Harriet had liposuction several years ago, but has since gained back all the weight lost through the procedure. She does not understand her weight gain because adipocytes are incapable of dividing. Provide a plausible explanation
What will be an ideal response?
While it is true that adipocytes do not divide and the number of fat cells in peripheral tissues is limited, mesenchymal cells can divide and give rise to cells that differentiate into fat cells. Thus, areolar connective tissue can become adipose tissue in times of nutritional excess. Along with this, the fat cells that remain after surgery can enlarge by storing more triglyceride if the patient continues to overeat.
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Neural stem cells can be harvested from autopsies and stored, alive, in banks, whereas neurons cannot, because
A. neural stem cells have more globular shapes than neurons. B. neural stem cells have lower oxygen and energy requirements than neurons. C. neural stem cells have higher oxygen and energy requirements than neurons. D. people do not will them to science.
The inferior colliculi are auditory reflex centers of the midbrain
Indicate whether this statement is true or false.
Which type of lymphocyte has coreceptors that assist in the interaction of the lymphocyte with a cell presenting antigen?
A. T-lymphocyte B. B-lymphocyte
The stage of exhaustion in the stress response occurs after months of stress, and the body's homeostatic conditions deteriorate rapidly when
a. ATP can no longer be generated from mitochondria. b. the energy demands are met primarily by protein metabolism. c. the energy demands are met primarily by fat metabolism. d. the glycogen supplies are depleted. e. the energy demands are met primarily by carbohydrate metabolism.