Nerve05/disorders of the spinal cord and optic pathway/ascending pathway of deep and touch sensation
深部覚・触圧覚の伝導路では，後根から脊髄に入ると，シナプスを形成せずに，第１次感覚神経線維が後索を延髄まで上行します．この上行路を後索路とよびます．延髄で第２次感覚神経細胞体にシナプスを形成し，第２次感覚神経線維が延髄で左右の正中線を交叉します．
Challenge Quiz
関節,筋肉などの深部覚は 皮質脊髄路(錐体路). 脊髄視床路.後索路 を通る.
皮膚の触圧覚は 皮質脊髄路(錐体路). 脊髄視床路.後索路 を通る.
関節,筋肉などの深部感覚は脊髄の 前索. 側索.後索 を通る.
皮膚の触圧覚は脊髄の 前索. 側索.後索 を通る.
関節,筋肉などの深部感覚の上行路で脊髄を上行するのは,第 1. 2. 3 次感覚神経である.
皮膚の触圧覚の上行路で脊髄を上行するのは,第 1. 2. 3 次感覚神経である.
For deep sensation from joints and muscles, the pathway enters the spinal cord from the anterior.posterior root, does.does not synapse immediately afterwards, and ascends the spinothalamic tract.posterior column-medial lemniscus pathway. corticospinal tract (pyramidal tract) of the same. opposite side of the spinal cord, synapse in the medulla oblongata. hypothalamus , ascend the same side.cross to the other side , synapse in the thalamus. hypothalamus , travel through basal ganglia.internal capsule. limbic system , and reach the primary somatosensory cortex. primary motor cortex in the precentral gyrus.postcentral gyrus in the frontal. temporal.parietal. occipital lobe.
For touch/pressure sensation of the skin, the pathway enters the spinal cord from the anterior.posterior root, does.does not synapse immediately afterwards, and ascends the spinothalamic tract.posterior column-medial lemniscus pathway. corticospinal tract (pyramidal tract) of the same. opposite side of the spinal cord, synapse in the medulla oblongata. hypothalamus , ascend the same side.cross to the other side , synapse in the thalamus. hypothalamus , travel through basal ganglia.internal capsule. limbic system , and reach the primary somatosensory cortex. primary motor cortex in the precentral gyrus.postcentral gyrus in the frontal. temporal.parietal. occipital lobe.