动物学2（Zoology 2）.docVIP

动物学2（Zoology 2） The development of an amniotic cavity surrounded by the amniotic membrane around the embryo until the gastrula stage of the embryo. The cavity is filled with amniotic fluid, creating a water environment for the development of the embryo. The zygote develops initially in the fallopian tube of the mother and lays the stage of organ formation when the egg is laid, and the fetus is born and perfected shortly after the egg is born. New brain skin: from reptiles, the cerebral cortex, which is made of gray matter, is called the new cortex. It has the function of analyzing, synthesizing and releasing information, and can sense all the senses except smell. It is a center of higher nervous activity. Molt: because of the keratinization of the epidermis, the scales of reptiles must be removed periodically to fit the growth of the body, forming regular peeling patterns. Temporal foramen: a temporal arch formed by a bony bone around the head of both sides of the skull. Temporal temporal muscles formed temporal fossa. The temporal, temporal and masticatory muscles are involved in the effective mastication of the masticatory muscles. Thoracic and abdominal breathing -- Based on external intercostal muscle contraction, lift ribs, expand the chest, inhalation of air into the lungs; when the internal intercostal muscle contraction, rib traction can be decreased, pleural narrowing, air exhaled from the lungs. The eggs wrapped with amniotic eggs egg membrane (membrane protein, shell membrane and egg shell) amniotic eggs during development, not only the formation of amnion, chorion, also formed a series of embryo chorioallantoic membrane membrane, which is a common characteristic of amniotic membrane animal. The significance of amniotic eggs enables reptiles to reproduce from water, thus creating conditions for reptiles to adapt themselves to the arid areas and adapt themselves to new life through adaptation to radiation. Reptiles produce amniotic eggs (a key structure fo