ENDOCRINE What type of glands are hormones secreted from – endocrine or exocrine? Endocrine What type of feedback do most glands follow? What is the Lock and Key Theory? Negative feedback Binding between the active site of an enzyme and a substrate molecule. The active site was thought to have a fixed structure (the lock ), which exactly matched the structure of a specific substrate (the key ). What are the 7 hormones of the anterior pituitary gland and their functions and target organs? Adrenocorticotrophic hormone (ACTH) produced and secreted by the anterior pituitary gland regulate levels of the steroid hormone cortisol Thyroid-stimulating hormone (TSH) Pituitary hormone that stimulates the thyroid gland to produce thyroxine (T 4 ), and then triiodothyronine (T 3 ) which stimulates the metabolism of almost every tissue in the body. Luteinising hormone (LH) A hormone produced by gonadotropic cells in the anterior pituitary gland. In females, an acute rise of LH (" LH surge") triggers ovulation and development of the corpus luteum. Follicle-stimulating hormone (FSH) FSH is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland, and regulates the development, growth, pubertal maturation, and reproductive processes of the body. Prolactin (PRL) Is a protein that is best known for its role in enabling mammals, usually females, to produce milk Growth hormone (GH) Stimulates growth , cell reproduction, and cell regeneration in humans. GH is a stress hormone that raises the concentration of glucose and free fatty acids. Melanocyte-stimulating hormone (MSH) Stimulates the production and release of melanin What are tropic hormones? That have other endocrine glands as their target. What are the 2 posterior pituitary hormones and what are their functions and target organs? Oxytocin causes increased contraction of the uterus during labor and stimulates the ejection of milk into the ducts of the breasts. 1
Antidiuretic hormone- kidneys, It tells your kidneys how much water to conserve. ADH constantly regulates and balances the amount of water in your blood What is synergism? Working together How is the anterior pituitary connected to the hypothalamus? The pituitary gland (hypophysis) is attached to the bottom of the hypothalamus by a slender stalk called the infundibulum. What are the functions of T3 and T4? What is Cortisol and where is it secreted from? Together, these hormones regulate your body's temperature, metabolism, and heart rate Cortisol is produced in humans by the zona fasciculata of the adrenal cortex within the adrenal gland. It is released in response to stress and low blood- glucose concentration. Steroid hormone Endocrine functions of pancreas : What is hyperglycemia?