The enzyme cyclooxygenase (COX) initiates a pathway leading to formation of prostaglandins and thromboxanes
a. True
b. False
Indicate whether the statement is true or false
True
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Which organelle synthesizes steroids in the ovary and stores calcium in muscle cells?
A. Golgi complex B. Nucleus C. Rough endoplasmic reticulum D. Smooth endoplasmic reticulum E. Mitochondrion
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 clotting of blood. This condition is A) incompletely penetrant, variably expressive, and genetically heterogeneic. B) completely penetrant, invariably expressive, and not genetically heterogeneic. C) pleiotropic and genetically heterogeneic D) completely penetrant, variably expressive, and not genetically heterogeneic.
Which of the following are classified as "mechanoreceptors"?
A. cone cells in the eye B. taste buds on the tongue C. hair cells in the olfactory mucosa D. hair cells in the cochlea
The outermost layer of a blood vessel is (the)
A) adventitia. B) media. C) intima. D) endothelium. E) None of the answers are correct.