Week 11 - Glymphatic System

Question 1

What are glial cells?

Answer 1

• surround neurones to hold in place
• supply nutrients and oxygen
• insulate neurons from each other
• destroy pathogens
• remove dead neurons

Question 2

How does CSF circulate?

Answer 2

• CerebroSpinal Fluid
• produced in choroid plexi
• by Na⁺ and Cl^-
• sets up osmotic gradient
• protects from concussion and washes the brain
• superior sagittal sinus to the brain

Question 3

What is the anatomy of the glymphatic system?

Answer 3

• small artieries dive and penetrate into the parenchyma
• connective flow to the veins where waste products are left
• resistance of this flow drops during sleep
• because astrocytes extensions become thinner