Only autosomal trisomies involving chromosomes 13, 18, and 21 are survivable. Why would this be?
A) These are relatively short chromosomes.
B) These are redundant chromosomes.
C) These are relatively long chromosomes.
D) These are relatively gene-poor chromosomes.
E) These chromosomes have no genes.
D
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Describe the classic steps for identifying an endocrine gland. Are these steps practical for identifying the sources of all the hormones we know of today? Explain.
Fill in the blank(s) with the appropriate word(s).
An otoscope is used to examine which part of the ear?
A) auditory ossicles B) tympanic cavity C) cochlea D) tympanic membrane
A conscious but combative patient with severe facial trauma is fully immobilized on a backboard. During your assessment, the patient begins coughing up large amounts of blood. You suction his oropharynx, but his mouth quickly refills with blood. You should:
A) preoxygenate the patient with a bag-mask for 2 minutes and then perform nasotracheal intubation. B) roll the backboard on its side, suction his oropharynx, and prepare to perform pharmacologically assisted intubation. C) alternate suctioning of his oropharynx for 15 seconds and assisting ventilations for 2 minutes until his airway is clear of blood. D) continually suction his oropharynx until it is clear of blood, apply oxygen via nonrebreathing mask, and administer a sedative drug.
Muscles visible at the body surface are often called
A) internus. B) rectus. C) profundus. D) intrinsic. E) superficialis.