neuro 2 - CNS circulation

Question 1

the ventricular system

Answer 1

a set of interconnected spaces/cavities that circulate cerebrospinal fluid

Question 2

CSF is made by

Answer 2

choroid plexus

Question 3

choroid plexus is found

Answer 3

in the lateral 3rd and 4th ventricles

Question 4

CSF flow pathway

Answer 4

choroid plexus > lateral ventricle > intraventircular foramen (foramen on monro) > 3rd ventricle > cerebral aqueduct > 4th ventricle >
CSF leaves via the 2 lateral formamina (formaina of lushka) and 1 median aperture (foramen of magendie) of 4th ventricle and enter subarachnoid space

Question 5

most CSF exits through

Answer 5

the median aperture > cistern magna (between cerebellum and medulla)

Question 6

CSF reabsorbed mostly at the

Answer 6

superior sagittal sinus vis arachnoid villi

Question 7

the arachnoid villi with age

Answer 7

become hypertrophic and are called granulations

Question 8

hydrcephalus

Answer 8

an obstructin of CSF within the ventricular system

Question 9

2 types of hydrocephalus

Answer 9

communicating (nonobstructive) and non-communicating (obstructive)

Question 10

communicating hydrocephalus

Answer 10

impaired CSF rreabsorption w/o obstruction of CSF flw between the ventricles and subarachnoid space

Question 11

non comunicaating obstruction of CSF

Answer 11

there is an obstruction in the ventricular system

Question 12

notable side effect f non cmmunicatng obstructioon of CSF

Answer 12

chiari malformation

downward displacement of cerebellum through foramen magnum

Question 13

chiari malformation

Answer 13

downward displacement of cerebellum through foramen magnum

Question 14

the brain is supplied by

Answer 14

internal carotid arteries and vertebral arteries

Question 15

the carotids give rise t

Answer 15

give rise to many branches

Question 16

the carotids terminate

Answer 16

into the anterior and middle cerebral arteries

Question 17

the vertebral arteries converge at

Answer 17

the medulla/pons to create the basillar artery

Question 18

the basillary artery gives rise to

Answer 18

several arteries before it terminates into the superior cerebellar arteries and the posterior cerebral arteries

Question 19

the vertebral and corotid arteries are linked by

Answer 19

cerebral arterial circle (circle of willis)

Question 20

the circle of willis encircles the

Answer 20

optic chiasma

Question 21

anterior cerebral artery stroke symptoms

Answer 21

loss of smell (anosmia) - olfactory bulb and tract

weakness or paralysis of lower limb - motor cortex

Question 22

middle cerebral artery stroke symptoms

Answer 22

speech impairments/aphasia - broca’s and wernicke’s

weakness or paralysis of the face and upper limb - motor cortex

Question 23

posterior cerebral artery stroke symptoms

Answer 23

cortical blindness - occipital lobe 
face blindness (prospagnosia) - temporal lobe

Question 24

what are the main branches which supply the cerebral cortex

Answer 24

the anterior, middle and posterior cerebral artery

Question 25

prosopagnosia

Answer 25

face blindness