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Unformatted text preview: Endocrine system o Glands- secrete endocrine hormones o Pattern of hormonal control o Release of hormone -&gt; transport to target -&gt; target cells receive signal -&gt; Response 3 classes of hormones Peptide and protein hormones (water soluble) o Interact with receptors on cell surfaces Amino acid derivative (water soluble) o Interact with receptors on cell surfaces o Small; produced from 1 or 2 amino acids Steroid hormone (lipid soluble) o Diffuse across membranes o Interact with receptors inside the cell o Molting Ecdysone is the hormone responsible for molting in arthropoda o Hypothalamus Releasing and inhibiting hormones Made of nuerosecretory cells o pituitary gland Anterior pituitary gland Produces peptide hormones FSH- follicle stimulating hormone (affects gonads) LH- luteinizing hormone (affects gonads) TSH- thyroid-stimulating hormone (affects thyroids) ACTH- adrenocorticotropic hormone (affects adrenal glands) Posterior pituitary gland Releases hormones synthesized by cells in the hypothalamus Adh- antidiuretic hormone ( water conservation, less urine) Oxytocin Uterus, mammary glands, brain Childbirth, lactation, trust Thyroid gland Thyroxine requires iodine to activate increases metabolic rate cacitonin (amino acid derivative) Parathyroid gland Parathyroid hormone increases calcium levels in blood Pancreas Insulin- reduces blood sugar Glucogen- increases blood sugar Digestive enzymes Testes Androgens A collective of different steroids hormones Testosterone is the most important Ovaries Estrogens Major one is estradiol Progesterone Adrenal glands (stress glands)...
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- Spring '11