Pituitary: The Master Gland 1. pituitary gland (hypophysis): produces 8 major hormones a. two lobes 1. anterior lobe (adenohypophysis): glandular tissue 2. posterior lobe (neurohypophysis): nervous tissue and is a direct extension of the hypothalamus b. connected to hypothalamus via the infundibulum 2. pituitary-hypothalamus relationships a. vascular connection between the anterior lobe and the hypothalamus b. the hypo. makes releasing/inhibitory hormones (RH/IH) that enter
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body is found in the thyroid gland‚ but is found also in the blood and muscles. The body contains approximately 20 to 30 mg of iodine which is mostly stored in the thyroid gland located in front of the neck. Food sources: Milk is the major source‚ fish from the sea‚ ‚ shell fish‚ fish liver oil‚ sunflower seeds‚ yogurt(low fat) egg‚ strawberries‚ mozzarella cheese and iodized salt. Seaweed is also a good source of iodine. Function : Help ensure proper thyroid gland functioning. Keeps hair‚ skin
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movement of amino acids through membranes; promotes growth of long bones. Prolactin (PRL) – Sustains milk production after birth; amplifies effect of LH in males. Thyroid-stimulating Hormone (TSH) – Controls secretion of hormones from the thyroid gland. Adrenocorticotropic Hormone (ACTH) – Controls secretion of certain hormones from the adrenal cortex. Follicle-stimulating hormone (FHS) – Development of egg-containing follicles in ovaries; stimulates follicular cells to secrete estrogen; in males
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Hypothalamus Secreted hormone | Abbreviation | Produced by | Effect | Thyrotropin-releasing hormone (Prolactin-releasing hormone) | TRH‚‚ or | Parvocellular neurosecretory neurons | Stimulate thyroid-stimulating hormone (TSH) released fromanterior pituitary (primarily) Stimulate prolactin release from anterior pituitary | Dopamine (Prolactin-inhibiting hormone) | DA or PIH | Dopamine neurons of the arcuate nucleus | Inhibit prolactin released from anterior pituitary | Growth hormone-releasing
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HORMONES Hormones are a class of regulatory biochemicals produced in all multicellular organisms by glands‚ and transported by the circulatory system to a distant target organ to coordinate its physiology and behavior. They serve as a major form of communication between different organs and tissues. Hormones regulate a variety of physiological and behavioral activities‚ including digestion‚ metabolism‚ respiration‚ tissue function‚ sensory perception‚ sleep‚excretion‚ lactation‚ stress‚ growth and
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action of the ____ muscles of the hair follicles. 6. Excessive hairiness is called hypertrichosis‚ while thinning of the hair is called ____. . Sweat glands are also known as _sudoriferous___ glands. One type‚ called ____ glands‚ serve for evaporative cooling of the body‚ while the other type‚ called ____ glands‚ are scent glands. One place where the latter type can be found is the ____ region. 2. We lose about half a liter of water a day by ____ perspiration‚ which we don’t notice because
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it smells really good.’” Castoreum is a chemical compound that mostly comes from a beaver’s castor sacs‚ which are located between the pelvis and the base of the tail. Because of its close proximity to the anal glands‚ castoreum is often a combination of castor gland secretions‚ anal gland secretions‚ and urine. The fragrant‚ brown slime is about the consistency of molasses‚ though not quite as thick‚ Crawford said. While most anal secretions stink—due to odor-producing bacteria in the gut—this chemical
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1. Your knees shake as you get out of your seat. Your stomach does somersaults; your hands start to quiver. Your ears become hot as you blush bright red‚ your voice wavers‚ you look at your feet and fidget you wish the floor would open up and engulf you in one big bite. Have you felt or done some or all of these nervous actions? Well you don’t need to worry anymore when you are next nervous. Maybe to your utter disbelief it is normal for your nerves to be in an uproar when you’re nervous. 2
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Outline the organisation and function of the endocrine system M3 – Explain the function of the endocrine system Organisation of the endocrine system: (diagrams of each) • Pituitary gland • Hypothalamus • Thyroid and parathyroid gland • Pancreas • Adrenal medulla • Adrenal cortex • Gonads and placenta • Pineal • Gastrointestinal tract To achieve M3 state what function it has in relation to endocrine system. Function of the endocrine system: • Characteristics of hormones (diagram
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rib cage is removed to expose the neck and chest organs. This opening allows the trachea (windpipe)‚ thyroid gland‚ parathyroid glands‚ esophagus‚ heart‚ thoracic aorta and lungs to be removed. Following removal of the neck and chest organs‚ the abdominal organs are cut (dissected) free. These include the intestines‚ liver‚ gallbladder and bile duct system‚ pancreas‚ spleen‚ adrenal glands‚ kidneys‚ ureters‚ urinary bladder‚ abdominal aorta‚ and reproductive organs. To remove
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