. The lavage sample revealed high numbers of macrophages but of abnormal appearance and high numbers of dead macrophages. What type of lung disease do you suspect? A. restrictive disease B. obstructive disease C. infectious disease D. lung cancer E. genetically inherited disease
The action of many prescription drugs is to block the effects of enzymes by competitive inhibition. Explain what this means to your patient who is taking one of the drugs
A) This drug helps by breaking down the enzyme. B) This drug helps by blocking the binding of the substrate to the active site. C) This drug helps by blocking the binding of the substrate by binding to the enzyme. D) This drug helps by binding to the substrate instead of the enzyme.