anaphy
SENSE- is the ability to perceive stimuli.
SENSATION (PERCEPTION)- is the conscious awareness of stimuli received by sensory receptors.
GENERAL SENSES- are those with receptors distributed over a large part of the body.
SOMATIC SENSES- provides sensory information about the body and the environment.
VISCERAL SENSES- are more specialized in structure and are localized to specific parts of the body such as pain and pressure.
SPECIAL SENSES- are more specialized in structure such as smell, taste, sight, hearing and balance.
GENERAL SENSES
RECEPTORS- are sensory nerve endings or specialized cells capable of responding to stimuli.
TYPES:
1. Mechanoreceptors – respond to mechanical stimuli such as bending or stretching of receptors.
2. Chemoreceptors – respond to chemicals such as odor molecules.
3. Photoreceptors – respond to light.
4. Thermoreceptors – respond to temperature changes.
5. Nociceptors – respond to stimuli that result in the sensation of pain.
RECEPTOR OF THE SKIN
1. Free nerve endings
2. Cold receptors respond to decreasing temperatures but stop responding below 12°C and Hot receptors respond to increasing temperature but stop above 47°C.
3. Touch receptors: a. Merkel’s disks and Hair follicle receptors detects light touch and superficial pressure. b. Meissner’s corpuscles involved in fine and discriminative touch. c. Ruffini’s end organs detects continuous touch and pressure. d. Pascinian corpuscles detects deep pressure, vibration and position. PAIN
Pain is a sensation characterized by a group of unpleasant perceptual and emotional experiences.
Types:
1.Sharp, localized, pricking or cutting pain resulting from rapid action potentials.
2. Diffuse, burning, or aching pain resulting from slow action potentials.
Referred pain- is a painful sensation perceived to originate in a region of the body that is not the source of the pain stimulus.
SPECIAL SENSES
OLFACTION- is the sense of
SENSATION (PERCEPTION)- is the conscious awareness of stimuli received by sensory receptors.
GENERAL SENSES- are those with receptors distributed over a large part of the body.
SOMATIC SENSES- provides sensory information about the body and the environment.
VISCERAL SENSES- are more specialized in structure and are localized to specific parts of the body such as pain and pressure.
SPECIAL SENSES- are more specialized in structure such as smell, taste, sight, hearing and balance.
GENERAL SENSES
RECEPTORS- are sensory nerve endings or specialized cells capable of responding to stimuli.
TYPES:
1. Mechanoreceptors – respond to mechanical stimuli such as bending or stretching of receptors.
2. Chemoreceptors – respond to chemicals such as odor molecules.
3. Photoreceptors – respond to light.
4. Thermoreceptors – respond to temperature changes.
5. Nociceptors – respond to stimuli that result in the sensation of pain.
RECEPTOR OF THE SKIN
1. Free nerve endings
2. Cold receptors respond to decreasing temperatures but stop responding below 12°C and Hot receptors respond to increasing temperature but stop above 47°C.
3. Touch receptors: a. Merkel’s disks and Hair follicle receptors detects light touch and superficial pressure. b. Meissner’s corpuscles involved in fine and discriminative touch. c. Ruffini’s end organs detects continuous touch and pressure. d. Pascinian corpuscles detects deep pressure, vibration and position. PAIN
Pain is a sensation characterized by a group of unpleasant perceptual and emotional experiences.
Types:
1.Sharp, localized, pricking or cutting pain resulting from rapid action potentials.
2. Diffuse, burning, or aching pain resulting from slow action potentials.
Referred pain- is a painful sensation perceived to originate in a region of the body that is not the source of the pain stimulus.
SPECIAL SENSES
OLFACTION- is the sense of