All living organisms maintain a complex dynamic equilibrium‚ or homeostasis‚ which is constantly challenged by internal or external adverse effects‚ termed stressors.[4‚5] Thus‚ stress is defined as a state in which homeostasis is actually threatened or perceived to be so; homeostasis is re-established by a complex repertoire of behavioral and physiological adaptive responses of the organism Our biological stress response was designed for survival and is regulated by both the neural and endocrine
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I. Describe the role of the following hormones in the formation of urine‚ specifically explain the stimulus for their release‚ actions (decrease/increase GFR) and whether or not dilute/concentrated urine results): ADH (Vasopressin) – ADH has an antidiuretic action that prevents the production of dilute urine. Formation of urine = in the DCT and collecting ducts‚ water movement out of the body is regulated by ADH. Stimulus for their release = lowered blood pressure or low salt or water concentration
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anterior and posterior lobes. Between there is a small‚ relatively avasacular zone called the pars intermedia. This intermediate lobe is absent in human beings. Pituitary gland lies in the sella turcica at the base of the brain and is connected to the hypothalamus by the pituitary stalk. Hormones of pituitary gland (Hypophysis) Anterior pituitary (adenohypophysis) secretes thyroid stimulating hormone (TSH‚ thyrotropin)‚ adrenocorticotropic hormone (ACTH‚ corticotropin)‚ lutenizing hormone (LH)‚ follicle
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Acute Stress – Sympatho- Adreno- Medullary Pathway 1. Hypothalamus * Sends a signal to the sympathetic ganglia 2. Sympathetic Ganglia * Connected to internal organs * Activates the Adrenal Medulla. 3. Adrenal Medulla * Releases Adrenaline and Noradrenalin into the blood stream. * Prepares the body for fight or flight mode. Stress as a Bodily Response Stress if the lack of fit between the individual and their environment. What are the signs of stress
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Cortisol helps maintain blood pressure and cardiovascular function‚ slows immune systems inflammatory response‚ breaks down sugar for energy (balancing insulin levels) and helps regulate metabolism of proteins‚ carbohydrates and fats. The brains hypothalamus glands control and accurately balance the amounts of cortisol needed. Symptoms of Addison’s disease are slow and progressive but if left untreated may become fatal. Worsening fatigue and muscle weakness‚ loss of appetite and weight loss are
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It is produced by and “controlled by a complex set of hormones produced in the hypothalamus of the brain and in the intestinal tract and pancreas” (Harvard Men’s Health Watch). It is one of the main reasons why kids grow‚ because the production of HGH rises during childhood and produces the most during puberty; this is the stages in
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Human Endocrine System A system of glands and cells that make hormones that are released directly into the blood and travel to tissues and organs all over the body. The endocrine system controls growth‚ sexual development‚ sleep‚ hunger‚ and the way the body uses food. [pic] The human endocrine system modulates several processes of the body by the function of hormones. The endocrine system secretes hormones that control how bodily functions work. Thus‚ the human endocrine system watches
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Part 1 of 15 - 6.67/ 8.335 Points Question 1 of 60 1.67/ 1.667 Points An organ that can be classified as both an endocrine and exocrine gland is the A. hypothalamus. B. thymus gland. C. gallbladder. D. pituitary gland. E. pancreas. Answer Key: E Feedback: Good job! Question 2 of 60 1.67/ 1.667 Points Hormones that bind to receptors inside of target cells are usually A. proteins. B. second messengers. C. lipid soluble. D. prohormones. E. water soluble
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plays an important role in female pubertal development such as‚ breast development‚ uterine development‚ and skeletal changes such as widening of the hips. The endocrine system plays a significant role in pubertal development as well. The hypothalamus‚ which is a structure located in the brain‚ helps regulate and monitor hormone secretion within the body. In connection to this the pituitary gland influences growth by producing growth hormones‚ in correlation with the thyroid gland‚ this
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Organization of the human body Human anatomy and physiology – study of the structure and function of the human body. Anatomy- the scientific discipline that investigates the structure of the human body. Physiology – The scientific discipline that investigates the process of functions of living things. 6 Structural levels 1. Chemical level – atoms combine to form molecules 2. Cell level – Molecule form organelles 3. Tissue level – similar and surrounding material make up tissues
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