EXP 3204 - Chapter 14 Quiz

Which of the following body parts has the lowest two-point threshold? A. Fingertips B. Palms C. Forehead D. Upper arm

A. Fingertips

Endorphins A. are morphine-like substances found in the body. B. are receptors that are stimulated by extreme temperature on the skin. C. the active agent in placebos. D. have no analgesic effects.

A. are morphine-like substances found in the body.

Neurons in the ventral posterior nucleus in the thalamus have A. center-surround receptive fields. B. ill-defined receptive fields. C. no receptive fields. D. grating-like receptive fields.

A. center-surround receptive fields.

When you try to identify a 3-D object by touch alone, and then are allowed to have control over your hand and finger movements, you are using A. passive touch. B. haptic perception. C. azimuth perception. D. magnification touch.

B. haptic perception.

Based on the finding that ________________, it is believed that endorphins are linked to pain relief. A. naloxene injections increase the analgesic effect of endorphins B. naloxene injections decrease the analgesic effect of endorphins and placebos C. cats are cute D. placebo injections increase the analgesic effects of endorphins

B. naloxene injections decrease the analgesic effect of endorphins and placebos

Moving your finger across a textured surface can produce vibrations that are interpreted as texture. These vibrations are defined as A. parietal cues. B. temporal cues. C. spatial cues. D. olfactory cues.

B. temporal cues.

The area on S1 associated with the thumb is as large as the area for the forearm. This is an example of A. sensory substitution. B. Braille projection. C. cortical magnification. D. the analgesic inversion principle.

C. cortical magnification.

Which of the following is an "exploratory procedure" identified by Lederman and Klatzky? A. Enclosure B. Pressure C. Contour following D. All of these are EPs.

D. All of these are EPs.

Pain subjective intensity: ____________:: Pain unpleasantness: __________________. A. Area S1; Area S2 B. real pain; the pain matrix C. the ACC; Area S2 D. Area S1; the ACC

D. Area S1; the ACC

Which of the following stimuli have been used to test tactile acuity? A. Gratings B. Letters C. Two-Point Stimuli D. Gratings, letters, and two-point stimuli have all been used

D. Gratings, letters, and two-point stimuli have all been used

The __________________ are located near the border of the epidermis and surface of the skin, and are associated with sensing fine details. A. Pacinian corpuscle B. Meissner corpuscles C. Ruffini cylinders D. Merkel receptors.

D. Merkel receptors.

Which of the following structures is not part of the pain matrix? A. amygdala B. insula C. ACC D. SEC

D. SEC

The function of the skin is A. warning the individual of of possible injury. B. preventing body fluids from escaping. C. protecting the organism from bacteria and chemical agents. D. all of these are functions of the skin.

D. all of these are functions of the skin.

The nerve fibers in the spinal cord go in A. the medial lemniscal pathway only. B. the spinothalamic pathway only. C. the genticulostriate pathway only. D. both the medial lemniscal pathway and the spinothalamic pathway.

D. both the medial lemniscal pathway and the spinothalamic pathway.

Sensory component of pain: ________:: emotional component of pain: __________. A. throbbing; dull B. annoying; sickening C. frightful; prickly D. throbbing; annoying

D. throbbing; annoying