### action | reduction:

Contraction
* Most contraction causes forces
  - suck forces
  - creates forces
  - is caused by stimulation
* Most contractions decrease the flow of blood and oxygen to the baby for a short time
  - blood to the baby for a short time
  - start as a tightening in the lower back and radiate to the front of the abdomen
* Some contraction causes muscle damage
  - contractions start at the top of the uterus and travel down the abdomen
* abate when the woman walks or changes position.
* appear in a natural way in the theory of nonarchimedean exponential fields.
* are a way of the uterus preparing for delivery
  - initiated by an influx of calcium which binds to calmodulin
  - the sign of labor everyone expects
* become more and more intense once water breaks
  - strong, longer, and closer together over time
* cause the cervix to open before the baby has had enough time to develop.
* causes distress
  - lower pressure
  - movement
  - sound
  - strong forces
* come closer together as time goes on.
* commonly cause bleeding for mothers with a placenta previa.
* elevates the testis for ejaculation.
* ends when the level of cytosolic calcium returns to normal resting levels.
* have a restrictive influence also on the rhythm of the craniosacral system.
* heats the core until nuclear fusion of hydrogen into heluim begins.
  - stimulated by twitches, the unit of contraction
* is triggered by a nerve impulse that depolarizes the membranes of muscle fibers
  - calcium ions and during contraction the length of the sarcomere changes
  - what muscles do, and in the heart, the contraction is what makes the heart beat
  - words
* move contents by changing the configuration of the isolated cat stomach.
* occurs after an action potential.
* produces internal pressure
* refers to the active process of generating a force in a muscle.
* serves to raise the body of the tongue.
* start when the baby is ready to be born.
* stretches an organ called the muscle spindle.
* type of movement.
+ Linguistic reduction: Linguistics
  * Linguistic reductions' are lost sounds in words. This happens in spoken English. The most widely known reductions are contractions. Most contractions are reductions of 'not'. Many contractions are reductions between a subject and a verb.

### action | reduction | contraction:

Cardiac contraction
* are called systolics and reliefs, diastole.
* is controlled by a group of specialized pacemaker cells in the right atrium.

### action | reduction | contraction:

Contracture
* appear early in the disease, usually involving the ankle and elbow.
* are contraction
  - painful and disabling, and can contribute to the development of pressure sores
* associated with weakness and spasticity can be painful.
* can cause the breasts to feel hard
  - develop when a scar intersects perpendicularly to a joint crease
  - occur early and compound the problem of muscle weakness
* commonly evolve, secondary to induration and thickening of the fascia.
* generally affect certain sets of fibres rather than the muscle as a whole.
* is contraction
  - one of the most significant consequences of spasticity
* limit a person's range of motion, and are often painful.
* occur primarily in the skin, underlying tissues, muscle , tendons, and joint areas.

### action | reduction | contraction | contracture:

Capsular contracture
* can also be painful and tight feeling
  - cause local discomfort and upward displacement of the implant
  - occur to varying degrees
* common problem associated with breast implants.
* is the development of a layer of scar-like tissue around the breast implant.
* tightening of scar tissue around the implant.
* variable response to implants and multifactorial.

Rapid contraction
* increases the ventricles' demand for oxygen.
* prevent the heart from filling adequately with blood between beats
  - ventricles from filling completely with blood between beats