此外，中脑顶盖接受多方面的神经纤维，所以它不仅是视、听反射的中枢，还可能是触觉、温度觉、痛觉的整合中枢。第六脑室sixth ventricle 又称Verga腔，位于穹窿连合与胼胝体间的一个水平裂隙，不恒定，当它与侧脑室相通时即称为第六脑室。丘脑是间脑中zui大的卵圆形灰质核团，位于第三脑室的两侧，左、右丘脑借灰质团块（称中间块）相连。由前脑泡的后部分化而成的高级中枢。位于中脑和大脑半球之间，左右各一，包埋在大脑两半球内，外侧以内囊与大脑的纹状体相隔。左右间脑之间的腔隙为第三脑室，其底部与脑下垂体连接，后上部有松果腺。背侧丘脑不仅是感觉的转换站，也是一个复杂的分析整合中枢；下丘脑是较高级的调节内脏及内分泌活动的中枢。位于第三脑室顶部周围，包括丘脑髓纹、缰核和松果腺。前两者属边缘系统，松果腺为内分泌器官。上丘脑与嗅觉、视觉有密切关系。下丘脑是自主神经系统在大脑皮层下的重要神经中枢，它调节着内脏系统的活动。底丘脑调节肌张力，使运动能够正常进行。丘脑不仅是除嗅觉外一切感觉冲动传向大脑皮层的转换站，而且是重要的感觉整合机构之一。丘脑在维持和调节意识状态、警觉和注意力方面也起重要作用。丘脑不仅与一般和特殊型式的激醒有关，而且和情绪联想有关。某些丘脑核团还可作为运动整合中枢，它接受小脑和纹状体的投射纤维。①感觉中继核。接受特异性感觉的投射纤维，经过转换后再投射到大脑皮层特定感觉区。此核包括腹后核及内侧膝状体和外侧膝状体。腹后核是躯体感觉传入系统中传导精细触觉和位置觉的内侧丘系，传导肢体和躯干痛、温觉和一般触觉的脊丘系及传导头面部痛、温觉的三叉丘系的终止点（见神经通路）。然后，再由此核发出纤维至皮层中央后回皮层躯体感觉区。内侧膝状体是听觉通路上的转换站，其传入纤维主要来自中脑的下丘；其投射纤维至听皮层。
In addition, the midbrain canopy accommodates a wide range of nerve fibers, so it is not only the center of visual and auditory reflexes, but also the center of tactile, temperature and pain sensation. Sixth ventricle Sixty ventricle, also known as Verga cavity, located in the crevicular junction and the corpus callosum between a horizontal cleft, not constant, when it communicates with the lateral ventricle that is called the sixth ventricle. The thalamus is the largest ovoid gray matter nucleus in the diencephalon and is located on both sides of the third ventricle. The left and right thalamus are connected by grey masses (called middle blocks). From the rear of the anterior segment of the brain into a senior center. Located between the midbrain and the cerebral hemispheres, about one each, embedded in the two hemispheres of the brain, lateral to the internal capsule and the striatum of the brain separated. The luminal space between the left and right brains is the third ventricle with the bottom connected to the pituitary gland and the pineal gland at the upper rear. Dorsal thalamus is not only a sensory conversion station, but also a complex analysis of the integration center; the hypothalamus is a higher level of regulation of visceral and endocrine activity in the center. Located around the top of the third ventricle, including thalamus, nucleus and pineal glands. The first two belong to the limbic system, the pineal gland is an endocrine organ. The hypothalamus and the smell, the visual is closely related. The hypothalamus is an important nerve center of the autonomic nervous system under the cerebral cortex, which regulates visceral system activity. Medial hypothalamic muscle tone, so that exercise can be normal. The thalamus is not only a transfer station for all sensory impulses other than the sense of smell to the cerebral cortex, but also an important sensory integration mechanism. Thalamus also plays an important role in maintaining and regulating the state of consciousness, vigilance and attention. Thalamus not only with the general and special type of wake-up, but also with emotional associations. Some thalamic nuclei can also be used as a motor center, which accepts projection fibers from the cerebellum and the striatum. ① feeling relay core. Specially sensitized projection fibers are converted and projected onto specific areas of the cerebral cortex. This nucleus includes the posterior nucleus and medial geniculate and lateral geniculate bodies. The posterior nucleus is the medial mound of the somatosensory afferent system that conducts fine tactile and positional sensations, the conduction of limbs and trunk pain, the thermal sensation and general tactile crestal system and the conduction head facial pain, the termination of the trigeminosis of the warm sensation Point (see neural pathway). Then, after that, the core sends the fiber to the cortical somatosensory area. The medial geniculate body is a conversion station on the auditory pathway, with afferent fibers predominantly coming from the inferior midvation of the midbrain; it projects fibers to the auditory cortex.

上一篇：广州创仑鲍特氏菌、百日咳菌培养血清检测技术

下一篇：COT-mAb胶体金抗体

返回列表>>

广州健仑生物科技有限公司(www.itexamtime.com) 热门产品:喹诺酮类检测试剂盒,西尼罗河检测试剂,基孔肯雅热试剂,寨卡检测试剂,疫病核酸试剂
地址：广东省广州市番禺区石楼镇清华科技园创启路63号A2栋101 Email：service@jianlun.com
ICP备：粤ICP备11063766号 GoogleSitemap 技术支持：化工仪器网管理登陆返回首页