Anatomi Sistem Endokrin 2003
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Transcript of Anatomi Sistem Endokrin 2003
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KELOMPOK 1
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SISTEM ENDOKRIN, adalaho Sistem yang terdiri dari KELENJAR
ENDOKRINo Yang menghasilkan HORMON
KELENJAR ENDOKRINo Suatu ORGAN TERSENDIRI atauo Sekumpulan sel kelenjar yang jadi bagian
ORGAN yang bukan kelenjaro TIDAK MEMPUNYAI Saluran pengeluaran
(ductus excretorius) produksi Hormon dilepas ke cairan intersel darah
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FUNGSI SISTEM ENDOKRIN
o Sistem Endokrin + Sistem Neural bersama-sama mengatur s
o semua aktifitas organ/sistem tubuh lainnya, termasuk diantara keduanya.
o Tujuannya HOMEOSTASIS
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( merupakan Organ TERSENDIRI )1. Glandula HYPOPHYSE2. Glandula THYREOIDEA3. Glandula PARATHYREOIDEA4. Glandula SUPRARENALIS5. PANCREAS6. TESTIS/OVARIUM7. EPIPHYSE (= Glandula Pinealis)8. THYMUS
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Asal embriologik dan susunannya :1.
2
Rongga mulut Rathke Adenohipofisis
Otak yang sedang
berkembang Neurohipofisis
Neural
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8
Glandula Pituitaria Bentuk Ovoid/kacang, 12 x 8 mm, ± 500 mg LETAK
o Intracranial ( dalam cavum cranii = rongga kepala )– Pada Fossa Hypophyse dibasis cranii (os
sphenoidale)– Diluar Duramater (pembungkus Cerebrum)
o Dikelilingi pembuluh darah CIRCULUS WILLISI
o Dibelakang bawah CHIASMA OPTICUM Gld. