Which of the following is true about epithelia?
A) Pseudostratified epithelia are commonly keratinized.
B) Stratified epithelia are associated with filtration.
C) Endothelium provides a slick surface lining all hollow cardiovascular organs.
D) Simple epithelia are commonly found in areas of high abrasion.
C
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Blood flow is pulsatile in arteries and veins, but it is steady in capillaries
Indicate whether the statement is true or false
Research scientists working in the field of infectomics are studying _____.?
A) ?biological agents most likely to be used in bioterrorism B) ?new drugs to treat infections C) ?how diseases are spread between geographical locations D) ?the genes and functions of microorganisms
Name the two arteries formed by the division of the brachiocephalic trunk
A) right common carotid artery and left common carotid artery B) right subclavian artery and left subclavian artery C) left common carotid artery and left subclavian artery D) right common carotid artery and right subclavian artery E) right common carotid artery and left subclavian artery
Upon palpating the anterior abdominal wall of a patient, you notice an intense reflexive muscular contraction in the abdominal muscles. Which of the following is not correct pertaining to this sign?
A) It is called "guarding." B) It may indicate an inflamed appendix. C) Functionally, these spasmodic muscular contractions are an attempt to protect the underlying viscera. D) It is best observed when the patient is perfectly supine. E) The impulses for muscular contractions are carried through the ventral rami of the inferior thoracic and first lumbar nerves.