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Hypothalamic disease is a disorder presenting primarily in the hypothalamus, which may be caused by damage resulting from malnutrition, including anorexia and bulimia eating disorders, [1] [2] genetic disorders, radiation, surgery, head trauma, [3] lesion, [1] tumour or other physical injury to the hypothalamus. The hypothalamus is the control ...
The hypothalamus is located below the thalamus and is part of the limbic system. [1] It forms the basal part of the diencephalon. All vertebrate brains contain a hypothalamus. [2] In humans, it is about the size of an almond. [3] The hypothalamus has the function of regulating certain metabolic processes and other activities of the autonomic ...
The hypothalamus produces the hormones oxytocin and vasopressin in its endocrine cells (left). These are released at nerve endings in the posterior pituitary gland and then secreted into the systemic circulation. The hypothalamus releases tropic hormones into the hypophyseal portal system to the anterior pituitary (right).
Schematic of the HPA axis (CRH, corticotropin-releasing hormone; ACTH, adrenocorticotropic hormone) Hypothalamus, pituitary gland, and adrenal cortex The hypothalamic–pituitary–adrenal axis (HPA axis or HTPA axis) is a complex set of direct influences and feedback interactions among three components: the hypothalamus (a part of the brain located below the thalamus), the pituitary gland (a ...
HPG regulation in males, with the inhibin/activin system playing a similar role on GnRH-producing cells. The hypothalamus is located in the brain and secretes GnRH. [1] GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis. [2]
Hypothalamic disorders result from a deficiency in the release of gonadotropic releasing hormone , while pituitary gland disorders are due to a deficiency in the release of gonadotropins from the anterior pituitary. [1] GnRH is the central regulator in reproductive function and sexual development via the HPG axis.
Hypothalamic dysfunction refers to the hypothalamus, which is a structure within the brain which participates in regulating the pituitary gland, autonomic nervous system, and endocrine system. [6] Symptoms related to hypothalamic dysfunction may include abnormal sodium balance ( hyponatremia or hypernatremia ), high progestin levels, low ...
Dysfunctions of the PVN can cause hypersomnia in mice. [2] In humans, the dysfunction of the PVN and the other nuclei around it can lead to drowsiness for up to 20 hours per day. [3] The PVN is thought to mediate many diverse functions through different hormones, including osmoregulation, appetite, wakefulness, and the response of the body to ...