ANAT 321 Lecture Notes - Lecture 7: Spinothalamic Tract, Posterior Column, Pineal Gland
6 Nov 2020
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Midsagittal section of the brainstem medulla, the pons and the midbrain. Last lecture: melatonin is released by the pineal gland (no question on the exam on pineal gland), that"s involved in sleeping cycles. We"ve been following the somatosensory pathway from the periphery (skin surface) into the spinal cord 2 different pathways: the dorsal column and the anterolateral pathways. These has passed through the spinal cord, and they are now in the brainstem. We are going to look at sections of the brainstem to follow these 2 pathways. We can see in the slide a midsagittal section, so we"re gonna take sections through the brainstem and look inside and see what we see. We"re gonna start with a section that way back at the caudal limb. This cross section through the caudal medulla shows the dorsal column and anterolateral fiber tracts. This is right at the beginning of the brainstem, down here there is the spinal cord.
