How is the postabsorptive state controlled and initiated?
What will be an ideal response
The postabsorptive state is controlled by the interaction of the sympathetic nervous system and several hormones, especially glucagon. The trigger for initiating postabsorptive events is damping of insulin release, which occurs as blood glucose levels begin to drop. Insulin levels decline, and the insulin-induced cellular responses are inhibited.
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This cell is responsible for tissue graft rejection.
A. Memory cell B. Cytotoxic cell C. Regulatory cell D. Plasma cell
Cells that respond to ligands
A. are using electrical signals in cellular communication. B. generally produce the ligands. C. possess receptor sites for specific ligands. D. are not functional. E. have lysosomes that destroy the ligands.
Cardiac muscle can be distinguished from skeletal muscle because cardiac muscle:
a. Forms muscle fibers with larger diameters than those of skeletal muscle b. Has 15 to 20 nuclei per muscle fiber (cell) c. Lacks intercalated disks d. Lacks striations e. Possesses a nucleus located in the center of each muscle fiber
Sensitization to an allergen during the initial exposure leads to the production of large quantities of
A) antigen-antibody complexes. B) IgE antibodies. C) IgD antibodies. D) opsonins. E) Tc cells.