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Sensation
conscious or unconscious awareness of external or internal stimuli. TERM 2
Superficial Sensation
DEFINITION 2 includes touch, temperature, pain, etc from the surface of the body. Includes two point discrimination. We also call these sensations extero receptive sensations. TERM 3
Two point discrimination
DEFINITION 3 there are more sensory receptors in the hand as opposed to the upper arm. allows a person to feel more in the hand that in the arm. TERM 4
Deep Sensation
DEFINITION 4 this includes muscle fascia, bone and joint pain, vibration and proprioception. We call these sensations interoreceptive sensations. TERM 5
proprioception
DEFINITION 5 this is the detection of muscle and joint position and muscle and joint movement couples with equilibrium.
perception
conscious awareness and interpretation of sensations. TERM 7
sensory modality
DEFINITION 7 property by which one sensation is distinguished from another TERM 8
general senses
DEFINITION 8 include both somatic and visceral senses. the somatic senses are touch, pressure, vibration, itch, tickle, warmth, cold and pain arising in receptors located in the skin plus proprioception. The visceral senses come from internal organs. For example, baroreceptors ( detect pressure). Stretching of the organ is another type of visceral sense. TERM 9
Aortic Arch and the Common Carotid
Artery
DEFINITION 9 What are the two main arteries in which baroreceptors are found? TERM 10
special senses
DEFINITION 10 include smell (olfactory), taste (gustation), vision, hearing (auditory), and equilibrium. Receptors for these sensations are often located in organs such as nose, eyes, ears, tongue, etc.
Third Order
Neuron
A sensory neuron that conducts nerve impulses, action potentials from the thalamus up to the somato-sebory cortex on the post-central gyrus of the parietal lobe. This is where the conscious perception of the sensation is elicited. TERM 17
Astereognosis
DEFINITION 17 the inability to judge the shape/forms of objects. TERM 18
Free Nerve
Endings
DEFINITION 18 found everywhere in the skin. can detect pain, temperature, itch, tickle, touch, pressure and stretch. others detect mechanical deformation. they are bare dendrites, not covered/noncapsulated. TERM 19
Encapsulated Nerve Ending
DEFINITION 19 are the dendrites of first order neurons found in non-hairy parts of the skin particularly the lips, fingertips, palms. They can detect well developed touch, pressure and vibrations. TERM 20
Separate Cells
DEFINITION 20 synapse with first order neurons located in sense organs; the hair cells in the ears, the rods and cones in the retina and gustatory receptor cells for taste on the taste buds.
exteroreceptors
located at or near the body surface. Provide info about external environment such as hearing, vision, smell, taste, touch, pressure, vibration, pain, & temperature. TERM 22
Interoceptors or Visceroreceptors
DEFINITION 22 located in blood vessels and the viscera. provide info about internal environment. TERM 23
Proprioceptors or Stretch Receptors
DEFINITION 23 located in muscles, tendons, joints, and the internal ear and are stimulated by stretching or movement. They provide information about body position, muscle tension, joint position, & equilibrium.
