Javier stepped on a splinter while walking barefoot. The splinter pierced deep into his foot and caused him a great amount of pain. Describe the pathway of pain sensation from the appropriate tract in the spinal cord into the brain where perception
occurs.
What will be an ideal response?
The stimulus travels via the spinothalamic tracts within the anterolateral system of the spinal cord to the thalamus (brainstem). The thalamus relays pain stimuli to multiple parts of the brain, including S1 and S2, where the sensory discriminative (location, intensity, quality) aspects of pain are perceived and analyzed. Stimuli are also sent to the basal nuclei, hypothalamus, limbic system, and prefrontal cortex, where emotional, behavioral, and other aspects of pain are processed.
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When our brains process visual information about objects directly in front of us, they are able to use information that compares signals from the two eyes (steroscopic vision) in order to provide
A. color perception. B. brightness levels. C. depth perception. D. motion detection.
Describe location and general functions of the limbic system
What will be an ideal response?
Tight junctions between ________ are responsible for the formation of the blood-testis barrier.
A. Sertoli cells B. spermatogonial cells C. trophoblast cells D. Leydig cells
The sympathetic division of the ANS has
A. long postganglionic axons. B. preganglionic neuron cell bodies in the T1-L2 regions of the spinal cord. C. norepinephrine as a transmitter substance. D. Two of the choices are correct. E. All of the choices are correct.