BIOL 321 Lecture Notes - Lecture 3: Pituitary Gland, Adrenal Gland, Adrenocorticotropic Hormone

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25 Aug 2016
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Proximate causes: mechanisms that enable exhibited behaviour in terms of immediate responses. Ultimate causes: how and why did that behaviour come to be in respect with evolution. Endocrine system: a communication network that influences many aspects of animal behaviour. Interconnected, complex communication network, direct and indirect effect on animal behaviour. Ductless glands: glands that secrete hormones directly into bloodstream (vertebrates), or fluid surrounding tissue (invertebrates) Many glands are involved in hormonal secretion in vertebrates; here are some of the main ones: Within each gland, are endocrine cells, these cells synthesize and secrete hormones. Neurohormones: are hormones released into the blood by neurons. Hormones are chemical messengers, affecting target cells around secreting glands. Endocrinology: classification of hormones in different ways: protein hormones: made up of strings of amino acid, peptide hormones: small protein with a small number of amino acids a. i. Is water and blood soluble, hydrophilic, no carriers are required for hormones to travel to blood a. ii.

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