Proper brain ventricle formation during embryonic brain development is required for normal brain function. Brain ventricles are the highly conserved cavities within the brain that are filled with cerebrospinal fluid. In zebrafish, after neural tube formation, the neuroepithelium undergoes a series of constrictions and folds while it fills with fluid resulting in brain ventricle formation. In or...

The site of action for the pressor response to bradykinin administered into the lateral ventricle has been reported to be either in the septal area or in the ventral portion of the third ventricle. We obtained dose-response curves for the pressor effect of bradykinin injected into the lateral ventricle or the posterior region of the fourth ventricle of normotensive Wistar and spontaneously hype...

We define matching between ventricle and afterload to imply that the ventricle is adapted to its afterload to yield maximum external work output. For the ventricle, this optimal adaption will depend on end-diastolic dimension, heart rate, and contractility. Because contractility is impaired during ventricular failure, we propose that the adaption between ventricle and load is not as good during...

The water, nitrogen, and electrolyte content of the normal canine myocardium partitioned as right ventricle, septum, and left ventricle are presented on a connective tissue-free basis as well as fat-free and blood-free. Considering the tissue on a fat-free, blood-free, connective tissue-free basis, the extracellular phase (expressed as g/kg heart muscle) of the left ventricle was 86% that of th...

The lateral ventricle is filled with cerebrospinal fluid (CSF) in the brain. Some brain diseases are caused by changing of the ventricle shape or volume. The ventricle shape and volume are used to diagnose patients who have brain diseases. This paper proposes an algorithm of digital image processing for segmentation of a ventricle from CT brain images. The process starts with normalizing the CT...