Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
Chapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, and Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2d the peripheral nervous system (PNS). which includes the cranial nerves, arising from the brain, ami the spinal nenes and ganglia, arising from the spinal cord (tig. 9.1). The autonomic nervous system (ANS) is a functionally distinct division of the nervous system devoted to regulation of involunta Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2ry activities in the body. The ANS is nude up of specific portions of the CNS and PNS.The- brain and spinal cord are the centers for integration and cEbook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
oordination of information. Conveyed as nerve impulses, information to and from the brain and spinal cord trawls through nerves. Nerves are similar toChapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, and Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2h then translate the signal into some specific function?For example, the motor impulses conducted from the brain to the muscles of the forearm that serve the hand cause the fingers to mow as the muscles are contracted. Sensory nerves conduct action potentials (nerve impulses) in the opposite directi Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2on-froin the receptor site to the CNS. For example, a pinprick on the skin produces a sensory impulse along a sensory nerve that the brain interpretsEbook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
as a painful sensation.Figure 9.1 The divisions of the nervous systemNeurons and neuroglia are the two cell types that make up nervous tissue. NeuronsChapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, and Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2ough neurons vary considerably in size and shape, they haw three principal components: a cell body, dendrites, and an axon (fig. 9.3). In a typical neuron connection, the axon of one neuron synapses (joins) on the cell body or dendrites of a neighboring neuron. Axons vary in length from a few millim Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2eters in the CNS to over a meter in the I’NS. Long axons are generally myelinated with Schwann cells (neurolemmocytes) in the i’NS. and many of the shEbook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
ort axons are myelinated with oligodendrocytes in the CNS. Neuroflbril nodes (nodes of Ranvier) are segments in the myelin sheath. The end of the axonChapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, and Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2The structure of a mycliiMtcd neuron.A Photographic Atlas for the Anatomy and Physiology LaboratoryFigure 9.7 A sectioned cranium exposing tlx: meningesand cerebrum.1 < '.ercbral gyrus2Arachnoid3Dun mater4Cerebral medulla (white matter)s. Cerebral cortexFigure 9.8 The relationship of the meninges to Ebook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2 the skull andthe cerebrum. ■1Subdural space2Subarachnoid space3Super sagittal sinus4 Arachnoid granulation5. Falx cerebri6Skin of scalp7Periosteum8BoEbook A photographic atlas anatomy and physiology for the laboratory (7th edition): Part 2
ne of cranium9Periosteal layer 1U. Meningeal layer11 Arachnoid mater 12. Pia mater13Blood vessel14Dura materFigure 9.9 A lateral view of the brain.1PrChapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, andChapter 9Nervous SystemThe nervous system is anatomically divided into the central nervous system (CNS), which includes the brain and spinal cord, andGọi ngay
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