blood supply of stomach flowchart
Another approach that works well for many students is to create simple line drawings similar to the ones provided, labeling each of the major vessels. Before this division, the abdominal aorta gives rise to several important branches. Figure 18. When well distended, the normal gastric wall will have a thickness of 5-7 mm in the antrum and 2-3 mm in the body 17. It is located midsagittally between the meningeal and periosteal layers of the dura mater within the falx cerebri and, at first glance in images or models, can be mistaken for the subarachnoid space. The right ventricle of the heart pumps oxygen-depleted blood to the pulmonary arteries. It also receives branches from the inferior mesenteric vein, plus the splenic veins and all their tributaries. Churchill Livingstone. These include the superior and inferior sagittal sinuses, straight sinus, cavernous sinuses, left and right sinuses, the petrosal sinuses, and the occipital sinuses. Figure 12 show the distribution of the major systemic arteries in the lower limb. The external and internal iliac veins combine near the inferior portion of the sacroiliac joint to form the common iliac vein. The liver processes the blood from the portal system to remove certain wastes and excess nutrients, which are stored for later use. The posterior portion of the arterial circle is formed by a left and a right posterior communicating artery that branches from the posterior cerebral artery, which arises from the basilar artery. In colder weather, there is more constriction of the superficial veins and blood is diverted deeper where the body can retain more of the heat. For example, the left subclavian artery becomes the axillary artery as it passes through the body wall and into the axillary region, and then becomes the brachial artery as it flows from the axillary region into the upper arm (or brachium). is a flow chart … ADVERTISEMENT: Radiopaedia is free thanks to our supporters and advertisers. These pairs of vessels will be traced through only one side of the body. These parallel the vertebral arteries and travel through the transverse foramina of the cervical vertebrae. From the male reproductive organs, each testicular vein flows from the scrotum, forming a portion of the spermatic cord. The main regions of the aorta are the ascending aorta, aortic arch, and descending aorta, which is further divided into the thoracic and abdominal aorta. The locations of the arteries in the brain not only provide blood flow to the brain tissue but also prevent interruption in the flow of blood. (Seek additional content for more detail on cardiac circulation.). What arteries play the leading roles in supplying blood to the brain? Tongue Blood Supply ... Abdominal Aorta •It begins at the aortic hiatus of the diaphragm, anterior to the lower border of vertebra T7. As it passes through the body wall, it is renamed the femoral artery. As the femoral vein penetrates the body wall from the femoral portion of the upper limb, it becomes the external iliac vein, a large vein that drains blood from the leg to the common iliac vein. There is an anastomosis with the dorsalis pedis artery, and the medial and lateral plantar arteries form two arches called the dorsal arch (also called the arcuate arch) and the plantar arch, which provide blood to the remainder of the foot and toes. Table 6 summarizes the major branches of the abdominal aorta. (in Japanese). 13 (2): 81-7. The image, and table below defines the major arteries and veins of the pulmonary circuit discussed in the text. In many cases, there will be veins draining organs and regions of the body with the same name as the arteries that supplied these regions and the two often parallel one another. Tracing blood flow through arteries follows the current in the direction of blood flow, so that we move from the heart through the large arteries and into the smaller arteries to the capillaries. Major arteries serving the lower limb are shown in anterior and posterior views. The aortic arch descends toward the inferior portions of the body and ends at the level of the intervertebral disk between the fourth and fifth thoracic vertebrae. Since the blood has already passed through the systemic capillaries, it will be relatively low in oxygen concentration. It arises approximately 5 cm superior to the common iliac arteries. There is considerable, but not total, intermingling of the systemic and pulmonary blood at anastomoses in the smaller branches of the lungs. Arteries originating from the aorta ultimately distribute blood to virtually all tissues of the body. It is considerably shorter than a testicular artery, which ultimately travels outside the body cavity to the testes, forming one component of the spermatic cord. You saw the only other portal system with the hypothalamic-hypophyseal portal vessel in the endocrine chapter. The paired vertebral arteries join together to form the large basilar artery at the base of the medulla oblongata. This inferior view shows the network of arteries serving the brain. Figure 7. Blood returns via the pulmonary veins to the left atrium. The liver is a complex biochemical processing plant. Table 4 summarizes the aortic arch branches, including the major branches supplying the brain. The stomach is not usually well visualized on the plain film although a gastric bubble (gas outlining the fundus of the stomach) is often visible on an erect chest or abdominal x-ray. The superior phrenic artery provides blood to the superior surface of the diaphragm. However, we will attempt to discuss the major pathways for blood and acquaint you with the major named arteries and veins in the body. Moreover, some superficial veins, such as the great saphenous vein in the femoral region, have no arterial counterpart. The inner mucosal surface has many rugal folds that act to increase the surface area of the stomach lining and increase its efficiency. As the brachial artery approaches the coronoid fossa, it bifurcates into the radial and ulnar arteries, which continue into the forearm, or antebrachium. The abdominal aorta terminates when it bifurcates into the two common iliac arteries at the level of the fourth lumbar vertebra. If you draw an imaginary line at the level of the diaphragm, systemic venous circulation from above that line will generally flow into the superior vena cava; this includes blood from the head, neck, chest, shoulders, and upper limbs. As the basilic vein reaches the antecubital region, it gives off a branch called the median cubital vein that crosses at an angle to join the cephalic vein. The coronary arteries encircle the heart, forming a ring-like structure that divides into the next level of branches that supplies blood to the heart tissues. Visit this site for a brief online summary of the veins. 9. Schumacher U. Thieme Atlas of Anatomy. Like a street that changes name as it passes through an intersection, an artery or vein can change names as it passes an anatomical landmark. Other cerebral veins and those from the eye socket flow into the cavernous sinus, which flows into the petrosal sinus and then into the internal jugular vein. The abdominal part is supplied by arteries from the left gastric … The lumbar portions of the abdominal wall and spinal cord are drained by a series of lumbar veins, usually four on each side.