GENERAL PROPERTIES OF SENSORY Uo SYSTEMS 334 LO 10.1 Describe the different type
ID: 279038 • Letter: G
Question
GENERAL PROPERTIES OF SENSORY Uo SYSTEMS 334 LO 10.1 Describe the different types of receptors for somatic and special senses. LO 10.2 Explain how receptors convert physical stimuli into electrical signals using the following terms: transduction threshold, adequate stimulus, receptive field, receptor potential. LO 10.3 Explain how the central nervous system is able to determine modality location, intensity, and duration of a stimulus. LO 10.4 Explain how tonic and phasic receptors adapt to a continuous stimulus. SOMATIC SENSES 341 LO 10.5 Trace the pathways for somatic sensation from receptor to the somatosensory cortex. LO 10.6 Describe the different types of somatosensory receptors LO 10.7 Explain how pain and itch are mediated by nociceptors, and describe theExplanation / Answer
answer 10.1]
Different types of receptors for somatic and special senses are as follows:
Sense receptors= Chemoreceptors ,Nociceptors,Mechanoreceptors,Thermoreceptors and photoreceptors
1.Chemoreceptors = -detect chemical concentrations.
-In somatic senses ,chemoreceptors can detect ionic,glucose ,oxygen and carbon dioxide concentration in the blood and tissue fluids.
- In special senses chemoreceptors are responsible for the senses of taste (in oral cavity ) and smell (in nasal cavity).
2] Nociceptors = Detect pain or tissue damage due to excessive mechanical,electrical ,thermal or chemical forces.
-In somatic senses ,nociceptors can be found in the skin and many visceral organs detecting tissue damages.
3] Thermoreceptors = -Detect temperature changes.
-In somatic senses ,certain thermoreceptors detect cold temperature in the skin and some visceral organs,while other thermoreceptors detect high temperature only.
4]Mechanoreceptors = Detect mechanical forces.
in somatic senses ,proprioceptors detect muscle tension.
Pressoreceptors- detects blood pressure.
stretch receptors- detect lung inflation,stomach distention and urinary bladder expansion.
-In special senses ,mechanoreceptors in the inner ear detect the senses of hearing (in cochlea) and equilibrium (in semicircular canals).
5.Photoreceptors = -detect light intensity
-In special senses,photoreceptors in the eye detect the tones (by rods photoreceptor) and colors (by cones photoreceptors).of visual images.
somatic sensory receptors= found near the surface of the skin can usually be divided into two groups based on morphology.
They detect 3 types of somatic senses:
1.Exteroceptive senses- Detect changes that occur at body surface,such as touch,pressure and temperature.
2.Proprioceptive senses - detect changs that occure in uscles,tendons ,ligaments and joint
3.Visceroceptive senses- detect changes that occure in interansl organ.
3 types of somatic receptors=
1.Free sensory nerve endings - small swelling at the endings of dendrites that sensitive to somatic sensations.
-also are abundant in the dermis subcutaneous layers of the skin.
2.Corpuscular receptors = -endings of dendrites are enclosed in a connective tissue capsule.
-also are abundant in the dermis and subcutaneous layers of skin.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.