KHO THƯ VIỆN 🔎

Ebook Handbook of general anatomy (4/E): Part 2

➤  Gửi thông báo lỗi    ⚠️ Báo cáo tài liệu vi phạm

Loại tài liệu:     PDF
Số trang:         128 Trang
Tài liệu:           ✅  ĐÃ ĐƯỢC PHÊ DUYỆT
 













Nội dung chi tiết: Ebook Handbook of general anatomy (4/E): Part 2

Ebook Handbook of general anatomy (4/E): Part 2

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Ebook Handbook of general anatomy (4/E): Part 2ther voluntary' or involuntary, and adjusts the individual (organism) to the given surroundings.This is based on the special properties of sensitivity

, conductivity and responsiveness of the nervous system.The protoplasmic extensions of the nerve cells form the neural pathways called nerves. The ner Ebook Handbook of general anatomy (4/E): Part 2

ves resemble the electricity wires. Like the electric current flowing through the wires, the impulses (sensory and motor) are conducted through the ne

Ebook Handbook of general anatomy (4/E): Part 2

rves.The sensory' impulses arc transmitted by the sensory' (afferent) nerves from the periphery (skin, mucous membranes, muscles, tendons, joints, and

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Ebook Handbook of general anatomy (4/E): Part 2system to the periphery' (muscles and glands) (Fig. 7.1).Thus the CNS is kept continuously informed about the surroundings (environment) through vario

us sensory impulses, both general and special.The CNS in turn brings about necessary adjustment of the body byissuing appropriate orders which are pas Ebook Handbook of general anatomy (4/E): Part 2

sed on as motor impulses to the muscles, vessels, viscera and glands. The adjustment of the organism to the given surroundings is the most important f

Ebook Handbook of general anatomy (4/E): Part 2

unction of the nervous system, without which it will not be possible for the organism to survive.Parts of Nervous SystemThe nervous system is broadly

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Ebook Handbook of general anatomy (4/E): Part 2ven below.A. Central nervous system (CNS) includes:1Brain or encephalon, which occupies cranial cavity, and contains the higher governing centres (Fig

. 7.2).2Spinal cord or spinal medulla, which occupies upper two-thirds of the vertebral canal, and contains many reflex centres.Fig. 7.1: Afferent and Ebook Handbook of general anatomy (4/E): Part 2

efferent pathways through the spinal cordFig. 7.2: Brain and spinal cordB. Peripheral nervous system (PNS) is subdivided into the following two compo

Ebook Handbook of general anatomy (4/E): Part 2

nents.1Cerebrospinal nervous system is the somatic component of the peripheral nervous system, which includes 12 pairs of cranial nerves (Fig. 7.3) an

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Ebook Handbook of general anatomy (4/E): Part 2nctions.2Peripheral autonomic nervous system is the visceral component of the peripheral nervous system, which includes the visceral or splanchnic ner

ves that are connected to the CNS through the somatic nerves. It innervates the viscera, glands, blood vessels and nonstriated muscles, and mediates t Ebook Handbook of general anatomy (4/E): Part 2

he visceral functions.The cerebrospinal and autonomic nervous systems differ from each other in their efferent pathways. Table 7.1 shows comparison of

Ebook Handbook of general anatomy (4/E): Part 2

thetwo systems.Table 7.1. Comparison of cerebrospinal and peripheralautonomic nervous systemsCerebrospinal nervousPeripheral autonomic nervoussystems

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Ebook Handbook of general anatomy (4/E): Part 2preganglionic and postganglionic)organ (skeletal muscles)with an intervening ganglion for theNeuronrelay of the preganglionic fibre. The1 axoneffector

organ (viscera) are suppliedSkeletal muscleby the postganglionic fibreCELL TYPES OF NERVOUS SYSTEMThe nervous tissue is composed of two distinct type Ebook Handbook of general anatomy (4/E): Part 2

s of cells:

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

7Nervous SystemNervous system is the chief controlling and coordinating system of the body. It controls and regulates all activities of the body, whet

Gọi ngay
Chat zalo
Facebook