Summary

This document provides a set of questions and answers related to the Diencephalon and Midbrain sections of the brain's anatomy. The specific content includes questions about components, subdivisions, structures, and functions.

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Question Answer What are the components Thalamoencephalon, Hypothalamus, Subthalamus, Third ventricle. of the Diencephalon? What are the subdivisions Thalamus, Metathalamus, Epithalamus. of the Thalamoencephalon? What is the superior A layer of whit...

Question Answer What are the components Thalamoencephalon, Hypothalamus, Subthalamus, Third ventricle. of the Diencephalon? What are the subdivisions Thalamus, Metathalamus, Epithalamus. of the Thalamoencephalon? What is the superior A layer of white matter called stratum zonale. surface of the thalamus covered by? What are some structures Stria terminalis, Talamostriate vein, Lamina affixa, Choroid plexus, Stria medullaris, Anterior tubercle, Pulvinar. found on the floor of the central part of the lateral ventricle? What covers the inferior Hypothalamic region. surface of the thalamus? What covers the lateral Capsular region covered by reticular zone. surface of the thalamus? What covers the medial Wall of the third ventricle covered by the central grey matter. surface of the thalamus? Name the nuclei of the Anterior, paraventricular, supraoptic, suprachiasmatic, medial, lateral (ventral and dorsal groups), reticular, thalamus. intralaminar, centromedian, habenula, lateral and medial geniculate bodies, pulvinar. Name the parts of the The parts of the epithalamus include the Habenular trigone, Habenula, Habenular commissure, Posterior commissure, epithalamus. and the Pineal body. Where is the pineal body Above the superior colliculi of the midbrain. located? What is the pineal body -superiorly : The habenular commissure. connected with? - inferiorly : The posterior commissure. What is the pineal body The posterior commissure. connected with inferiorly? What may happen if the It may lead to premature and incomplete or delayed puberty. pineal body malfunctions? Name the parts of the The parts of the metathalamus are the lateral geniculate body and the medial geniculate body. metathalamus. What essential functions Endocrine system, fluid balance, body temperature, feeding behavior, and sexual activity. does the hypothalamus control? What does the The hypothalamus consists of the optic chiasm, optic tracts, tuber cinereum, infundibulum, pituitary gland, and hypothalamus consist of? mammillary bodies. What does the The function of the organs: thyroid, suprarenal gland, ovary, testis, mammary gland, bone, and fat tissue. tuberoinfundibular tract control? What are the hormones TSH controlled by the , ACTH tuberoinfundibular tract? , LH, FSH, GH, PRL. What does the ADH (controls water balance in the body) and Oxytocin (responsible for contraction of the uterus during delivery). supraopticophyseal tract control? What is the posterior part of Neurohypophysis. the pituitary gland called? Name all the nuclei of the Supraoptic nucleus, Paraventricular nucleus, Preoptic area (nucleus), Suprachiasmatic nucleus hypothalamus in the anterior group. ---NOTE---, Suprachiasmatic nucleus: regulating the body's circadian rhythm, or the internal body clock that controls the sleep-wake cycle. Name all the nuclei of the Infundibular nucleus, Ventromedial nucleus, Dorsomedial nucleus, Lateral nucleus, Tubero-mamillary nucleus hypothalamus in the middle group. Question Answer Name all the nuclei of the Medial mamillary nucleus, Lateral mamillary nucleus, Mamillary intercalate nucleus, Premamillary nucleus, Posterior hypothalamus in the area posterior group. ---NOTE---: most of the posterior nuclei are responsible for memory and spatial navigation What structures form the Tela choroidea, corpus callosum, and fornix. superior wall of third ventricle ? What structures are part of Lamina terminalis, Anterior commissure, Free part of the columns of fornix, Triangular recess, Optic recess. the anterior wall of the brain? What forms the inferior wall Optic chiasm, infundibulum, tuber cinereum, mammillary bodies, subthalamus, and crura of the brain and tegmen of of the third ventricle? mesencephalon. What forms the posterior The posterior wall of the third ventricle is formed by the pineal body, habenular commissure, and posterior commissure. wall of the third ventricle? What structures are found Thalamus, hypothalamic sulcus, interventricular opening, interthalamic adhesion, and transverse fibers. in the lateral wall of the third ventricle ? What structures form the The midbrain is formed by the Lamina tecti (Tectum), Aqueduct, and Cerebral Peduncles, which consist of the Cerebral midbrain? crura (anteriorly) and the Tegmentum (posteriorly). What are the components Superior colliculi and Inferior colliculi. of the Lamina tecti in the Mesencephalon? Where does the Brachia Pulvinar and medial geniculate body, and reaches optic tract and lateral geniculate body. colliculorum superior pass between? note : Brachia colliculorum, These are the nerve fibers that connect the superior and inferior colliculi to other parts of the brain Where does the Brachia Medial geniculate body. colliculorum inferior reach? What are the limits of Anterior limit - lateral sulcus of cerebral crus, Superior limit - inferior colliculus and its brachium, Inferior limit - superior Lemniscus trigone? cerebellar peduncle. What are the two parts of Cerebral crura (anteriorly) and tegmentum (posteriorly). the cerebral peduncles in the midbrain? What could you find within Within the interpeduncular fossa, you can find the posterior perforated substance, the medial and lateral sulci of the the interpeduncular fossa? cerebral crus, and the emergence of the oculomotor nerve from the brain. Name the nuclei of the Superior colliculus, Inferior colliculus, Intercollicular nucleus, Oculomotor nucleus, Trochlear nucleus, Nucleus of mesencephalon. mesencephalic tract of the Trigeminal nerve, Substantia nigra, Red nucleus, Grey central substance (Substantia grisea centralis), Reticular formation, Medial lemniscus, Lateral lemniscus, Medial longitudinal fascicle, Interstitial nucleus.

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