If an ultrasound scan reveals that a fetus at six weeks of gestation is approximately the size of Lincoln on a penny,
A) the fetus is too small for its age.
B) the fetus is developing at a normal rate.
C) this fetus is probably only one of a multiple birth.
D) there is probably a problem with the placenta.
E) None of the answers are correct
B) the fetus is developing at a normal rate.
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_________ receptors respond continuously to a stimulus at a constant rate
Fill in the blank with correct word.
Antidiuretic hormone binds to receptors on ________ cells in the collecting ducts and distal tubules where it ________.
A) principal : causes vesicle with aquaporin-3 to insert into the apical membrane B) intercalated : causes vesicles with aquaporin-3 to insert into the apical membrane C) intercalated : causes vesicles with aquaporin-2 to insert into the basolateral membrane D) granular : causes vesicles with aquaporin-2 to insert into the apical membrane E) principal : causes insertion of aquaporin-2 into the apical membrane
What is the definition of "muscle tone"?
A. The sound made by a muscle at rest B. The tension in a muscle that is only due to the passive resistance of elastic structures C. The resistance of muscle to continuous passive stretch D. The maximum contraction strength that a muscle is capable of E. The average length of the muscle fibers in a given motor unit
Which layer of the epidermis is the deepest?
A) Stratum granulosum B) Stratum basale C) Stratum corneum D) Stratum spinosum