The primary function of osteoblasts is to
A. inhibit the growth of bone.
B. lay down bone matrix.
C. resorb bone along the epiphyseal plate.
D. prevent osteocytes from forming.
E. stimulate bone growth.
B
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A. zygoma B. maxillary C. palatine D. vomer
Which of the following vitamins is needed to aid in absorption of iron?
A) Vitamin A B) Vitamin B C) Vitamin C D) Vitamin D
The left subclavian vein receives lymph from the
a) Left axillary vein b) Lumbar trunk c) Jugular trunk d) Thoracic duct e) Right lymphatic duct
If the Tm for a particular amino acid is 120 mg/100 ml and the concentration of that amino acid in the blood is 230 mg/100 ml, the amino acid will ________
A) appear in the urine B) be completely reabsorbed by the tubule cells C) be actively secreted into the filtrate D) be completely reabsorbed by secondary active transport