Orthopnea means
A) a breathing difficulty that is relieved by sitting upright
B) cessation of breathing
C) difficult or labored breathing
D) rhythmic variation in breathing
Ans: A) a breathing difficulty that is relieved by sitting upright
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What is the main function of mesenchymal cells?
A) produce collagen fibers B) maintain ground substance C) defend against infections D) make new connective tissue cells E) produce pigments
The muscle tissue that can be consciously controlled is
A. cardiac muscle tissue. B. intestinal muscle tissue. C. smooth muscle tissue. D. skeletal muscle tissue.
Which statement regarding the chambers of the heart is not true?
A. The atria are receiving chambers and the ventricles are pumping chambers. B. The right half of the heart contains deoxygenated blood and the left half of the heart contains oxygenated blood. C. The thickest myocardium is in the ventricles. D. All of the above statements are true. E. None of the above statements is true.
The portion of the uterine wall that includes the basal layer is the
A. myometrium. B. perimetrium. C. endometrium. D. serosa. E. muscularis.