Label the midsagittal view of a human brain model
The Correct Answer and Explanation is:
Based on the anatomical structures indicated in the midsagittal view of the human brain model, here are the correct labels:
- Frontal lobe
- Cingulate sulcus
- Cingulate gyrus
- Corpus callosum
- Septum pellucidum
- Fornix
- Anterior commissure
- Hypothalamus
- Mammillary body
- Pons
- Parietal lobe
- Parieto-occipital sulcus
- Occipital lobe
- Pineal gland (body)
- Corpora quadrigemina
- Cerebral aqueduct
- Cerebellum
- Medulla oblongata
This image provides a detailed look at the brain’s internal organization. The cerebrum is divided into lobes, including the frontal lobe (1) for planning and cognition, the parietal lobe (11) for sensory processing, and the occipital lobe (13) for vision. These lobes are separated by fissures like the parieto-occipital sulcus (12).
Deep within the cerebrum, several structures facilitate communication and emotional processing. The corpus callosum (4) is a massive bundle of nerve fibers connecting the two cerebral hemispheres, while the smaller anterior commissure (7) also links them. The cingulate gyrus (3), part of the limbic system, is involved in emotion and memory, bordered by the cingulate sulcus (2). Other limbic structures include the fornix (6), a key pathway for memory, and the mammillary body (9), also involved in memory recollection. The septum pellucidum (5) is a thin membrane separating the brain’s lateral ventricles.
The central core, or diencephalon, contains the hypothalamus (8), a vital control center for homeostasis, regulating functions like temperature and hunger. The pineal gland (14) is also located here, responsible for secreting melatonin and regulating sleep cycles.
The brainstem, the connection to the spinal cord, consists of three parts. The midbrain contains the corpora quadrigemina (15) for visual and auditory reflexes and the cerebral aqueduct (16), a channel for cerebrospinal fluid. Below this are the pons (10), which relays signals and assists in breathing, and the medulla oblongata (18), which controls essential autonomic functions like heart rate and respiration. Finally, the cerebellum (17) sits at the back, crucial for coordinating voluntary movements, posture, and balance.
