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Subcommissural organ. Organum subcommis-surale. Group of specialized ependymal cells below the posterior commissure. They produce Reissner's fiber. B

Dorsal thalamus. Thalamus dorsalis. Portion of thalamus located cranial to the hypothalamic sul-cus.

Interthalamic adhesion (massa intermedia). Ad-

hesio interthalamica. Inconstant (70-85%) connection between right and left thalami. B Anterior tubercle of thalamus. Tuberculum an-terius thalamicum. Small protuberance dorsal to the anterior end of the thalamus above the anterior nucleus of the thalamus. A Internal/external medullary laminae. Laminae medullares interna/externa. Layers of white matter located partly lateral to the thalamus and partly in it. They incompletely separate the individual thalamic nuclei. E Medullary stria of thalamus. Stria medullaris thalamica. Bundle located at the medial side of the thalamus below the thalamic tenia. It continues dorsally into the habenula and receives fibers from the fornix of the stria terminalis and the precommissural septum. A B Pulvinar. Posterior part of thalamus projecting freely. A

Metathalamus. Appendage of thalamus below the pulvinar. A C

Medial geniculate body. Corpus geniculatum mediale. United with the inferior colliculus, it forms a part of the auditory pathway. A C Lateral geniculate body. Corpus geniculatum laterale. Connects with the superior colliculus and visual cortex; it is the termination of most of the fibers of the optic tract. A C Ventral thalamus (subthalamus). Thalamus ventralis (subthalamus). Part of the diencephalon situated basally with respect to the hypothalamic sulcus.

Hypothalamus. Basal part of the diencephalon. B Preoptic area. Area preoptica. Area behind the lamina terminalis and in front of the paraventric-ular nucleus, partly also in front of the supra-optic nucleus. Its nuclei are probably inserted between the olfactory tract and tuber cinereum. B Optic chiasma. Chiasma opticum. Decussation of medial optic nerve fibers between the optic tract and nerve. B C

Optic tract. Tractus opticus. Superficial part of the visual pathway between the optic chiasma and lateral geniculate body visible at the base of the brain. C

Lateral root. Radix lateralis. Fibers of optic tract which end in the lateral geniculate body or superior colliculus. C Medial root. Radix medialis. C Mamillary body. Corpus mamillare. Paired, round elevation on the floor of the diencephalon connected with the thalamus and midbrain. B Tuber cinereum. Gray matter in the posterior wall of the infundibulum. B Infundibulum. Funnel-shaped passage to the posterior lobe of the hypophysis. B Neurohypophysis. Posterior lobe of hypophysis suspended by the infundibulum. B

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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