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4
102

Vitamin B12 Digestion and Absorption

http://armandoh.org/ https://www.facebook.com/ArmandoHasudungan Support me: http://www.patreon.com/armando Instagram: http://instagram.com/armandohasudungan ...  
youtube.com
over 6 years ago
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5
171

Cerebrospinal fluid

The cerebrospinal fluid (CSF) is produced from arterial blood by the choroid plexuses of the lateral and fourth ventricles by a combined process of diffusion, pinocytosis and active transfer. A small amount is also produced by ependymal cells. The choroid plexus consists of tufts of capillaries with thin fenestrated endothelial cells. These are covered by modified ependymal cells with bulbous microvilli. The total volume of CSF in the adult ranges from140 to 270 ml. The volume of the ventricles is about 25 ml. CSF is produced at a rate of 0.2 - 0.7 ml per minute or 600-700 ml per day. The circulation of CSF is aided by the pulsations of the choroid plexus and by the motion of the cilia of ependymal cells. CSF is absorbed across the arachnoid villi into the venous circulation and a significant amount probably also drains into lymphatic vessels around the cranial cavity and spinal canal. The arachnoid villi act as one-way valves between the subarachnoid space and the dural sinuses. The rate of absorption correlates with the CSF pressure. CSF acts as a cushion that protects the brain from shocks and supports the venous sinuses (primarily the superior sagittal sinus, opening when CSF pressure exceeds venous pressure). It also plays an important role in the homeostasis and metabolism of the central nervous system.  
neuropathology-web.org
over 6 years ago
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0
18

Is Migraine a Lipid Disorder?

New research has suggested migraine may be linked to irregularities in the metabolism of certain lipids, opening new avenues for research into new possible treatments and biomarkers for the condition.  
medscape.com
over 6 years ago
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8
424

Citric Acid Cycle (Kreb's Cycle) Made Easy

The various key features of the citric acid cycle, otherwise known as the Kreb's cycle.  
youtube.com
about 6 years ago
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31
3360

The Renin Angiotensin Aldosterone System (RAAS)

Illustrated tutorial overview of the Renin-Angiotensin-Aldosterone System.  
youtube.com
about 6 years ago
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13
1891

What is The ATP Cycle?

Adenosine Triphosphate (ATP) is a really important short-term energy storage compound in cells.  
youtube.com
about 6 years ago
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95
3103

Renin Angiotensin Aldosterone System

This tutorial explores the Renin Angiotensin Aldosterone System, its role in Blood Pressure, the enzymes involved, and how drugs act upon the system.  
youtube.com
about 6 years ago