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Which statement best reflects the evolutionary advantage of sensory adaptation?


A) It prevents fatigue of sensory receptors.
B) It prevents the constant excitation of the hairs of your skin by your clothing.
C) It prevents the nervous system from being overwhelmed by stimuli that offer very little information about the world.
D) It allows the brain to reassign sensory cortex in people who lose a limb.

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What is meant by "sensory adaptation," and what is its evolutionary significance?

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Sensory adaptation refers to the process...

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The _______ seems to be important in the initiation of movement sequences.


A) SMA
B) premotor cortex
C) M1
D) cerebellum

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Which statement about the receptive field of a sensory neuron on skin is true?


A) All receptive fields of sensory nerves are excitatory.
B) Receptive fields of sensory neurons have a characteristic shape with excitatory and inhibitory regions.
C) Receptive fields of sensory neurons differ in size and shape, but all respond to the same type and quality of stimulation.
D) Receptive fields of skin sensory neurons are either excitatory or inhibitory.

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According to the McGill Pain Questionnaire, describing a "shooting" pain in your arm uses which dimension(s) of pain?


A) Motivational-affective
B) Cognitive-evaluative
C) Sensory-discriminative
D) Situational-interpretive

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Describe the biological value of information suppression and the ways it is achieved by the nervous system.

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The biological value of information supp...

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Which body part is not highly represented on the sensory homunculus?


A) Fingers
B) Lips
C) Hands
D) Eyes

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Which receptor types would be most useful for reading Braille?


A) Pacinian corpuscles
B) Free nerve endings
C) Ruffini corpuscles
D) Merkel's discs

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According to the concept of _______, particular nerve cells in the brain recognize sensory information that is specific to only particular types of information.

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Which statement about the primary motor cortex is false?


A) It is a major source of axons that form the pyramidal tract.
B) Many M1 cells have directional sensitivity.
C) Cortical maps of M1 show plasticity, changing with experience
D) It occupies a large part of the upper medulla.

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The pain control procedure in TENS is based on


A) mechanical stimulation of the skin.
B) electrical stimulation of the skin.
C) the administration of drugs.
D) hypnotic suggestion and placebo effect.

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Write a short paragraph using the following terms: opiates; endorphins, pain relief; TENS; placebo; acupuncture; naloxone.

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Afferent fibers from the periphery that carry nociceptive information terminate on neurons in the


A) dorsal horn cells of the spinal cord.
B) medulla.
C) central brainstem.
D) ventral horn cells of the spinal cord.

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Mirror neurons are especially interesting to researchers because


A) they appear to trigger specific movements.
B) they fire when a monkey sees another monkey (or human) performing a simple movement previously performed by the monkey itself.
C) they might be part of a neural system for empathy.
D) All of the above

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Blocking _______ at the neuromuscular junction blocks a muscle _______.


A) norepinephrine; relaxation
B) dopamine; ataxia
C) acetylcholine; contraction
D) glutamate; tension

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List and discuss the function of each of the different types of receptor cells found in the skin. Why do receptor cells types differ across species?

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Information about pain and temperature in the anterolateral system crosses the midline at the level of the


A) cerebral cortex.
B) thalamus.
C) medulla.
D) spinal cord.

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Discuss the functional and anatomical distinctions between the pyramidal and extrapyramidal systems.

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The pyramidal and extrapyramidal systems...

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Receptors with the initials _______ respond very high temperatures but do not respond to capsaicin, the chemical that makes chili peppers spicy hot.

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Outline the pathway of pain and temperature information to the cingulate cortex.

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