Review Article Cerebral Venous System Anatomy
... of Cerebral Venous Thrombosis The cerebral veins and sinuses neither have valves nor tunica muscularis. Because they lack valves, blood flow is possible in different directions. Moreover, the cortical veins are linked by numerous anastamoses, allowing the development of a collateral circulation and ...
... of Cerebral Venous Thrombosis The cerebral veins and sinuses neither have valves nor tunica muscularis. Because they lack valves, blood flow is possible in different directions. Moreover, the cortical veins are linked by numerous anastamoses, allowing the development of a collateral circulation and ...
Artery Vein - Stephen Tavoni
... Notice that the NFP at the venous interstitial fluid “pulls” end is a negative number. This fluid out of capillary. means that reabsorption, not filtration, is occurring and so fluid moves from the interstitial space into the capillary. ...
... Notice that the NFP at the venous interstitial fluid “pulls” end is a negative number. This fluid out of capillary. means that reabsorption, not filtration, is occurring and so fluid moves from the interstitial space into the capillary. ...
Pdf - McMed International
... dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. The tiny blood vessels derived from the blood islands in the 3rd and 4th week of development merge with each other forming a continuous network of fine vessels. N ...
... dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. The tiny blood vessels derived from the blood islands in the 3rd and 4th week of development merge with each other forming a continuous network of fine vessels. N ...
The surgical anatomy of the blood supply to the femoral head
... been described for at least 100 years.4 However, the surgical implications have only recently been considered. In the 1918 edition of Gray’s Anatomy,4 anastomotic connections were described between the internal and external iliac systems through the medial femoral circumflex and the inferior arterie ...
... been described for at least 100 years.4 However, the surgical implications have only recently been considered. In the 1918 edition of Gray’s Anatomy,4 anastomotic connections were described between the internal and external iliac systems through the medial femoral circumflex and the inferior arterie ...
Research Paper Medical Science A case Report on Bilateral Variant
... The axis artery of the lower limb develops from the 5th lumbar intersegmental artery. The embryonic blood vessels acquire a plexiform appearance in the foot. The dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. ...
... The axis artery of the lower limb develops from the 5th lumbar intersegmental artery. The embryonic blood vessels acquire a plexiform appearance in the foot. The dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. ...
File
... ④teo kidneys may be occur on the same side. ⑤single or multiple congenital renal cysts may also be present. ...
... ④teo kidneys may be occur on the same side. ⑤single or multiple congenital renal cysts may also be present. ...
Vascularization of the penis of a man
... the penis, which on shears imitate cells of cavernous tissue, sequentially merge from small-sized in larger and leave from under crown on the back of the organ. These trunks also shape the head of penis veniplex, which lies between deep fascia of the penis and white of cavernous bodies. The quantity ...
... the penis, which on shears imitate cells of cavernous tissue, sequentially merge from small-sized in larger and leave from under crown on the back of the organ. These trunks also shape the head of penis veniplex, which lies between deep fascia of the penis and white of cavernous bodies. The quantity ...
Vascular Anatomy and Blood Supply to the Femoral Head
... cutting this ligament has no effect on the capital arterial pattern including the subfoveal part of the head. When the artery of the ligamentum teres was considered the only vessel supplying the femoral head, contrast medium was not taken up by the capital vessels in 35 % of specimens; another 35 % ...
... cutting this ligament has no effect on the capital arterial pattern including the subfoveal part of the head. When the artery of the ligamentum teres was considered the only vessel supplying the femoral head, contrast medium was not taken up by the capital vessels in 35 % of specimens; another 35 % ...
Branch
... thyroid cartilage, and, gaking a slightly curved course, passes upwards and forwards, and then inclines backwards to a point behind the neck of mandible, where, in the substance of the parotid gland, it divides into the superficial temporal and maxillary arteries. ...
... thyroid cartilage, and, gaking a slightly curved course, passes upwards and forwards, and then inclines backwards to a point behind the neck of mandible, where, in the substance of the parotid gland, it divides into the superficial temporal and maxillary arteries. ...
A case Report on Unusual Termination of Anterior Tibial Artery
... lumbar intersegmental artery. The embryonic blood vessels acquire a plexiform appearance in the foot. The dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. The tiny blood vessels derived from the blood ...
... lumbar intersegmental artery. The embryonic blood vessels acquire a plexiform appearance in the foot. The dorsalis pedis artery is a constant embryonic vessel that plays an important role in the normal arterial morphogenesis of the lower limb. The tiny blood vessels derived from the blood ...
A Segmental Hypoplastic Anterior Tibial Artery Coexisting
... percutaneous trans-arterial catheterization, among others. A thorough knowledge of infrapopliteal branching most especially their pathways and luminal diameters are important to surgeons in selecting appropriate surgical interventions or procedures. We report the case in which one of the 3 terminal ...
