Which term indicates toward the midline between the hemispheres?

Which term indicates toward the midline between the hemispheres?

• A. Lateral
• B. Medial
• C. Ipsilateral
• D. Contralateral

Answer: (B)

Medial describes something toward the midline between the two hemispheres. In neuroanatomy, this means nearer to the center of the brain rather than toward the outer sides. Think of structures like the corpus callosum or the thalamus—these are closer to the midline (medial) than more lateral cortical areas. To contrast briefly: lateral means toward the outer sides of the brain, away from the midline. Ipsilateral and contralateral refer to relation to a specific reference point or lesion: same side (ipsilateral) or opposite side (contralateral), rather than a directional toward or away from the midline.

Medial describes something toward the midline between the two hemispheres. In neuroanatomy, this means nearer to the center of the brain rather than toward the outer sides. Think of structures like the corpus callosum or the thalamus—these are closer to the midline (medial) than more lateral cortical areas.

To contrast briefly: lateral means toward the outer sides of the brain, away from the midline. Ipsilateral and contralateral refer to relation to a specific reference point or lesion: same side (ipsilateral) or opposite side (contralateral), rather than a directional toward or away from the midline.