Search results
Results from the WOW.Com Content Network
Cerebral blood flow (CBF) is the blood supply to the brain in a given period of time. [8] In an adult, CBF is typically 750 millilitres per minute or 15.8 ± 5.7% of the cardiac output. [9] This equates to an average perfusion of 50 to 54 millilitres of blood per 100 grams of brain tissue per minute. [10] [11] [12]
Brain cells make up the functional tissue of the brain. The rest of the brain tissue is the structural stroma that includes connective tissue such as the meninges, blood vessels, and ducts. The two main types of cells in the brain are neurons, also known as nerve cells, and glial cells, also known as neuroglia. [1]
Gyrification in the human brain. Gyrification is the process of forming the characteristic folds of the cerebral cortex. [1] The peak of such a fold is called a gyrus (pl. gyri), and its trough is called a sulcus (pl. sulci).
The endothelial cells in the cerebral blood vessel walls are joined tightly to one another, forming the blood–brain barrier, which blocks the passage of many toxins and pathogens [35] (though at the same time blocking antibodies and some drugs, thereby presenting special challenges in treatment of diseases of the brain). [36]
The pain you’re feeling when you get brain freeze is actually from a layer of receptor cells in the outer covering of the brain, called the meninges. This is where the internal carotid artery ...
Astrocytes express water channels called aquaporins. [10] Until 2000, no physiological function had been identified that explained their presence in the mammalian CNS. Aquaporins are membrane-bound channels and regulate the flux of water into and out of cells. Relative to simple diffusion, they increases water permeability 3– to 10-fold. [11]
The brain produces roughly 500 mL of cerebrospinal fluid per day at a rate of about 20 mL an hour. [18] This transcellular fluid is constantly reabsorbed, so that only 125–150 mL is present at any one time. [1] CSF volume is higher on a mL per kg body weight basis in children compared to adults.
The movie shows him at his desk pounding out a saga of thugs and drugs and dysfunction so hackneyed that it’s practically a parody. Not altogether to his surprise, his agent (John Ortiz) tells ...