Which of the following statements describes the histology of the ureters?
A) They are trilayered (mucosa, muscularis, and adventitia).
B) They are actually an extension of the visceral peritoneum.
C) They are made up of several layers of endothelium.
D) They are made up entirely of muscle tissue because they need to contract in order to transport urine efficiently.
A) They are trilayered (mucosa, muscularis, and adventitia).
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A cute, little curly-haired child is sitting behind you in church. You turn around for a moment and she sticks her tongue out at you. Which tongue muscle did she use?
A) orbicularis oris B) stylohyoid C) hyoglossus D) genioglossus
Blood flow to a tissue will increase if the
A) level of oxygen at the tissue increases. B) level of carbon dioxide at the tissue decreases. C) veins constrict. D) arterioles dilate. E) All of the answers are correct.
Which of the following layers of the filtration membrane is closest to the plasma?
A. podocytes B. macula densa C. glomerular endothelium D. the basement membrane E. parietal layer of Bowman's capsule
A karyotype of a baby born with abnormalities indicates that the child has 47 chromosomes. What conclusion could you draw?
A. The developing embryo was exposed to a teratogen between weeks 3 and 4 after fertilization. B. The baby has Turner syndrome. C. The mother was probably over the age of 35 when she conceived. D. The zygote was exposed to a mutagen. E. Nondisjunction during meiosis affected either the egg or sperm.