Ap bio help....please... ten points for best answer?Read, highlight, and take notes, across web, tablet, and phone. This medical terminology text uses a Programmed Learning approach that is ideal for classroom use, self-paced study, or distance learning. It is broken down into concise self-instruction frames followed by review frames for immediate feedback and reinforcement. Actual medical records and medical record analysis activities are used extensively throughout secretex book. Highlights of this nandrolone effects include a more engaging design, additional illustrations, more detailed coverage of term components, chapter objectives checklists, and acronyms and abbreviations charts.
Exploring Anatomy & Physiology in the Laboratory: Core Concepts - Erin C. Amerman - Google Books
The Endocrine system along with the nervous system controls and regulates the complex activities of the body. The Endocrine system regulates the activities of the body by secreting complex chemical substances hormones into the blood stream.
These secretions come from a variety of glands which control various organs of the body. The key functions are:. This is known as the "master gland" because it exerts control over all of the other glands of the endocrine system. Despite its importance the pituitary gland is no larger than a small pea. The Pituitary gland is made up of two separate glands: The Anterior Lobe of the pituitary plays the 'master' role secreting six major hormones that affect most of the body, including the other Endocrine glands:.
The Posterior Lobe of the Pituitary Gland or neurophpophysis stores and releases hormones secreted by the hypothalamus section of the brain including:. The thyroid is a butterfly shaped gland which is located at the base of the throat. It has two lobes separated in the middle by a strip of tissue the isthmus.
The Thyroid itself secretes three main hormones:. People who have surgery to remove the thyroid gland thyroidectomy for cancer or other thyroid problems usually need to take thyroxine supplements in order to maintain normal weigh and body functions.
There are four Parathyroid glands which are small and rounded, arranged in two pairs usually located above and below the thyroid. Each Parathyroid is small, yellow and smooth, sometimes they imbed themselves in the thyroid itself. Parathyroid hormone increases the blood concentrations of calcium and phosphorous, working to balance the Calcitonin which is secreted by the thyroid to maintain the body's balance of calcium. The pancreas is a long, narrow, lobed gland located behind the stomach.
The Pancreas has two types of cells: The exocrine cells secrete Pancreatic juices which are used in the duodenum as an important part in the digestive system.
The endocrine cells are arranged in clusters throughout the Pancreas, these known as Islets of Langerhans. There are three types of endocrine cells; alpha cells which secrete glucagon, beta cells which secrete insulin, and delta cells which inhibit the secretion on glucagon and insulin:. The adrenal glands resemble small caps perched on top of each kidney. The Adrenal is actually a combination of two glands the adrenal cortex and the adrenal medulla.
The adrenal cortex is essential for life, as opposed to the adrenal medulla which is important but not indispensable. The anterior pituitary controls the adrenal cortex by secreting the hormone ACTH. All of the secretions of the adrenal cortex are known as steroids, many of which can now be manufactured synthetically. The adrenal cortex is made up of three layers associated with three classes of hormones:. The Adrenal Medulla is the inner part of the adrenal gland.
The hormones secreted effect the structures in the body that are under the control of the sympathetic nervous system, aiding the body to deal with stressful situations such as fright, attack or pursuit. They are both associated with an increased heart beat, higher blood pressure, and higher blood glucose levels, thus preparing the body for quick action. The gonads consist of ovaries in the female and testes in the male.
These glands produce hormones important in the development and functioning of the reproductive organs. Male testes are egg shaped glands located in the sac like scrotum, and serve two main functions: Testosterone is the masculizing hormone inducing male secondary sexual characteristics after puberty.
Female ovaries are two almond shaped glands on each side of the uterus. They have three main functions; i Containing immature ova eggs , ii The secretion of oestrogen, and ii the secretion of progesterone. Ostrogen is secreted by the adrenal cortex as well as the ovaries, and is present in the blood of all females from puberty through to the menopause. This induces and maintains female secondary sexual characteristics.
Progesterone works on the uterus to prepare it for the implantation of a fertilised ovum egg. It causes the development of the breasts, and is essential for the complete development of the maternal proportion of the placenta.
Giantism too much HGH is secreted before puberty. Dwarfism is caused by a lack of HGH before puberty. Diabetes Mellitus is a condition with under-secretion of insulin, causing the cells to loose their permeability to glucose preventing them from getting sugar needed for energy. Sugar remains in the blood and often the body will try and remove this leading to a high sugar content in the urine, causing polyuria passing of large volumes of urine and polydipsia excessive thirst.
Here are some examples related to the Endocrine System. For more details see Chapter 4: Understanding the Components of Medical Terminology. Endocrine System - Self Test questions. WebAnatomy, University of Minnesota Test your anatomy knowledge with these interactive questions. Includes different question types and answers.
Paul Andersen Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions of ten glands; pineal, anterior pituitary, posterior pituitary, thyroid, parathyroid, pancreas, adrenal cortex, adrenal medulla, testes and ovaries.
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