Figure 2-4 Lateral (A) and medial (B) views of the primary lobes of the cerebral hemisphere.
Midsagittal section revealing the dural extensions (falx cerebri, falx cerebelli, and tentorium cerebella.
Figure 4-12 Brain vesicles at the beginning of week 6. A. Lateral view of the brain vesicles. B. Midline section through the brain vesicles and spinal cord. Note the thin roof of the rhomben-cephalon. C. The lumina of the spinal cord and brain vesicles.
In light, the pupil controls the amount of light that enters by reflexively constricting. Which results in a narrower opening. B. The pupil reflexively dilates in the dark, allowing maximum light to enter the eye.
The mechanism responsible for controlling eye movements.
A syringomyelic cavity in the cervical gray matter (A) interrupts the crossing of pain-mediating spinothalamic fibers, causing a bilateral loss of pain and temperature and possibly bilateral flaccid paralysis of the muscles of the upper limbs (B).
Nuclei embedded within the cere-bellar medullary region, including the dentate, embo-liform, globose, and fastigial nuclei.
Almond-shaped medial limbic structure asso-ciated with visceral and vegetative activities needed for selfpreservation, such as mating, fighting, and eating. Also controls autonomic responses to stress. It is reciprocally connected to the hypothalamus, hippocampus, and thalamus. Functionally, it is concerned with emo-tional responses.