Endocrine System Notes on test 1
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Cells communicate 4 ways?
- Gap Junction
Join Single-Unit smooth muscle cardiac muscle, epithelial and other cells to each other. They enable the cells to pass nutrients, electrolytes and signaling molecules directly from the cytoplasm of one cell to the cytoplasm of the next through pores in their plasma membranes?
Are released by neurons, diffuse across a narrow synaptic cleft, and bind to receptors on the surface of the next cell.
Are secreted by one cell, diffuse to nearby cells in the same tissue, and stimulate their physiology. Some call them local Hormones?
In the strict sense, are chemical messengers that are transported by the bloodstream and stimulate physiological responses in cells of another tissue or organ, often a considerable distance away. Certain hormones produced by the pituitary gland in head , for example, act on organs as far away as the pelvic cavity?
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