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Biology Final Project: Pituitary Gland
Transcript of Biology Final Project: Pituitary Gland
January 19, 2013 There are more endocrine glands that are controlled by the Anterior Pituitary The Posterior Pituitary Anterior Pituitary Posterior Pituitary Posterior Pituitary Anterior Pituitary Anterior Pituitary Anterior Pituitary Anterior Pituitary The hypothalamus Anterior Pituitary Anterior Pituitary The pituitary gland is located within the cranium and it is considered the "master gland".
There are neurohormones that connect to the gland which allows the gland to either stimulate or inhibit the release of specific hormones throughout the body. The hypothalamus' job is to release or inhibit hormones. It also regulates the secretion of anterior pituitary hormones.
E.G. Releasing hormone- GHRH ( growth hormone)
Inhibiting hormone- Somatostatin ( growth hormone) The anterior pituitary controls many hormones which control other endocrine glands such as:
Mammary gland: The anterior pituitary secretes prolactin (PRL) which stimulates breast development and milk production. Bones and soft tissue: The anterior pituitary secretes growth hormones (GH) which allows the bones and soft tissue to grow. These hormones also control metabolism of glucose and other "energy" molecules Thyroid Gland: Thyroid stimulating hormone (TSH) is secreted by the anterior pituitary which cause more thyroid stimulating hormones to be released and it also promotes the growth of the thyroid gland. Adrenal Cortex: The adrenal cortex is located over the kidneys. The Anterior Pituitary gland releases adrenocorticotropic hormone (ACTH) which stimulates the secretion of glucocorticoids, helps regulate fluid balance and it helps the body cope with stress. Ovaries and testes: The secretion of follicle-stimulating hormone (FSH) and lutenizing hormone (LH) occurs.
FSH: stimulates egg growth and development and stimulation of sex hormones in women and stimulates sperm production in males
LH: Regulates ovulation in females and the secretion of sex hormones in males. Melanocytes: Melanocytes are cells in the skin which promotes darkening. The hormone that allows this to happen is the melanocyte- stimulating hormone (MSH). Endorphins: Endorphins are released by the anterior pituitary when the body is experiencing pain. This hormone is released to inhibit the perception of pain. Kidneys: The posterior pituitary releases antidiuretic hormone (ADH) to the kidneys to increase blood volume and pressure by increasing water reabsorption in the kidneys. Uterus and mammary glands: The posterior pituitary releases oxytocin during child birth. This allows the uterus to contract and it also stimulates milk release from the breasts. The pituitary gland is called the "master gland" for a reason because of its ability to produce hormones that control many of the endocrine glands. Hope you enjoyed my presentation! References:
Biology 12 Textbook