Anatomy 17

Question 1

What is the lateral ventricle?

Answer 1

A Y-shaped cavity in the cerebral hemisphere

Question 2

What is the lateral ventricle divided into:

Answer 2

1) A central part (body)

2) 3 horns

Question 3

Where does the central part of the lateral ventricle extend from and to?

Answer 3

From the interventricular foramen to the splenium of corpus callosum

Question 4

What are the 3 horns of the lateral ventricle?

Answer 4

1) Anterior horn
2) Posterior horn
3) Inferior horn

Question 5

Where does the anterior horn of the lateral ventricle lie?

Answer 5

In the frontal lobe in front of the interventricular foramen

Question 6

Where does the posterior horn of the lateral ventricle lie?

Answer 6

In the occipital lobe

Question 7

Where does the inferior horn of the lateral ventricle lie?

Answer 7

In the temporal lobe

Question 8

The lateral ventricle is connected to the __ by __.

Answer 8

3rd ventricle; interventricular foramen (of Monro)

Question 9

What is the Trigone (atrium)?

Answer 9

The part of the body at the

junction of inferior and posterior horns

Question 10

What does the Trigone (atrium) contain?

Answer 10

The glomus (choroid plexus tuft) calcified in adult (x ray & CT).

Question 11

What is found on the roof of the body of the lateral ventricle?

Answer 11

Body of the Corpus callosum

Question 12

What is found on the floor of the body of the lateral ventricle?

Answer 12

1) Body of Caudate Nucleus
2) Body of the thalamus
3) Stria terminalis between thalamus and caudate.

Question 13

What does Stria terminales connect?

Answer 13

Amygdala and ventral nucleus of the hypothalmus

Question 14

What is found on the medial wall of the body of the lateral ventricle?

Answer 14

1) Septum Pellucidum

2) Body of the fornix (choroid fissure between fornix and thalamus (choroid plexus))

Question 15

What is found on the roof of the anterior horn of the lateral ventricle?

Answer 15

Genu of the Corpus callosum

Question 16

What is found on the floor of the anterior horn of the lateral ventricle?

Answer 16

Head of Caudate Nucleus

Question 17

What is found on the medial wall of the anterior horn of the lateral ventricle?

Answer 17

1) Rostrum of corpus callosum
2) Septum Pellucidum
3) Anterior column of the fornix

Question 18

What is found on the roof and lateral wall of the posterior horn of the lateral ventricle?

Answer 18

1) Tapetum of the corpus callosum

2) Optic radiation lying against the tapetum in the lateral wall

Question 19

What is found on the medial wall of the posterior horn of the lateral ventricle?

Answer 19

Two convexities:
1) Upper (bulb of the posterior horn)
  -Splenium of the corpus
    callosum (bulb) 
2) Lower (Calcar avis)
  -Calcarine sulcus

Question 20

What happens if Calcar avis is well developed?

Answer 20

It obliterates the posterior horn

Question 21

What is found on the roof of the inferior horn of the lateral ventricle?

Answer 21

1) Tail of the caudate nucleus

2) Amygdaloid body

Question 22

What is found on the lateral wall of the inferior horn of the lateral ventricle?

Answer 22

Tapetum of corpus callosum and optic radiation

Question 23

What is found on the floor of the inferior horn of the lateral ventricle?

Answer 23

Medially: Hippocampus
Laterally: Collateral eminence (by collateral fissure)

Question 24

What enters the inferior horn of the lateral ventricle and from where?

Answer 24

Lower part of the choroid plexus; from the temporal part of the choroid fissure

Question 25

Choroid plexus projects into the ventricles on its:

Answer 25

Medial aspect

Question 26

What is the choroid plexus composed of?

Answer 26

Pia matter covered with ependymal lining of the ventricle.

Question 27

Choroid plexus is made of:

Answer 27

Tela choroidea (two layers of pia matter)

Question 28

Where does the choroid plexus lie between?

Answer 28

Between fornix superiorly and thalamus inferiorly

Question 29

Where is the choroid plexus situated?

Answer 29

In the inferior horn of the lateral ventricle

Question 30

The choroid plexus projects into the:

Answer 30

Choroid fissure

Question 31

What is the choroid plexus formed by?

Answer 31

1) Posterior choroid branch of PCA (body)

2) Anterior choroid branch of ICA (inferior horn)