1. What is a protective and complex phenomenon composed of sensory experiences (time,space, intensity), emotion, cognition, and motivation?:

Answer:

Pain

2. Portion of the nervous system responsible for sensation and perception of pain

can be divided into 3 areas:

Answer:

A: Afferent pathways B interpretive centersin the brainstem, midbrain &

diencephalon C: descending pathways from the brainto the dorsal horn of spinal

cord.

3. Nociceptors are pain receptors that detect a wide range ofstimuli and

respond to:

Answer:

Chemical, mechanical, and thermal stimulation

4. The afferent system is:

Answer:

Composed of nociceptors the dorsal horn of the spinal column (second-order

neurons) and afferent neurons in the A´and C fibers(first-order

neurons);spinothalamic tract (third-order neurons).

5. Myelinated A´receptor transmission is:

Answer:

Fast and conveys mechanical andthermal localized pain.

6. Unmyelinated polymodal C fiber transmission is:

Answer:

Slower and conveyssharp, diffuse burning and aching sensations