Ch12T1-6.txt

Senses with receptors widely distributed throughout the body, including skin, various organs, and joints.

Senses with more specialized receptors confined to structures in the head, such as the eyes and ears.

Explain the difference between general and special senses.

List the 5 types of sensory receptors.

What type of sensory receptor responds to changes in the concentration of chemicals?

What type of sensory receptor responds to tissue damage?

What type of sensory receptor responds to temperature change?

What type of sensory receptor has several types and responds to mechanical forces by detecting changes that deform the receptors?

What type of mechanoreceptor responds to changes in the tensions of muscles and tendons?

What type of mechanoreceptor responds to changes in blood pressure?

What type of mechanoreceptor responds to inflation of the lungs?

What type of sensory receptor responds to light energy intensity in the eyes?

Occurs when sensory neurons reach threshold and the resulting action potentials cause the brain to become aware of that sensory event.

Occurs when the brain interprets sensory impulses; is formed by the cerebral cortex.

Occurs when the cerebral cortex interprets a sensation to seem to come from the receptors being stimulated, and the brain projects the sensation back to its apparent source.

The ability to ignore unimportant stimuli. (ex: not thinking about background noise in a room)

Name the three groups of general senses.

Type of general senses associated with changes at the body surface; include senses of touch, pressure, temperature, and pain.

Type of general senses associated with changes in viscera.

Type of general senses associated with changes in muscles and tendons and in body position.

Name the three touch and pressure receptors.

Type of touch and pressure receptors found in epithelial tissues; responsible for the sensation of itching.

Type of touch and pressure receptors located in hairless portions of skin; involved in fine touch, as in distinguishing between two points on the skin.

Type of touch and pressure receptors located in deep subcutaneous tissues of some body parts; associated with heavier pressure, stretch, and vibrations.

Type of temperature receptors that respond to temperatures between 77° F and 113° F.

Type of temperature receptors that respond to temperatures between 50° F and 68° F.

Type of pain in organs resulting from the stimulation of mechanoreceptors and decreased blood flow with lower tissue oxygen levels and accumulation of pain stimulating chemicals.

Type of pain in which visceral pain may feel as if it is coming from some part of the body other than the part being stimulated; derived from common nerve pathways (ex: a heart attack may cause pain in the left shoulder).

Pain fibers that are myelinated; conduct impulses rapidly; associated with the sensation of sharp pain; sensed as coming from the surface.

Pain fibers that are unmyelinated; conduct impulses slowly; associated with dull, aching pain sensations; felt in deeper tissues and skin.