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بسم الله الرحمن الرحيم. Controls of different body system - Endocrine system - Nervous system - Immune system

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  • Controls of different body system

    - Endocrine system- Nervous system - Immune system

  • Endocrine systemEndocrine cell hormones blood Capillarytarget tissues (organs) = receptor

  • Type of endocrine glandshypophysis epiphysis langerhan's island adrenal thyroid parathyroid

  • hypophysis = pituitary glandsphenoid bone

  • origin double = ectoderm surface ectoderm=Rathke's pouch(adenohypohysis) -neural ectoderm = Neurohypohysis

  • Neurohypohysisadenohypohysis

  • Adenohypophysis (anterior lobe)3-partpars distalis pars tubularis pars intermedia

  • Capsule, Trabecula =pia materStroma= reticular c.t.Sructure:1= endocrine cell2=Fenestrated capillary

  • pars distalis= 75%

    two type cell 1- chromophobic cell 2- chromophilic cell A- acidophilic cell B-basophilic cell

  • 1- chromophobic cell

  • acidophilic cell1- somatotropic cell Growth hormone (somatotropin) 2-mamotropic cell prolactin

  • Growth hormone

  • Acromegaly&Gigantism

    Enlargement of Face, Hands, Feetsgrowth hormone

  • nanism

  • 2-mamotropic cell

    prolactin

  • basophilic cell

  • 1-corticotropic cell ACTH 3-gonadrtopic cell , FSH , LH 2-thyrotropic cell, TSH

  • * pars tubularis

    gonadotropic cell = FSH , LH

  • Pars intermediapars intermedia = rudimentary basophilic cell ( -MSH)

  • neurohypohysis1- pars nervosa 2- infundibulum 3- neural stalk

  • Pars nervosa, infundibulumInfundibulum: Herring body

  • structure-secretory neuron(unmylinated)--Pitucyte (25%)=neuroglia -

  • hormones1-Oxytocin (neurophysin) + ATP 2-vaso pressin (ADH) (Neurophysin) + ATP

  • Epiphysis = pineal glandShap: flattened conical organ

  • StructureCapsule: pia mater Septa: pia mater irregular lobule1-Fenestrated capillary2-Cells: A-pinealocyte B-asterocyte = glial cell

  • regulatory of physiological systematicA-pinealocyte: Produce: melatonin , serotoninmelatonin (dark period) serotonin (light region)

  • Aging=Brain sand

  • pineal gland =

    visual stimuli relayed

  • langerhan's islet (pancreas)round cluster of cellnumber: > million islets (Tail) capsule: reticular C.Tstroma: reticular C.T cell (cord) + capillary

  • Type of cellscells: 4 type different hormonesA-cell = 20% = marginal zone glucagun

  • B-cell = 70% = central zone Insulin D-cell = somatostatin = transitional zone = < 5% F-cell = transitional zone (little) pancreatic polypeptide