To determine that a type of epithelium is squamous, which of the following is most important?
A. The shape of the most superficial epithelial cells
B. The number of cell layers
C. The shape of the basement membrane
D. The shape of most of the epithelial cells
E. The shape of the basal epithelial cells
Answer: A
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Which of the following muscles is responsible for medially rotating the tibia on the femur when the knee is flexed?
A. Piriformis B. Semitendinosus C. Adductor brevis D. Vastus medialis E. Sartorius
Which of the following organs is affected by thyroid hormone in adults?
A) liver B) spleen C) thyroid gland D) brain
Venous return to the heart is aided by ________ and the ________.
Fill in the blank(s) with the appropriate word(s).
Which structures in the trachea prevent its collapse or overexpansion as pressures change in the respiratory system?
a. C-shaped tracheal cartilages b. S-shaped tracheal bones c. O-ringed tracheal cartilages d. irregular circular bones