Ebook Cardiovascular physiology (8th edition): Part 2
➤ Gửi thông báo lỗi ⚠️ Báo cáo tài liệu vi phạmNội dung chi tiết: Ebook Cardiovascular physiology (8th edition): Part 2
Ebook Cardiovascular physiology (8th edition): Part 2
Vascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2h muscle differs anatomically and functionally from striated muscle.►Lists the steps leading to cross-bridge cycling in smooth muscle.►Lists the major ion channels involved in the regulation of membrane potential in smooth muscle.►Describes the processes of electromechanical and pharmacomechanical c Ebook Cardiovascular physiology (8th edition): Part 2oupling in smooth muscle.►Defines basal tone.►Lists several substances potentially involved in local metabolic control.►States the local metabolic vasEbook Cardiovascular physiology (8th edition): Part 2
odilator hypothesis.►Describes how vascular tone may be influenced by endothelin, prostaglandins, histamine, and bradykinin.►Describes the myogenic reVascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2riefly describes the metabolic, myogenic, and tissue pressure theories of autoregulation.►Defines neurogenic tone of vascular muscle and describes how sympathetic neural influences can alter it.►Describes how vascular tone is influenced by circulating catecholamines, vasopressin, and angiotensin II. Ebook Cardiovascular physiology (8th edition): Part 2►Lists the major influences on venous diameters.►Describes how control of flow differs between organs with strong local metabolic control of arteriolaEbook Cardiovascular physiology (8th edition): Part 2
r tone and organs with strong neurogenic control of arteriolar tone.The student knows the dominant mechanisms of flow and blood volume control in the Vascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2ates its relative importance to blood flow in the endocardial and epicardial regions of the right and left ventricular walls.►Describes the majormechanisms of flow and blood volume control in each of the following systemic organs: skeletal muscle, brain, splanchnicorgans, kidney, and skin.►States wh Ebook Cardiovascular physiology (8th edition): Part 2y mean pulmonary arterial pressure is lower than mean systemic arterial pressure.VASCULAR CONTROL / 127Because the body’s metabolic needs are continuaEbook Cardiovascular physiology (8th edition): Part 2
lly changing, the cardio-vascular system must continually make adjustments in the diameter of its vessels. The purposes of these vascular changes are Vascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2on of blood volume and cardiac filling (the job of veins). In this chapter, we discuss our current understanding of how all this is accomplished.VASCULAR SMOOTH MUSCLEAlthough long-term adaptations in vascular diameters may depend on remodeling of both the active (ie, smooth muscle) and passive (ie, Ebook Cardiovascular physiology (8th edition): Part 2 struc-tural, connective tissue) components of the vascular wall, short-term vascular diameter adjustments are made by regulating the contractile actiEbook Cardiovascular physiology (8th edition): Part 2
vity of vascular smooth muscle cells. These contractile cells are present in the walls of all vessels except capillaries. The task of the vascular smoVascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2lar smooth muscle must be able to sustain active tension for prolonged periods.There are many functional characteristics that distinguish smooth muscle from either skeletal or cardiac muscle. For example, when compared with these other muscle types, smooth muscle cells1contract and relax much more s Ebook Cardiovascular physiology (8th edition): Part 2lowly;2can change their contractile activity as a result of either action potentials or changes in resting membrane potential;3can change their contraEbook Cardiovascular physiology (8th edition): Part 2
ctile activity in the absence of any changes in membrane potential;4can maintain tension for prolonged periods at low energy cost; and5can be activateVascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smooth Ebook Cardiovascular physiology (8th edition): Part 2helical angles in muscular blood vessel walls. In many, but not all, vessels, adjacent smooth muscle cells are electrically connected by gap junctions similar to those found in the myocardium.Contractile ProcessesJust as in other muscle types, smooth muscle force development and shortening are thoug Ebook Cardiovascular physiology (8th edition): Part 2ht to be the result of cross-bridge interaction between thick and thin contractile filaments composed of myosin and actin, respectively. In smooth musEbook Cardiovascular physiology (8th edition): Part 2
cle, however, these filaments are not arrangedVascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smoothVascular ControlOBJECTIVESThe student understands the general mechanisms involved in local vascular control:►Identifies the major ways in which smoothGọi ngay
Chat zalo
Facebook