Saturday, August 1, 2009

. Telereceptors are receptors where the origin of thestimulus comes from a distance, (eg, vision, audition). This _form of sense, thus, can be called

Telereceptors are receptors where the origin of thestimulus comes from a distance, (eg, vision, audition). This _form of sense, thus, can be called telereception. 3. Interoceptors are those which detect any change in the internal environment [eg, changes in blood pressure (baroreceptors), changes in 02 tension/pH of blood (chemore-ceptors)] Such senses may be called interoception. 4. Proprioceptors are receptors which detect the degree of tone/ contraction of skeletal muscles (length detection), the degree of flexion/extension/other movements of joints and thus the CNS is kept informed of the position of the body/limb in space, posture and so on. Such senses may be called proprioception. Some commonly used terms 1. 'Somasthetic senses' means - (i) touch - pressure, (ii) thermal, (iii)) pain and (iv) proprioceptive senses plus various 'synthetic' cutaneous senses (eg vibration/stereognosis). 2. Conscious and non-conscious senses. Some senses (eg. pain) reach the level of consciousness in the brain. Such senses are called conscious senses. Some senses, on the other hand, do not reach the level of consciousness and thus they form nonconscious (or subconscious) senses. Examples are (i) some proprioceptive senses, (n) baroreceptor senses etc. 3. Synthetic senses. The senses mentioned above, are all fundamental senses. However many other senses exist, which are admixtures of two (or more) fundamenlal senses and are called synthetic senses.

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