Description Of The Pituitary Gland And Its Function

Figure 4: Hypothalamic and anterior pituitary glands (right) Description of the pituitary gland and its function Use both the flat and 3D models to visualize the following characteristics of the pituitary and its location Morphology mechanisms A tiny-almond sized organ The pituitary gland is composed of three lobes: Anterior, intermediate (smallest) and posterior (see the figure on the right) Anterior pituitary (AP): Hormones (up regulation and down regulation) are controlled by the hypothalamic hormones. The AP is divided into three parts or pars: the pars tuberalis, pars intermedia and pars distalis. The posterior pituitary develops as an extension of the hypothalamus and its cells (known as the magno-cellular neuro-secretory cells have its cell bodies in the hypothalamus and its axons projecting into the posterior pituitary. The anterior pituitary (adenohypophysis) arises from the oral ectoderm while the posterior pituitary (neurohypophysis) originates from the neuro-ectoderm. The following diagram shows the location and histology of pituitary gland Figure 5: the location of the pituitary gland (upper left) and its anatomy (upper right). The middle is a schematic drawing of the pituitary and the lower (from left to right) are: histology of the anterior pituitary, the pituitary histology, pars nervosa and distals and at far right is a section in the posterior pituitary. You should be able to: Draw a schematic drawing of the pituitary gland both location and itsShow MoreRelatedThe Endocrine System1426 Words   |  6 Pagesregulating the bodys growth and development, controlling the function of various tissues, supporting pregnancy and other reproductive functions, and regulating metabolism. Endocrine organs are sometimes called ductless glands because they have no ducts connecting them to specific body parts. The hormones they secrete are released directly into the bloodstream. In contrast, the exocrine glands, such as the sweat glands or the salivary glands, release their secretions directly to target areasÂâ€"for exampleRead MoreEssay on Bio lap report endocrine system1351 Words   |  6 Pagesand being able to identify them and understand their functions. Yes, there are many safety concerns. We have to make sure that we are in the appropriate environment. We must make sure that everything is clean and sanitary. Some precautions that should be taken is watching all of the safety videos and hand washing. Another very important thing is handling the glass slides, if one breaks it can cause injury. Exercise 1: The Pituitary Gland Observations Please describe in detail the structuresRead MoreProtein Steroid Management Of Patients With A Normal Hypothalamic Pituitary Axis Essay1638 Words   |  7 Pages Pituitary Surgery Perioperative Steroid Management in Patients with a Normal Hypothalamic Pituitary Axis INTRODUCTION Surgery on the pituitary gland and around the sellar region is of special interest to the neurosurgeon. The approach to the gland has evolved over the past 50 years and so has the role of steroids in the perioperative management of these patients. Being one of the organs that play a key role in the hormonal balance of an individual, the neurosurgeon should be particularly carefulRead MoreAddisons Disease - Essay1297 Words   |  6 Pagesadrenal glands is called Addison’s disease. With Addison’s disease, the adrenal glands do not produce enough cortisol and often times an insufficient amount of aldosterone as well. Doctors sometimes refer to Addison’s disease as the illness of chronic adrenal insufficiency, or also called hypocortisolism. â€Å"In 1855, Thomas Addison first described adrenal insufficiency, which was subsequently named after him. The basis of Addison disease has dramatically changed since its initial description. OriginallyRead MoreEssay about Biology Study Guide989 Words   |  4 Pagesto the brain Objective II.6 Explain the functions of the sympathetic and parasympathetic nervous systems. Key Terms sympathetic nervous system parasympathetic nervous system autonomic nervous system Exercises 1. During an emergency, your __symathetic____________ nervous system prepares you for action. 2. After an emergency passes, your __parasympathetic______ nervous system restores your physical functions to a normal state. 3. Nerves that enable yourRead MoreAnatomy and Physiology 2 Lab 13257 Words   |  14 Pagesassociated with this exercise? If so, list what they are and what precautions should be taken. 1. Identify the major endocrine glands and other organs containing endocrine cells on models and diagrams (glands listed below). 2. Identify the major endocrine glands in the cat (glands listed below). 3. Identify the histological features (listed below) of the major endocrine glands on microscope slides. 4. Identify the endocrine organ from which a slide is prepared when viewing the slide with a microscopeRead MoreEssay on The Endocrine System Exam3777 Words   |  16 Pagesto the Gland that Secretes it and the Target organ it effects Hormone ACTH ADH CRH FSH GHRH GnRH hGH (Somatotropin) LH MSH Oxytocin PIH (Dopamine) PRL (Prolactin) Somatostatin (GHIH) TRH TSH A. Liver B. Thyroid C. Gonads – Sperm or Ova D. Gonads - Testosterone E. Mammary Glands - Milk Secreted by 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Target organ 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 F. Adrenal cortex Glucocorticoids G. Brain - Melanin H. Anterior Pituitary I. Posterior Pituitary J. Kidneys Read MoreAnatomy And Physiology Of The Thyroid Gland1402 Words   |  6 Pagesmany people know the affects the thyroid gland can have on the body, and how the thyroid gland has a part in regulating the many different systems. This paper will explain the anatomy and physiology of the thyroid gland, the description, sign and symptoms, causes and risk factors, the diagnosis of the disease, and the possible treatment plans for the disease. The thyroid gland, which is the largest endocrine gland in adults, is a butterfly-shaped gland with two lobes that lie adjacent to the tracheaRead More Impact of Pregnancy Cortisol Levels on High and Low Working Memory Capacity837 Words   |  4 PagesPROJECT DESCRIPTION Impact of Pregnancy Cortisol Levels on High and Low Working Memory Capacity The terms â€Å"baby brain† and â€Å"maternal amnesia† are informally used to describe the perceived memory loss and inattentiveness many women report suffering during pregnancy (Cuttler, Graf, Pawluski Galea, 2010). Previous studies have suggested that this perceived memory loss may be associated with temporary exhaustion of working memory capacity (WMC) (Casey, 2000). In 1971, Marian Diamond andRead More Living with Damage to the Hypothalamus Essay1499 Words   |  6 PagesIt has wide spread connections with the rest of the forebrain and the midbrain. The hypothalamus contains a number of distinct nuclei. Partly through nerves and partly through hypothalamic hormones, the hypothalamus conveys message to pituitary gland, altering its release of hormones. Damage to a hypothalamic nucleus leads to abnormalities in one or more motivated behaviors, such as feeding, drinking, temperature regulation, sexual behavior, fighting, or activity level (Kalat, 2004)