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Senses, receptors and sensors

  1. Our body contains many senses and receptors to measure everything inside and outside our body and to compare it with the 'norm'. This allows us to react immediately to a change - both internally and externally. This article discusses receptors for temperature, blood composition, and those in our muscles.

Senses and Sensors

  1. The sensory system

Thermoreceptors: temperature

  1. Scattered in the skin are thermoreceptors

Chemoreceptors: blood composition

  1. In the brain stem and in the wall of the carotid arteries and the aortic arch are chemoreceptors that respond most to the pCO2 in the blood. With vigorous activity of the body, the pCO2 of the blood increases. As a result, impulses go from the chemoreceptors via nerves to the respiratory center

Blood: pO2 - pCO2 - pH

  1. The influence of acidity concentration in the blood on the chemoreceptors is related to the influence of the pCO2 on the pH. A high pCO2 causes a drop in pH due to the formation of hydrogen carbonate

Muscle spindles

  1. Information about the tension in the muscles and the flexion of the joints are very indispensable for the brain to develop certain physical postures. There are countless senses located between the muscle fibers, the muscle spindles

Stretch receptors

  1. Suppose you sit down. The angle between the lower and thigh is measured by stretch receptors from the knee joint. During standing up, it is each time different joint senses that register the bending of the knee. The faster the change, the more impulses (for example, the eye). Using the information, the cerebellum can coordinate the movements of muscles and joints.

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