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testis
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Medical illustration of a human male testis with labeled structures including the epididymis, ductus (vas) deferens, testicular artery, pampiniform plexus, efferent ductules, septa, lobules, and tunica albuginea, showing the anatomy and connections of the male reproductive system. human sperm cells Medical illustration of the male reproductive system in cross-section, showing labeled anatomical structures such as the penis, testis, scrotum, prostate, urethra, seminal vesicle, and associated ducts and glands. Major glands of the human endocrine system. The hypothalamus stimulates the pituitary gland and influences food intake, weight regulation, fluid intake and balance, thirst, body heat, and the sleep cycle. Pituitary hormones stimulate growth, egg and sperm development, milk secretion, and release of hormones by other glands. The pineal gland may play a significant role in sexual maturation and the circadian rhythm. Thyroid hormones regulate the metabolic rate of tissues, stimulate the contraction of heart muscle, and are necessary for normal growth and brain development before birth and during infancy. Parathyroid hormone regulates calcium, phosphorus, and magnesium levels. The adrenal glands regulate salt and water retention, some reactions of the immune system, and blood pressure. The islets of Langerhans regulate blood sugar levels. The ovaries and testes produce hormones that regulate the reproductive system and that produce male and female secondary sex characteristics. The principal glands of the female and male human endocrine systems.
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testis: References & Edit History

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Article History

Type Description Contributor Date
Modified link of Web site: National Center for Biotechnology Information - Embryology, Testicle. Oct 29, 2026
Add new Web site: Canadian Cancer Society - The testicles. Feb 25, 2026
Add new Web site: The Royal Society Publishing - Open Biology - Brain and testis: more alike than previously thought? Aug 29, 2025
Add new Web site: Medicine LibreTexts - Scrotum and Testes. Jun 06, 2025
Add new Web site: CORE - Testes (PDF). Jan 30, 2025
Add new Web site: Mustansiriyah University - Prostate gland (PDF). Dec 19, 2024
Add new Web site: University of Anbar - Testis and scrotum. Oct 18, 2024
Add new Web site: Iowa State University Digital Press - Human Reproduction: A Clinical Approach - Scrotum and Testes. Aug 21, 2024
Add new Web site: The Ohio State University Pressbooks - Veterinary Histology - The testes. Feb 28, 2024
Add new Web site: Medicine LibreTexts - Testes. Jan 05, 2024
Add new Web site: National Cancer Institute - SEER Training Modules - Testes. Nov 10, 2023
Add new Web site: Live Science - Testicles: Facts, Function & Diseases. Sep 29, 2023
Add new Web site: Better Health Channel - Testicle injuries and conditions. Aug 14, 2023
Add new Web site: TeachMeAnatomy - The Testes and Epididymis. May 08, 2023
Add new Web site: Cleveland Clinic - Testicles. Feb 18, 2023
Add new Web site: National Center for Biotechnology Information - Embryology, Testicle. Jan 08, 2023
Add new Web site: Verywell Health - Testes Anatomy, Function, and Associated Conditions. Sep 06, 2022
Add new Web site: Healthline - Testes Overview. Dec 31, 2013
Add new Web site: Emedicine - Testes and Epididymis Anatomy. Dec 18, 2011
Added information on the anatomy of the testes, spermatogenesis, and regulation of testicular function. Dec 03, 2009
Added new Web site: How Stuff Works - Healthguide - Testicular Biopsy. Sep 24, 2008
Added new Web site: How Stuff Works - Healthguide - Testicle Ultrasound. Sep 24, 2008
Media added. Sep 19, 2008
Added new Web site: http://www.fda.gov/fdac/features/196_test.html. Oct 30, 2007
Article added to new online database. May 27, 1999
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