Ventricles and Major Vasculature Flashcards
name the ventricles of the brain
lateral ventricles
3rd ventricle
4th ventricle
where is the 3rd ventricle located?
dorsal to diancephalon
what connects the 3rd ventricle to the 4th?
cerebral aqueduct
where is the 4th ventricle located?
dorsal to the pons/medulla
what connects the lateral ventricles to the 3rd ventricle?
foramen of monro
where is CSF produced?
choroid plexus of the ventricles of the brain
where does CSF flow?
in ventricles and the subarachnoid space
after the fourth ventricle where can CSF go?
into subarachnoid space or into the central canal of the spinal cord
what are the exit holes called in the fourth ventricle that enter into the subarachnoid space?
dorsal holes
where does CSF get reabsorbed?
into arachnoid granulations
how do we get hydrocephalus?
blockage of CSF and buildup in the ventricles of the brain
if blockage is in aqueduct, where does hydrocephalus occur>
in the lateral and 3rd ventricle only
the central sulcus divides what two main landmarks?
precentral gyrus and postcentral gyrus
the precentral gyrus is what?
primary motor cortex
the postcentral gyrus is what?
primary somatosensory cortex
the lateral sulcus divides what?
temporal lobe from rest of the brain
in the motor somatopy map, what is located most central?
toes to upper leg
in the motor somatopy map, what is located next to the legs?
arm motor movement
in the motor somatopy map, what is located next to the arms?
facial movements
in the motor somatopy map, what is located most lateral ?
tongue, swallowing
do motor and sensory somatopy maps match?
yes…so leg to arm to face to throat moving medial to lateral
what lies just anterior to the primary motor cortex?
motor association cortex
what lies just posterior to the primary somatosensory cortex?
somatosensory association area
what is Brocas area used for?
language production