Lateral Ventricle

Question 1

Site

Answer 1

Cavity of cerebral hemisphere (2 lateral ventricles, one on each side of the hemisphere) lined by cubical epithelium (ependyma)

Question 2

Communications

Answer 2

Communicates with 3rd ventricle through interventricular foramen of monro

Question 3

Shape

Answer 3

Elongated crescentric cavity

Question 4

Parts

Answer 4

1. Body (central part)
2. 3 horns:
   - anterior
   - posterior
   - inferior

Question 5

Central part body site

Answer 5

1. Extends from interventricular foramen to corpus callosum splenium
2. Lies in parietal lobe

Question 6

Anterior horn site

Answer 6

1. Part in front of interventricular foramen
2. Passes forwards and lateral into frontal lobe

Question 7

Posterior horn site

Answer 7

1. Begins at corpus callosum splenium
2. Runs backwards and medial into occipital lobe

Question 8

Inferior horn site

Answer 8

1. Direct continuation of body
2. Passes downwards and lateral round thalamus posterior end, the forwards and medial into temporal lobe as far as uncus

Question 9

Collateral trigone

Answer 9

Meeting of body posterior end posterior and inferior horns

Question 10

Anterior horn shape

Answer 10

Triangular in coronal section

Question 11

Anterior horn: anterior wall

Answer 11

Limit
Corpus callosum genu

Question 12

Anterior horn: roof

Answer 12

Anterior part of corpus callosum body

Question 13

Anterior horn: medial wall

Answer 13

Anterior part of septum pellucidum (above) and fornix body (below and behind)

Question 14

Anterior horn: lateral wall and floor

Answer 14

1. Caudate head
2. Upper surface of corpus callosum rostrum

Question 15

Central part: roof

Answer 15

Posterior part of corpus callosum body

Question 16

Central part: medial wall

Answer 16

Posterior part of septum pellucidum

Question 17

Central body: floor from lateral to medial

Answer 17

1. Caudate body: arches above and lateral to thalamus with stria terminalis and thalamo-striate vein in between
2. Lateral part thalamus dorsal (upper) surface
3. Lateral ventricle choroid plexus
4. Fornix body: arches above medial part of thalamus dorsal (upper) surface separating it from lateral ventricle floor

Question 18

Posterior horn: roof and lateral wall

Answer 18

Corpus callosum tapetum lateral to which runs optic radiation fibers

Question 19

Posterior horn: medial wall

Answer 19

Sloping and shows 2 parallel elevations:
1. Posterior horn bulb (above)
2. Calcarine avis (below)

Question 20

Inferior horn: roof

Answer 20

1. Caudate tail: passing forwards to end in amygdaloid nucleus
2. Stria terminalis: amygdaloid nucleus efferent runs backwards along caudate tail medial edge

Question 21

Inferior horn: lateral

Answer 21

Formed by tapetum

Question 22

Inferior horn: floor from medial to lateral

Answer 22

1. Fimbria (axons of hippocampus cells)
2. Hippocampus: anterior end (below amygdaloid nucleus) is expanded to form pes hippocampi
3. Collateral eminence: slight elevation formed by collateral sulcus

Question 23

Inferior horn: medial wall

Answer 23

Occupied by choroid fissure lower part through which choroid plexus (branch from anterior choroidal artery) enters infrerior horn

Question 24

Choroid plexus of lateral ventricle: body

Answer 24

Derived from posterior choroidal artery

Question 25

Choroid plexus of lateral ventricle: inferior horn

Answer 25

Derived from anterior choroidal artery