netter11

Cerebrospinal Fluid (CSF): Brain Ventricles and CSF Composition

Left latcral phantom view

Right

CHART 2.2 CSFCOMPOSmON

	CSF	Blood Plasma
Na' (mFq/l)	140-145	135-147
K* (mEq/L)	i	3.5-5.0
Cl' (mEq/L)	115-120	95-105
HCO, (mEq/L)	20	22-28
C.lucose (mg/dL)	50-75	70-110
Protein (g/dL)	0.05-0.07	6.0-7.8
pH	7.3	7.35-7.45

Figurę 2.10 Brain Ventricles and CSF Composition

CSF circulates through the four brain ventrides (two lateral ventndes and a third and fourth ventride) and in the subarachnokJ space sur-rounding the brain and spinał cord. The electrolyte composition of the CSF is regulnted by the choroid plexus, which secretes the CSF.

Importantly. the CSF has a lower [HCO,^_| than plasma and therefore a lower pH. This allows smali changes in blood Pco. to cause changes in CSF pH. which in turn regulates the ratę ol respiration (see Chapter 5).

21

Wyszukiwarka

Podobne podstrony:
14025 netter12 NEUROPHYSIOLOGYCerebrospinal Fluid (CSF): Circulation of CSF Choroid plexus of latcra
50914 netter27 NEUROPHYSIOLOGY A(3 fibers from paciniform corpuscles and Rufiini temiinalsPropr
netter10 NEUROPHYSIOLOGYSynaptic Tr.insmission: Temporal and Spatial Summation C. Icmporal exritator
netter2 NEUROPHYSIOLOGY Central sulcus (Rotando)Organizalion of Ihe Brain: Cerebrum Postcentral gyru
netter20 NEUROPHYSIOLOGYThe Cerebral Cortex Sm!,} Spn4,,,v Sensory Promotor; orientation, eye and

więcej podobnych podstron