A client has arrived in the emergency department with massive blood loss from a lacerated liver. Knowing the physiological principles behind the capacity for cells to regenerate, the client's body will likely:
A) Pull fluid from the tissues to maintain a reasonable blood pressure
B) Stimulate rapid proliferation of RBCs by the blood-forming progenitor cells of the bone marrow
C) Activate the tissue cells to start producing stem cells
D) Begin a cell cycle so stem cells can undergo numerous mitotic divisions
Ans: B
Feedback:
Continuously dividing tissues are those in which the cells continue to divide and replicate throughout life, replacing cells that are continually being destroyed. These tissues can readily regenerate after injury as long as a pool of stem cells is preserved. Bleeding, for example, stimulates the rapid proliferation of replacement cells by the blood-forming progenitor cells of the bone marrow. Another type of tissue cell, called a stem cell, remains incompletely differentiated throughout life. As mature cells die, the tissue is replenished by the differentiation of cells generated from stem cells.
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