生物必修二第二章试题(国外英文资料).docVIP

生物必修二第二章试题 Chapter 2 regulation of animal and human life activities Section 1 is mediated through the nervous system A new knowledge is made before class target Combined with the teaching material P17, the structural integrity and function of the reflected arc are obtained. Comparative analysis of the conduction of nerve impulses in nerve fibers and the transmission process and characteristics between neurons. Combine life examples to understand the advanced functions and levels of the human brain. Self preparation The structural basis and reflection of neuromodulation Reflection: is the basic way of neuromodulation, refers to under the participation, the animal or human body to make; Reflected arc: the structural basis of neuromodulation. Thinking in a gland as the effector reflex arc, if efferent nerve damage, other parts of the normal, receptor stimulation, can the normal gland secretion? Second, the conduction of excitation on nerve fiber Excited: refers to the animal body or some tissue in the body, such as nerve tissue or cell feeling after stimulation, from state to state. 2. The nerve impulse: nerve is stimulated system, generate excitement, then along the nerve fibers in the form of conduction, this is also called a nerve impulse. 3. The conduction mechanism Due to differences in the cells inside and outside ion and different carrier and channel on the cell membrane, causing cell membrane potential appeared in the process of excited by inside outside the negative is the change of inside outside is negative. Three, excited between neurons 1. The structure foundation 2. Other structures D. e. f. g.. 3. The delivery process One-way communication Neurotransmitters that exist only in the presynaptic membrane, only by releasing, then work on, so excited transfer between neurons is one direction only. Thinking: when a presynaptic membrane of neurons spread to the next release of neurotransmitters neurons postsynaptic membrane, whether will cause the next neuron e