The pathway indicated by the number 1 in this illustration is known as the

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Quizplus · Accepted Answer

The pathway indicated by number 1 in the illustration is the medial forebrain bundle, a white matter tract that contains several important projections, including dopaminergic fibers involved in reward processing and the modulation of motivated behavior. Option A (massa intermedia) refers to a small bridge of gray matter that connects the two halves of the thalamus, while option C (corticobulbar tract) refers to a collection of fibers that originate in the cortex and terminate in various cranial nerve nuclei, primarily involved in motor control of the head and neck. Option D (fornix) is a prominent limbic pathway that connects the hippocampus to several other brain areas, including the mammillary bodies and the anterior thalamus.

The Pathway Indicated by the Number 1 in This Illustration