Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which tissue?
A) simple squamous
B) transitional
C) simple columnar
D) stratified squamous
C) simple columnar
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Parathyroid hormone is the major regulator of the plasma concentration of which of the following ions?
a) Calcium b) Sodium c) Potassium d) Chloride e) Manganese
Lymph nodes may be found individually, or clustered in specific regions of the body. Which cluster of lymph nodes receives lymph from the head and neck?
A. Inguinal lymph nodes B. Cervical lymph nodes C. Thoracic lymph nodes D. Axillary lymph nodes E. Abdominal lymph nodes
Adjustment to close-range vision involves all of the following except ________.
A. ciliary muscle activity B. light adaptation C. activity of the extrinsic eye muscles D. constriction of the pupil E. change in the curvature of the lens
Why is the contraction strength of smooth muscle relatively independent of its resting length?
A. It does not have intercalated discs. B. It is regulated by a length-tension relationship. C. It gets nearly all of its Ca2+ from the extracellular fluid. D. It does not have sarcomeres. E. It is involuntary muscle.