When an osteoblast becomes completely surrounded by its own matrix secretions it is referred to as an ________
A) osteogenic cell
B) chondrocyte
C) osteoclast
D) osteocyte
D
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Which of the following events occurs when erythrocytes are destroyed?
A. Urine output increases. B. Bile is manufactured by the gallbladder. C. Heme is transported by transferrin to the liver. D. The globin portion of the molecule is broken down into amino acids. E. Iron is secreted into the bile.
The lymphatic system is involved in circulation, immunity, and nutrient absorption.
Answer the following statement true (T) or false (F)
Which of the following organelles function in the destruction of nonfunctional organelles?
A. basal bodies B. centrioles C. mitochondria D. endoplasmic reticulum E. lysosomes
How does lung perfusion work in ventilation-perfusion coupling?
A. Alveolar capillaries constrict where the partial pressure of oxygen is low, so blood is diverted to where the partial pressure of oxygen is high. B. If partial pressure of carbon dioxide increases, the bronchioles dilate. C. Air flow is directed to lobules where partial pressure of carbon dioxide is high. D. If partial pressure of carbon dioxide decreases, the bronchioles constrict.