... percutaneous trans-arterial catheterization, among others. A thorough knowledge of infrapopliteal branching most especially their pathways and luminal diameters are important to surgeons in selecting appropriate surgical interventions or procedures. We report the case in which one of the 3 terminal ...
PDF - Anatomy Journal of Africa
... described by Mooney (2009) and Harper (2013), was applicable to the branching of the DPA, the diameter of the first branch (continuation of the dorsal pedal artery) was compared to the second branch (lateral tarsal artery). On the left, the diameter of the continuing DPA was measured at 3.29mm ± 0.2 ...
... described by Mooney (2009) and Harper (2013), was applicable to the branching of the DPA, the diameter of the first branch (continuation of the dorsal pedal artery) was compared to the second branch (lateral tarsal artery). On the left, the diameter of the continuing DPA was measured at 3.29mm ± 0.2 ...
An Orbital Arteriovenous Malformation in a Patient with Origin of the
... time. In its earlier stages it is like that of the rabbit, which has been well described by Fuchs (6). Whereas the primitive caroticobasilar arteries have regressed at the latest by the 12 mm stage, development of the ophthalmic artery continues almost up to the 40 mm stage, the hyaloid artery being ...
... time. In its earlier stages it is like that of the rabbit, which has been well described by Fuchs (6). Whereas the primitive caroticobasilar arteries have regressed at the latest by the 12 mm stage, development of the ophthalmic artery continues almost up to the 40 mm stage, the hyaloid artery being ...
intestine rectum aorta vena cava
... • Is the longest part of the gastrointesAnal tract - length of 5 metres (3–7 metres) in the living adult • Consists of the duodenum, jejunum, and ileum • Extends from the pyloric opening to the ileocecal juncAon • Is the locaAon of complete digesAon and absorpAon of most of the products of ...
... • Is the longest part of the gastrointesAnal tract - length of 5 metres (3–7 metres) in the living adult • Consists of the duodenum, jejunum, and ileum • Extends from the pyloric opening to the ileocecal juncAon • Is the locaAon of complete digesAon and absorpAon of most of the products of ...
chapter 23-Vessels and Circulation
... • Tunica media in arteries – thickest layer; mostly smooth muscle – enables vasoconstriction and ...
... • Tunica media in arteries – thickest layer; mostly smooth muscle – enables vasoconstriction and ...
variations in the arterial branching pattern of the coeliac trunk
... common hepatic arteries.[2] The most common form of the CT is tripodal. According to Michels, this tripodal form occurs in 55% of individuals.[3] Van Damme and Bonte reported that this form occurs in 86% of individuals.[4] The trifurcation of CT was first described by Haller in 1756. This “Tripus Ha ...
... common hepatic arteries.[2] The most common form of the CT is tripodal. According to Michels, this tripodal form occurs in 55% of individuals.[3] Van Damme and Bonte reported that this form occurs in 86% of individuals.[4] The trifurcation of CT was first described by Haller in 1756. This “Tripus Ha ...
Radial secondary growth and formation of successive cambia and
... The cortex consists of discontinuous bands of perivascular fibres, large thin-walled parenchyma cells, secretory structures, and druse-containing cells. A second ring of cambium develops from the axial parenchyma cells at a distance of about three to six cell layers outside the phloem produced by th ...
... The cortex consists of discontinuous bands of perivascular fibres, large thin-walled parenchyma cells, secretory structures, and druse-containing cells. A second ring of cambium develops from the axial parenchyma cells at a distance of about three to six cell layers outside the phloem produced by th ...
Anatomical variants of the emissary veins
... of normal calibre were observed on the left side (Fig. 3). Additionally, aplasia of the sigmoid sinus and development of the PSS were revealed on the contralateral side (Fig. 2). The leading emissary veins are elaborate on the supra, middle, and inferior thirds of the sigmoid sinus. Thus the triplet ...
... of normal calibre were observed on the left side (Fig. 3). Additionally, aplasia of the sigmoid sinus and development of the PSS were revealed on the contralateral side (Fig. 2). The leading emissary veins are elaborate on the supra, middle, and inferior thirds of the sigmoid sinus. Thus the triplet ...
Accessory middle cerebral artery
... fenestrations, duplications and persistent fetal arteries is important for a correct diagnosis and management of many cases of stroke and subarachnoid hemorrhage and may also aid in surgical planning. The most common arterial variants are detailed below. However, the high number of variants and asym ...
... fenestrations, duplications and persistent fetal arteries is important for a correct diagnosis and management of many cases of stroke and subarachnoid hemorrhage and may also aid in surgical planning. The most common arterial variants are detailed below. However, the high number of variants and asym ...
