Brain Blood Supply
Brain Blood Supply - Related Videos
01:16
Blood Supply to the Digestive System
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2025
Splanchnic circulation refers to the network of blood vessels that supply and drain blood from the abdominal organs involved in digestion, including the stomach, liver, pancreas, intestines, and spleen. This circulation delivers essential nutrients and oxygen while removing waste products from these organs. Blood Supply to the Digestive System: The splanchnic circulation involves three main arteries: the celiac artery (also known as the celiac trunk) and the superior and inferior mesenteric...
01:29
Blood and Nerve Supply to the Bones
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2023
Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries. Nutrient Artery The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
01:18
Blood and Nerve Supply to the Kidney
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2024
The kidneys are vital organs responsible for filtering and cleaning blood, removing waste products, and regulating electrolyte levels. To perform these essential functions, they require a constant and robust blood supply. Bloody Supply to the Kidneys: The kidneys receive their blood supply from the renal arteries, which branch off from the abdominal aorta—the main artery supplying the abdomen and lower body. The renal arteries enter the kidneys at the hilum, a notch on the medial side of each...
01:24
Regulation of Angiogenesis and Blood Supply
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2023
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
08:40
Improved Method for the Preparation of a Human Cell-based, Contact Model of the Blood-Brain Barrier
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Cited by 16 •
2013
Establishment of human models of the blood-brain barrier (BBB) can benefit research into brain conditions associated with BBB failure. We describe here an improved technique for preparation of a contact BBB model, which permits coculturing of human astrocytes and brain endothelial cells on the opposite sides of a porous membrane.
FAQs
The internal carotid and vertebral arteries are linked through the Circle of Willis, creating an important anatomical framework for tracing arterial circulation. In biology, mapping this arrangement helps researchers examine how blood reaches neural tissue and assess how changes in connected vessels could influence oxygen delivery, nutrient availability, or the removal of metabolic waste.
Autoregulation adjusts the diameter of cerebral vessels to help maintain relatively stable blood flow. This mechanism matters because neural tissue depends on a consistent supply of oxygen and nutrients, even when vascular conditions change. Studying vessel diameter and flow regulation therefore helps explain how the brain supports ongoing function and how impaired regulation may affect neural tissue.
The blood-brain barrier controls molecular exchange between blood and nervous tissue rather than allowing unrestricted movement of substances. This selective interface is a key component of brain circulation because it links vascular function with the chemical environment surrounding neural tissue. Its activity is therefore relevant when studying how blood-borne molecules may influence the brain.
Following the routes from the internal carotid and vertebral arteries to the Circle of Willis gives researchers a structured way to describe cerebral circulation. This anatomical approach supports comparisons among vessels and helps connect vascular organization with neural biology. It is especially useful when interpreting how a change in one part of the network could relate to brain injury or disease.
Clinical imaging can be used to investigate the organization and condition of vessels supplying the brain. The resulting information supports evaluation of circulation in settings involving stroke, aneurysms, or traumatic injury. It also helps clinicians and researchers relate visible vascular features to the broader biological questions of oxygen delivery, nutrient supply, waste removal, and tissue damage.
Neurosurgical planning depends on understanding the vessels surrounding and supplying neural tissue. Knowledge of the arterial network, its connections, and the blood-brain barrier provides biological context for evaluating procedures near vascular structures. This information can help clinicians anticipate how intervention may relate to cerebral blood flow and the tissue conditions required for brain function.
Altered cerebral circulation is central to research on stroke, aneurysms, and traumatic injury. These conditions make the relationships among vessels, regulated blood flow, and neural tissue especially important. Studying the system can help investigators connect vascular abnormalities with disrupted oxygen or nutrient delivery, impaired waste removal, and changes in the biological environment of the brain.