Thursday, June 09, 2005

Horizontal Therapy Terms

Horizontal Therapy-based on the premise that bioelectric changes in living tissues are strictly combined with biochemical changes and vise versa. Cells are electrical and biochemical in nature and act by combining these two mechanisms to produce an effect.
Synergistic effect-2 channels working at one time. When joint together produces a greater effect.
Electrical potential-the difference in the concentration of charged particles between one point and another.
Polarized-difference in the electrical charge between the inside and the outside of the membrane. Potential is present. The membrane of an unstimulated neuron is polarized. Polarization is established by maintaining and excess of sodium ions (Na+) on the outside and an excess of potassium ions (K+) on the inside. More negative ions on the inside of the membrane than on the outside.
Resting potential- -70 millivolts (mV) -the negative value means there are more negatively charged particles on the inside of the membrane than on the outside. Unstimulated and polarized state.
Graded potential-change in the resting potential in response to stimulus. This happens when the stimulus causes Na+ and K+ gated channels to open. If Na+ channels open, positive sodium ions enter, and the membrane depolarizes (becomes more positive).
Gated channels-open as a result of stimuli and action potentials, and response to neurotransmitters. Ions pass through these channels to go from inside of the membrane to the outside and visa versa.
Depolarization-voltage shifts to a less negative value. Becomes more positive.
Action potentials-a cellular reaction resulting from a sufficient level of energy being provided to the cell. Rapid up and down shift in membrane voltage. From the negative RMP (resting membrane potential) to a positive value and then back to a negative value again. They do not get weeker with distance. Can't be stopped once it begins. Change in polarity. Releases a neurotransmitter called acetycholine (diffuses). Complete depolarization (from -70 to about +30 millivolts). Open Na+ gates then continue to open other Na+ gates.
Nerve impulse- a wave of action potentials, one after the other.

0 Comments:

Post a Comment

<< Home