Cerebral venous system
... • The distribution of the superficial cortical veins is not as irregular and variable as is generally supposed, and their examination during the venous phase of the cerebral angiogram may prove helpful in localizing expanding lesions by revealing poor filling and displacement and alteration in the d ...
... • The distribution of the superficial cortical veins is not as irregular and variable as is generally supposed, and their examination during the venous phase of the cerebral angiogram may prove helpful in localizing expanding lesions by revealing poor filling and displacement and alteration in the d ...
1 3 Blood Supply to the Head and Neck The nutrients and oxygen
... The nutrients and oxygen necessary to sustain life are carried to all the cells of all of the tissues by the arteries. Veins and lymphatics pick up the waste products of cell metabolism and, together with deoxygenated red blood cells, return them to various areas. The blood is then rejuvenated and r ...
... The nutrients and oxygen necessary to sustain life are carried to all the cells of all of the tissues by the arteries. Veins and lymphatics pick up the waste products of cell metabolism and, together with deoxygenated red blood cells, return them to various areas. The blood is then rejuvenated and r ...
Major arteries of the body
... At the end of the lecture, the student should be able to: Define the word ‘artery’ and understand the general principles of the arterial system. Define arterial anastomosis and describe its significance. Define end arteries and give examples. Describe the aorta and its divisions & list the branches ...
... At the end of the lecture, the student should be able to: Define the word ‘artery’ and understand the general principles of the arterial system. Define arterial anastomosis and describe its significance. Define end arteries and give examples. Describe the aorta and its divisions & list the branches ...
An Unusual Branch of Celiac Trunk Feeding Suprarenal Gland
... During routine dissection, variation in branching pattern of coeliac trunk has been observed in adult 54-year-old male cadaver. Instead of normal three branches an additional branch i.e., Left inferior phrenic artery originated from it as fourth branch. Then it divided into two branches, one directl ...
... During routine dissection, variation in branching pattern of coeliac trunk has been observed in adult 54-year-old male cadaver. Instead of normal three branches an additional branch i.e., Left inferior phrenic artery originated from it as fourth branch. Then it divided into two branches, one directl ...
Viktor`s Notes * Cerebral Venous Thrombosis
... – obstruction of cortical veins (e.g. vein of Labbe) can produce significant damage. – although unusual, cortical vein thrombosis may be seen in absence of dural sinus involvement. back-transmission of high pressure into capillary bed usually results in significant hemorrhagic component. SAH also ma ...
... – obstruction of cortical veins (e.g. vein of Labbe) can produce significant damage. – although unusual, cortical vein thrombosis may be seen in absence of dural sinus involvement. back-transmission of high pressure into capillary bed usually results in significant hemorrhagic component. SAH also ma ...
Vascular remodelling in the embryo
Vascular remodelling is a process which begins at day 21 of human embryogenesis, when an immature heart begins contracting, pushing fluid through the early vasculature. This first passage of fluid initiates a signal cascade based on physical cues including shear stress and circumferential stress, which is necessary for the remodelling of the vascular network, arterial-venous identity, angiogenesis, and the regulation of genes through mechanotransduction. This embryonic process is necessary for the future stability of the mature vascular network.Vasculogenesis is the initial establishment of the components of the blood vessel network, or vascular tree. This is dictated by genetic factors and has no inherent function other than to lay down the preliminary outline of the circulatory system. Once fluid flow begins, biomechanical and hemodynamic inputs are applied to the system set up by vasculogenesis, and the active remodelling process can begin.Physical cues such as pressure, velocity, flow patterns, and shear stress are known to act on the vascular network in a number of ways, including branching morphogenesis, enlargement of vessels in high-flow areas, angiogenesis, and the development of vein valves. The mechanotransduction of these physical cues to endothelial and smooth muscle cells in the vascular wall can also trigger the promotion or repression of certain genes which are responsible for vasodilation, cell alignment, and other shear stress-mitigating factors. This relationship between genetics and environment is not clearly understood, but researchers are attempting to clarify it by combining reliable genetic techniques, such as genetically-ablated model organisms and tissues, with new technologies developed to measure and track flow patterns, velocity profiles, and pressure fluctuations in vivo.Both in vivo study and modelling are necessary tools to understand this complex process. Vascular remodelling is pertinent to wound healing and proper integration of tissue grafts and organ donations. Promoting an active remodelling process in some cases could help patients recover faster and retain functional use of donated tissues. However, outside of wound healing, chronic vascular remodelling in the adult is often symptomatic of cardiovascular disease. Thus, increased understanding of this biomedical phenomenon could aid in the development of therapeutics or preventative measures to combat diseases such as atherosclerosis.