HLTH108 Lecture Notes - Lecture 12: Dense Irregular Connective Tissue, Falx Cerebri, Arachnoid Mater
3 Aug 2018
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9th april 2018: lecture 12 - brain: organisation of nervous system, meninges: (spinal and cranial) Epidural space (filled with fat and connective tissue) Arachnoid mater (middle): avascular, subdural space (btw dura and arachnoid) Pia mater (innermost): well vascularized, subarachnoid space (btw arachnoid and pia) Lateral extensions of the tickened pia denticulate ligaments, protect and anchor spinal cord: cerebrospinal fluid (csf): Mainly water, contains oxygen, glucose, proteins and white blood cells. Circulates through the cavities in the brain and spinal cord and in the subarachnoid spaces. Produced in the choroid plexuses (networks of blood capillaries in the ventricular walls); from the ventricles to the subarachnoid spaces through the median and 2 lateral apertures in the 4th ventricle: white matter: Association (btw gyri in the same hemisphere) Projection (other parts of cns: basal ganglia (nuclei): Function: helps initiate and terminate movement, muscle tone, subconscious contractions of skeletal muscle. Globus pallidus + putamen = lentiform nucleus.
