Autonomic nervous system

The aims of the study "Characterising microbial and neuroimmune interactions in a mouse model of autism" are threefold: i) To characterize the influence of the R451C mutation on caecal enteric neuron organization; ii) To characterize the influence of the R451C mutation on caecal patch macrophage density and morphology; iii) To assess for alterations in gut microbes in different regions of the GI tract in the NL3R451C mouse model of autism.

83p runthenight04 02-02-2023 8 1   Download

Chapter 13 (part d) provides knowledge of motor endings and motor activity. In this chapter, students will be able to compare and contrast the motor endings of somatic and autonomic nerve fibers, outline the three levels of the motor hierarchy, compare the roles of the cerebellum and basal nuclei in controlling motor activity.

55p tangtuy07 02-04-2016 63 3   Download

Chapter 14 provides knowledge of the autonomic nervous system. In this chapter, you will learn to: Define autonomic nervous system and explain its relationship to the peripheral nervous system; compare the somatic and autonomic nervous systems relative to effectors, efferent pathways, and neurotransmitters released; compare and contrast the functions of the parasympathetic and sympathetic divisions;...

60p tangtuy07 02-04-2016 47 3   Download

The mammalian nervous system is relatively autonomous in lipid metabolism. In particular, Schwann cells in the peripheral nervous system, and oligodendrocytes and astrocytes in the central nervous system, are highly active in lipid synthesis.

9p vinaphone15 27-02-2013 44 3   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Neuronal degeneration in autonomic nervous system of Dystonia musculorum mice

10p toshiba23 18-11-2011 34 3   Download

Neurogenic shock is shock caused by the sudden loss of the autonomic nervous system signals to the smooth muscle in vessel walls. This can result from severe central nervous system (brain and spinal cord) damage. With the sudden loss of background sympathetic stimulation, the vessels suddenly relax resulting in a sudden decrease in peripheral vascular resistance (vasodilatation) and decreased blood pressure.

4p truongthiuyen1 09-06-2011 61 3   Download

Paraneoplastic Encephalomyelitis and Focal Encephalitis The term encephalomyelitis describes an inflammatory process with multifocal involvement of the nervous system, including brain, brainstem, cerebellum, and spinal cord. It is often associated with dorsal root ganglia and autonomic dysfunction. For any given patient, the clinical manifestations are determined by the area or areas predominantly involved, but pathology almost always reveals abnormalities (inflammatory infiltrates, neuronal loss, gliosis) beyond the symptomatic regions. ...

5p thanhongan 07-12-2010 94 4   Download

Physiology of the Female Sexual Response The female sexual response requires the presence of estrogens. A role for androgens is also likely but less well-established. In the CNS, estrogens and androgens work synergistically to enhance sexual arousal and response. A number of studies report enhanced libido in women during preovulatory phases of the menstrual cycle, suggesting that hormones involved in the ovulatory surge (e.g., estrogens) increase desire. Sexual motivation is heavily influenced by context, including the environment and partner factors.

5p ongxaemnumber1 29-11-2010 98 6   Download

Neurogenic Disorders that affect the sacral spinal cord or the autonomic fibers to the penis preclude nervous system relaxation of penile smooth muscle, thus leading to ED. In patients with spinal cord injury, the degree of ED depends on the completeness and level of the lesion. Patients with incomplete lesions or injuries to the upper part of the spinal cord are more likely to retain erectile capabilities than those with complete lesions or injuries to the lower part.

7p ongxaemnumber1 29-11-2010 65 6   Download

Neural Control The small intestine and colon have intrinsic and extrinsic innervation. The intrinsic innervation, also called the enteric nervous system, comprises myenteric, submucosal, and mucosal neuronal layers. The function of these layers is modulated by interneurons through the actions of neurotransmitter amines or peptides, including acetylcholine, vasoactive intestinal peptide (VIP), opioids, norepinephrine, serotonin, ATP, and nitric oxide. The myenteric plexus regulates smooth-muscle function, and the submucosal plexus affects secretion, absorption, and mucosal blood flow.

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Disorders of Vascular Tone or Blood Volume Disorders of vascular tone or blood volume that can cause syncope include the reflex syncopes and a number of conditions resulting in orthostatic intolerance. The reflex syncopes—including neurocardiogenic syncope, situational syncope, and carotid sinus hypersensitivity—share common autonomic nervous system pathophysiologic mechanisms: a cardioinhibitory component (e.g., bradycardia due to increased vagal activity), a vasodepressor component (e.g., inappropriate vasodilatation due to sympathetic withdrawal), or both.

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Thermoregulation Heat loss occurs through five mechanisms: radiation (55–65% of heat loss), conduction (10–15% of heat loss, but much greater in cold water), convection (increased in the wind), respiration, and evaporation (which are affected by the ambient temperature and the relative humidity). The preoptic anterior hypothalamus normally orchestrates thermoregulation (Chap. 17). The immediate defense of thermoneutrality is via the autonomic nervous system, whereas delayed control is mediated by the endocrine system.

6p ongxaemnumber1 29-11-2010 65 5   Download

Hệ thần kinh thực vật (Autonomic Nervous System) là để chỉ những cơ quan hệ thống trong cơ thể chịu sự chi phối của những bộ phận thần kinh hoạt động có tính chất tự động, không theo ý muốn của con người, như là hoạt động thần kinh của loài thực vật như hoạt động của tim, của cơ quan hô hấp, hệ tiêu hóa...

6p bunbo1 25-07-2010 103 19   Download