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by: Bailey Kurzeja
Bailey Kurzeja
Virginia Tech
GPA 3.952

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About this Document

Testing on Posting Notes
General Biology
Dr. Jerry Via
Class Notes
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This 3 page Class Notes was uploaded by Bailey Kurzeja on Monday March 21, 2016. The Class Notes belongs to BIOL 1005 at Virginia Polytechnic Institute and State University taught by Dr. Jerry Via in Spring 2016. Since its upload, it has received 23 views. For similar materials see General Biology in Biology at Virginia Polytechnic Institute and State University.

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Date Created: 03/21/16
Week 6 Bio Notes 2/23/16  Control immune response o Antihistamines—control realese of histamines, controlling the symptoms o Steroids—cortisol, cortisone, suprersses immune response, also surpress immune system from other infections/inflammation o Anti rejection drugs (organ transplants)—cyclosporine, surpresses killer T-cells cytotoxic T-cells and Beta cells  Probs w/ Immune o Allergy—hypersensitivity to “allergen”  Antigen—pollen, dust, food, pet dander  IGE antibody  Death from HIV infections o Kaposi’s sarcoma o Pheumocystis pneumonia o Other bacterial and viaral infections  HIV treatment o Current therapy is a cocktail mixture of drugs which  Inhibit the infected cells from sheddin gnew viruses  Blocking infection of new cells by viruses which may be circulating in the blood  Nervous system—insantaneous control o Voluntary nerves o Involunatry nervs—autonomic, smooth muscles, digestive  Hormone systesm o Slower acting, prepare body for activities, regulation of body chemistry and metabolism o Longer term physiological development o A cemical messenger (proteins, steorid) produced by an endorcrine gland, aka ductless and hormones released into a cirulatory system o Hormones are either protein or steorid molecules o Hormones are distributed by blood supply to all parts of the body, but affect the activity ofa TARGET cells and tissues…gland hormones o Their conentraions regubladed by negative feedback…very minate  Exocrine gland—has duct, channel where hormones/substances are released  Pheromes o Female animas in estrus o Musk glands of animals o Territorial marking with urine/ubbing o Ant trails o Recogntion of Queen Bee and control of the hive  Silent phermones—reproductive synchrony of women, humans o Sync up yoooo, after about 6 months  Hormone related compounds o Histamine—released at the site of injury, intiates inflamattion o Prostaglandins—produced by a variety of tissues as a result of injury  Mode of action—accentuates pain, enhances inflammation, tends to cause localized smooth muscle contraction, vasodialation and vasoconstriction, enhances scarring process o Anti prostaglandin—asprin and related compounds  Cramping-contraction of smooth muscles of uterus  Fluid retention  Mood changes  Postive feedback  Roles of hypothalamus (Base of brain, consists of nerve tissue) o Mediates control of body by nerves and endocrine mechanisms o Senses levels of hormones for feedback control o Recieves signals from other aprts of brain for hormone release, mating drives, etc o Intiates the process of puberty o Releasing factors for hormones from anterior and posterior pituitary o CCK   Pituitary gland o Base of brain o Size of pea o Posterior—two hormones produced by hypothalamus is released by post  ADH—antidiuretic hormone, monitors fluid levels in body, diuresis (produces urine), antidiuretic (conserves water), CNS is depressed by alcohol (reduces amount of ADH—high urination, dehydration of brain, 15% dehydrated causes hangover)  Oxytocin—acts to cause smooth muscle contraction, intiates labor contractions at birth and expolsion of fetus, milk letdown—intiates milk flow  Pitocin—synthetic oxytocin, liquid dynamite. BABIES o Anterior—release 9 different hormones  Follicle stimulating hormone (FSH)  Reproductive cells o Ovary to produce Ova o Testis to produce Sperm  Control puberty  Leutenizing Hormone (LH)  Ovary for Estrogen, causes ovulation  Testis for Testosterone  Control puberty  Prolactin  Milk production o Birds—courtship, nest building behaivor, egg laying  Adrenocorticotrophic Hormone (ACTH)  Adrenal glands (on top of kindey)  Controlss water and electrolyte balance  Glucose metabolism  Immune response  Thyroid stimulating hormone (TSH)  Thyroid gland o Thyroxine—metabolism o Iodine  Lack of Iodine—elarged thyroid gland, Goifer  Iodized salt


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