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Excitable cells are those that can be stimulated to create a tiny electric current.
Muscle cells and
nerve cells (neurons) are excitable.
Reflexes that activate smooth and cardiac muscles and the glands. They regulate digestion, elimination, blood pressure, salivation, and sweating.
muscle or glands responding to an impulse by contracting, relaxing or secreting, respectively.
Receptors that generate impulses when they are deformed by a mechanical change (touch, pressure, vibration, stretch and itch).
Receptors that respond to chemicals in solution (smell, taste, or changes in blood chemistry).
Special nerve endings in the muscles and tendons and other organs that respond to stimuli regarding the position and movement of the body. Proprioceptors help us regulate balance. They are frequently stretch (mechanoreceptors) receptors because as we start to fall over muscles on one side of our body will get stretched so these muscles will respond by tightening up. We do this without even thinking about it.
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