Question

Corpora striata is
A. Roof of lateral ventricle
B. Floor of lateral ventricle
C. Lateral walls of lateral ventricle
D. None of the above

Answer 1

Hint: Corpus striatum is a part of basal ganglia. It is located deep in the cerebral hemispheres. It is situated just lateral to the thalamus.

Complete Answer:
- Corpus Striatum is an important nucleus located in the forebrain. Corpus striatum is considered to be the largest structure present in basal ganglia. It is divided into two parts, dorsal striatum and ventral striatum.
- It is further divided via the internal capsule into two parts, caudate nucleus, and putamen.

Now, let us find the solution from the option.
- The lateral ventricles lie in the cerebral hemisphere. The cross-phase of the lateral ventricle exhibits the roof, floor and median wall.
- The roof is composed of the corpus callosum. The wall is composed of the septum pellucidum. The floor is made from the corpora striata which consist of the caudate nucleus and the lentiform nucleus.

Thus, the correct option is B i.e. Floor of lateral ventricle.

Note: The ventral striatum performs different functions; it is concerned with cognition, action planning, decision-making, motivation, reinforcement and aversive behavior. The striatum is composed of the caudate nucleus and the lentiform nucleus. On the other side, dorsal striatum is concerned with motor functions.