Classification of hormone 1)Proteins and Polypeptides Insulin,gastrointestinal hormone, 2).Amine hormone:N,NE,T 3)Steroids secreted by the adrenal cortex (cortisol and aldosterone),the ovaries (estrogen and progesterone), the testes (testosterone),and the placenta (estrogen and progesterone)
1) Proteins and Polypeptides Insulin, gastrointestinal hormone, 2). Amine hormone：N, NE, T 3) Steroids secreted by the adrenal cortex (cortisol and aldosterone), the ovaries (estrogen and progesterone), the testes (testosterone), and the placenta (estrogen and progesterone) Classification of hormone
Properties of the hormone effect 1.Specificity The special feature of the the target cells is the presence of receptors which can "attract"and interact with the hormone. Receptor Secreting cell Target cell Not a target cell(no receptors)
Properties of the hormone effect 1. Specificity The special feature of the the target cells is the presence of receptors which can “attract” and interact with the hormone
Properties of the hormone effect 2.Signal Transmission The role of the hormones is to transit the regulatory signals from the control (endocrine)system to the target cells (organs or glands). It could enhance or inhibit 6壁结 some function of the target. 乳头体 3.Highly active 神整垂体 ADH
Properties of the hormone effect 2. Signal Transmission The role of the hormones is to transit the regulatory signals from the control (endocrine) system to the target cells (organs or glands). 3.Highly active It could enhance or inhibit some function of the target
4.Interaction Between the Hormones (1)Synergistic effects. (2)Antagonist Effects (3)Permissive effect 250 200 Glucagon Epinephrine Cortisol 150 Glucagon Epinephrine Epinephrine 100 Glucagon Cortisol 0 1 2 3 4 5 Time in hours
4. Interaction Between the Hormones (1) Synergistic effects. (2) Antagonist Effects (3) Permissive effect
5.Rhythmicity of hormone resection 25 060 5 Lunch Dinner Sleep Breakfast ■■T Noon 4 PM 8 PM Mid- 4AM 8AM Noon night
5. Rhythmicity of hormone resection