ENDOCRINE SYSTEM The endocrine system helps regulate and maintain various body functions by synthesizing (making) and releasing hormones‚ chemical messengers. The endocrine system is composed of glands that release their hormones directly into the bloodstream for chemical signaling of target cells. Endocrine glands do not have a duct system and are called ductless glands. These glands release hormones directly into the blood or lymph. These glands include the pituitary gland‚ the pineal gland
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? Just a flat line. 2. What was the threshold voltage
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Lymphatic system Lymphatic capillaries-Absorb excess tissue fluid and return it to the blood stream Lacteals (in small intestine) –absorb fats vin the form lipoproteins and transport them to the bloodstream Lymphoid organs lymphatic vessels are sites of production and distribution of lymphocytes‚ which help defend the body against pathogens Lymphatic vessels One- way system-The movement of fluid is dependent upon skeletal muscle contraction; when the muscles contract‚ fluid is squeezed past
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Skeletal Muscle Physiology Activity 1 1. Skeletal muscle fiber- long‚ cylindrical cell with multiple oval nuclei arranged just beneath the sarcolemma Motor unit- all of the muscle cells controlled by a single motor neuron Skeletal muscle twitch- a single stimulus-contraction-relaxation cycle in a skeletal muscle Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start
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Human Science – CHAPTER 1 1. Which Organ system maintains a relatively slow-acting degree of control over most bodily functions? Endocrine System (hormones act in minutes to hours‚ in contrast to nerve impulses‚ which act in fractions of a second). 2. The esophagus and the trachea run side-by-side through the thorax. In which systems are these organs found? The esophagus belongs to the digestive system‚ and the trachea belongs to the respiratory system. (The esophagus carries food to the stomach
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EXERCISE 10: Acid-Base Balance Grading: True/False‚ Multiple-Choice‚ and Fill-in-the-blank type questions will be worth 1 point each whereas Short-answer type questions will be worth 2 points each. This lab will be worth a total of 45 points but will be converted to a percentage grade when registered in your “Gradebook”. |ACTIVITY 1: Hyperventilation |Answers | |A
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Endocrine The endocrine gland system helps produce and deliver hormones. These help take control of many important body parts. It also helps your body change your calories into energy. Endocrine system is important because it impacts how your heart beats‚ how your tissues grow and even if you can have a baby. It also plays a role if you would or wouldn’t develop thyroid‚ growth disorders‚ or a host of other hormone related disorders. The glands of the endocrine system let go of specific hormones
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Hormones and the Endocrine System 26.1 Chemical and electrical signals coordinate body functions The Endocrine System is a group of interacting glands and tissues throughout the animal body that produce and secrete chemical to initiate and maintain body functions and activities. Chemical Signals -Hormones - are released into the bloodstream by endocrine cells and carried to all locations in the body Consists of all hormone secreting cells Works with the nervous system in regulating body activities
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The equine endocrine system is a group of organs that release hormones in the horses body to regulate things like growth‚ metabolism‚ and reproduction. Hormones production is directed by brain signals caused by outside stimuli and it maintained through negative and positive feedback loops. One of the main organs in the endocrine system is the pituitary gland located on the floor of the skull. The hormones produced by the pituitary have a variety of functions from metabolism to reproduction. The most
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Notes on Final Exam: Practice Exams 1-4 are open for practice Final Exam consists of 100 questions Red scantron required Equal amount of questions from last 3 chapters covered. Wasn’t enough time to cover everything‚ so don’t JUST study this! DO NOT FORGET – Exam 4 due Monday at noon! Endocrine System Hormones: functions‚ where they’re secreted from‚ etc. Adrenal Glands: Cortex: Zona Glomerulosa mineralcorticoids - Aldosterone Zona Fasiculata glucocorticoids – Cortisol (synergist)
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