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Explain the anatomical and functional relationships of the hypothalamus and the posterior and anterior lobes of the pituitary gland; Identify the two hormones released from the posterior pituitary, their target cells, and principal actions
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
- Posterior Pituitary
- Anterior Pituitary
- Intermediate Pituitary: Melanocyte-Stimulating Hormone
- Chapter Review
- Self Check
- Glossary
The posterior pituitary is actually an extension of the neurons of the paraventricular and supraoptic nuclei of the hypothalamus. The cell bodies of these regions rest in the hypothalamus, but their axons descend as the hypothalamic–hypophyseal tract within the infundibulum, and end in axon terminals that comprise the posterior pituitary (Figure 2)...
The anterior pituitary originates from the digestive tract in the embryo and migrates toward the brain during fetal development. There are three regions: the pars distalis is the most anterior, the pars intermedia is adjacent to the posterior pituitary, and the pars tuberalis is a slender “tube” that wraps the infundibulum. Recall that the posterio...
The cells in the zone between the pituitary lobes secrete a hormone known as melanocyte-stimulating hormone (MSH) that is formed by cleavage of the pro-opiomelanocortin (POMC) precursor protein. Local production of MSH in the skin is responsible for melanin production in response to UV light exposure. The role of MSH made by the pituitary is more c...
The hypothalamus–pituitary complex is located in the diencephalon of the brain. The hypothalamus and the pituitary gland are connected by a structure called the infundibulum, which contains vasculature and nerve axons. The pituitary gland is divided into two distinct structures with different embryonic origins. The posterior lobe houses the axon te...
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acromegaly: disorder in adults caused when abnormally high levels of GH trigger growth of bones in the face, hands, and feet adrenocorticotropic hormone (ACTH): anterior pituitary hormone that stimulates the adrenal cortex to secrete corticosteroid hormones (also called corticotropin) antidiuretic hormone (ADH): hypothalamic hormone that is stored ...
Explain the interrelationships of the anatomy and functions of the hypothalamus and the posterior and anterior lobes of the pituitary gland; Identify the two hormones released from the posterior pituitary, their target cells, and their principal actions
Nov 3, 2023 · The pituitary gland is made of two active lobes; anterior and posterior. The anterior lobe of the pituitary gland, also known as the adenohypophysis, produces and secretes the majority of pituitary hormones. Its function is controlled by the releasing-hormones of the hypothalamus.
In addition, the hypothalamus is anatomically and functionally related to the pituitary gland (or hypophysis), a bean-sized organ suspended from it by a stem called the infundibulum (or pituitary stalk). The pituitary gland is cradled within the sella turcica of the sphenoid bone of the skull.
- Anna Chruścik, Kate Kauter, Louisa Windus, Eliza Whiteside
- 2021
Feb 24, 2023 · Explain the interrelationships of the anatomy and functions of the hypothalamus and the posterior and anterior lobes of the pituitary gland; Identify the two hormones released from the posterior pituitary, their target cells, and their principal actions
About. Transcript. What makes the endocrine organs tick? Find out in this video about the hypothalamus and pituitary glands! Discover how the hypothalamus uses hormones to signal the pituitary gland, influencing the release of hormones that control bodily functions.
- 7 min
- Ryan Scott Patton
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related to: hypothalamus and pituitary gland labeled tissueVisit the HCP website to learn more about hypercortisolism and its effects on the body. Visit the official HCP website to find more info about the 2 types of hypercortisolism.
