外周感受器

The sensibitity of central chemoreceptor to H＋is about 25 times of that of peripheral chemoreceptor.

中枢化学感受器对H＋的敏感性约为外周化学感受器的25倍。

The sensibitity to CO2 is higher than that to peripheral chemoreceptor.but the latent period of reaction to sudden change of PCO2 in the arterial blood is longer than that of the peripheral chemoreceptor.

c。 对CO2的敏感性却比外周化学感受器高，但它对动脉血中PCO2的突然改变所引起的反应的潜伏期却比外周感受器长。

Hypoxia stimulation act through peripheral chemoreceptor.if the inputing of peripheral chemoreceptor is cut, the stimulation effect disappear.

a。 缺氧刺激是通过外周化学感受器起作用的。若切断外周化学感受器的传入，其刺激作用完全消失。

The main pathway is acting directly on peripheral chemoreceptor and inputting impulse.respiration center is excited.

主要是直接作用于外周化学感受器，传入冲动。呼吸中枢呈兴奋作用。

In section of control of ventilation, students will learn respiration centers (medullary center, apneustic center, pneumotaxic center), and are required to master pulmonary stretch reflex (Hering-Breuer reflex), to understand other respiratory reflexes, to master the site and features of central chemoreceptor

了解节律性呼吸运动的起源。掌握肺牵张反射，了解其他呼吸反射。化学因素对呼吸活动的调节，掌握外周化学感受器与中枢化学敏感区的定位和功能特点，血液CO2、H+、O2浓度的变化对呼吸活动的影响及其作用机制。

The effective stimulating sites were indentified by defensive cardiovascular response and other components of defence reaction evoked by 3 s trains of rectangular cathodal pulses (100Hz, 0.5ms pulse duration, 70 -150μA intensity for dPAG and 150-250μA for PF) delivered from a programmed multichannel constant current stimulator. The responses included an increase in blood pressure and heart rate, pupillodilation and an increase in the rate and depth of respiration. Currents of 1Hz, intensity of 100- 150μA for dPAG and 200-250μA for PF were used to observe the effect of the stimulation of them on RVLM neurones. The deep peroneal nerve and superfacial deep peroneal nerve were carefully separated, and put on a pair of stimulating electrode respectively, Both nerves were stimulated with constant rectangular pulses of 1Hz, 0.5ms duration and 300μA current intensity to see their effects on RVLM neurones. The baro-and chemo-receptors were activated by the intravenous injection of phenylephrine or 0.208 M NaH2PO4. The degree of convergent inputs to individual RVLM neurone was studied by the stimulation of the sites mentioned above. It was found that neurones about 61.4%(27/44) and 35.3%(6/17) received convergent inputs from three and four places respectively.

过去的研究主要集中于整体水平，利用电刺激或化学刺激RVLM神经元，观察对血压、心率及交感活动的影响，并对影响心血管交感活动的神经递质进行了广泛探讨，积累了大量资料；在神经元水平，主要研究刺激脑内核团、外周神经、化学感受器及压力感受器等对RVLM神经元放电的影响和某些神经递质影响神经元活动的机制、然而，对RVLM神经元如何整合不同信息、其可能突触机制等研究得较少，本互作拟采用在体细胞内、细胞外记录电活动与微电泳，结合中枢核团及外周神经电刺激等方法，对RVLM神经元在不同状态下的整合作用规律与可能机制进行初步探讨，为进一步了解这一复杂的整合过程提供新的理论依据。

The pressor effect of adenosine was due to carotid body cheoreceptor activation. However, a slight increase of ABP induced by intracarotid bolus injection of adenosine following the section of carotid sinus nerves was observed in a few rats, which implied that the central effect might be involved in the pressor effect of adenosine. The delayed effect of adenosine may be attributed to the direct actions (including the negative chronotropic action, thenegative dromotropic action, the negative inotropic action and the vasodilator effect) of adenosine on the heart and blood vessels.

前一效应主要与颈动脉体化学感受器的激活有关，但在少数动物，颈动脉内注射腺苷的升压效应在切除窦神经后并未完全消除，表明腺苷有可能进入神经中枢而发挥作用；后一效应可能由腺苷直接作用于心脏和血管，通过其负性变力、变时、变传导和血管扩张等作用，导致心脏自律性降低，输出量减少和外周阻力下降。

As the bridge between central nervous system and peripheral receptor or effector, peripheral nerve plays an important role in neurotransmission and neurotrophy.

周围神经作为联系中枢神经系统(central nervous system，CNS)与外周感受器或者效应器之间的桥梁，在神经传递、神经营养等方面发挥着重要作用。

All these data indicated that in small DRG neurons, VR1-involved peripheral mechanism plays an important role in activation of nociceptor and peripheral analgesia by neomycin.

研究提示VR1受体参与的外周机制在伤害性感受器的激活和新霉素的镇痛效应中可能起重要作用。

In the central, 5-HT can induce the release of inhibitory neurotransmitter γ-aminobutyric acid etc. through 5-HT2A receptor resulting in analgesia. In the peripheral, 5-HT can active the nociceptor and advance the traumatic information transmission.

在中枢可以通过2A受体引起抑制性神经递质γ-丁氨酸等的释放，从而发挥镇痛作用；在外周参与伤害性感受器的活化，促进伤害性信息的传递。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。