Bonpoc 10 What connects the medial surfaces of the thalamus? a. Fornix. b . Commissure , interthalamic fusion; C . Peduncles of the midbrain;

The correct answer is b. Commissure interthalamicus.The commissure interthalamicus, also known as the interthalamic commissure, is a bundle of nerve fibers that connects the medial surfaces of the thalamus. It allows for communication between the two halves of the thalamus, facilitating the integration and processing of sensory and motor information.Option a, the fornix, is a bundle of nerve fibers that connects the hippocampus to the mammillary bodies and other structures in the brain. It is not directly involved in connecting the medial surfaces of the thalamus.Option c, the peduncles of the midbrain, refer to the cerebral peduncles, which are structures in the midbrain that contain descending motor fibers. They are not directly involved in connecting the medial surfaces of the thalamus.