A protective network of blood vessels and cells that filters blood flowing to the brain.

A network of blood vessels and tissue that is made up of closely spaced cells and helps keep harmful substances from reaching the brain. The blood-brain barrier lets some substances, such as water, ox [..]

A specialized capillary arrangement in the brain that restricts the passage of most substances into the brain, thereby preventing dramatic fluctuations in the brain's environment.

Physiological interface between brain tissues and circulating blood created by a mechanism that alters the permeability of brain capillaries, so that some substances are prevented from entering brain [..]

The membrane which separates the brain cells and the circulating blood.

A specialized mechanism that inhibits the passage of certain materials from the blood into brain tissue and cerebrospinal fluid. bolus

The barrier in the brain that stops large and harmful drugs from passing into the brain from the blood stream. Important and needed chemicals and molecules can pass but nothing else.

n. a protective barrier of cells that line the capillary endings supplying blood to the brain and central nervous system. Semipermeable in nature, it prevents large molecules and harmful substances in [..]

A protective network of blood vessels and cells that filters blood flowing to the brain.

The mechanisms that make the movement of substances from blood vessels into brain cells more difficult than exchanges in other body organs, thus affording the brain greater protection from exposure to some substances found in the blood.

A protective barrier formed by the blood vessels and glia of the brain. It prevents some substances in the blood from entering brain tissue.

A process whereby certain substances fail to leave the blood circulation and enter the gray and white matter of the brain. The “barrier” is more of a physiological concept than a defined anatomic stru [..]

A network of blood vessels with closely spaced cells that makes it difficult for potentially toxic substances (such as anticancer drugs) to penetrate the blood vessel walls and enter the brain.

The Blood-brain barrier (BBB) is the barrier between the blood circulating through the head and the cerebrospinal fluid that protects and cushions the central nervous system. The barrier stops substan [..]

A semi-permeable layer of tightly joined cells that separate the brain from circulating blood. The blood-brain barrier prevents potentially dangerous substances in the blood, such as disease-causing organisms or chemical compounds, from entering the brain tissue. Certain antiretroviral (ARV) drugs can cross the blood-brain barrier and may help stop [..]

Specialized non-fenestrated tightly-joined ENDOTHELIAL CELLS with TIGHT JUNCTIONS that form a transport barrier for certain substances between the cerebral capillaries and the BRAIN tissue.

the protective membrane that separates circulating blood from brain cells.

a tight layer of cells and tissue that separates the brain from the rest of the body; a physical roadblock that normally keeps immune cells outside the brain.

The specialized system of capillary endothelial cells that protects the brain from harmful substances in the blood stream, while supplying the brain with the require nutrients for proper function.

A semipermeable membrane that controls diffusion of molecules into the cerebrospinal fluid.

Close knit cells of blood vessels in the brain, which limit substances that can enter the brain.

A network of blood vessels with closely spaced cells that makes it difficult for potentially toxic substances (such as anticancer drugs) to penetrate the blood vessel walls and enter the brain.

A semipermeable membrane that keeps the blood that is circulating in the brain away from the tissue fluids surrounding the brain cells.

(anatomy) A structure in the central nervous system (CNS) that keeps various substances found in the bloodstream out of the brain while allowing in the substances essential to metabolic function, e. [..]

A thin layer of tightly packed cells separating the central nervous system from the body’s blood stream. This layer blocks the ability of many substances, including certain drugs, from entering the br [..]

A protective barrier that lines the blood vessels, this layer of cells is designed to prevent damaging cells and other substances in the blood (including those that could cause disease) from entering [..]