UW-Milwaukee BIOSCI 150 - Metabolism (5 pages)

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Lecture number:
Lecture Note
University of Wisconsin-Milwaukee
Biosci 150 - Foundations of Biological Sciences I

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BIO SCI 150 1st Edition Lecture 6 Outline of Last Lecture 1 The Cell a How to Study i Observation ii Microscopic Examination iii Cell Fractionation b Cell Types i Prokaryotic ii Eukaryotic c Membrane Wall and Junctions 2 Cell Membrane a Purpose b To Study c Structure i Permeability 1 Kinds of Transport d Large Molecules Outline of Current Lecture 1 Endocrine System a Properties b Types per Location c Regulation 2 Energy and Reactions a Key terms b Thermodynamics i Bond Energies ii Reactions and Enzymes Endocrine System Hormones secreted by endocrine glands are transported via the circulatory system to target cells Exocrine glands secrete into ducts Paracrine and synaptic signaling are local The hormone molecules range widely as to type and target The major endocrine glands and their products are Anterior Pituitary o Gland located at the base of the brain synthesizes direct hormones which act on target cells andtropic hormones which act on other endocrine glands to release hormones Hypothalamus o Neurosecretory cells produce hormones that are stored and released by the posterior pituitary Thyroid and parathyroid o Located on the trachea the thyroid produces iodine containing hormones Adrenal Cortex o Located on the kidney produces the corticosteroids Adrenal Medulla o Sympathetic nerve cells that secrete catecholamines derivatives of amino acids into thecirculatory system Pancreas o Secretes digestive enzymes into small intestine The islets of Langerhans produce hormones Testes o Male sex organ Ovary o Female sex organ production also in the placenta Pineal o Gland at the base of the neck associated with circadian rhythms Gland is regulated by light anddark Heart o Heart produces hormone involved in water and salt balance Thymus o Essential in the development of the immune system it is the site of T cell maturation Hormone Regulation Negative Feedback and the Pituitary Hormones To maintain a constant level of cortical hormones high levels will inhibit release ofCRF

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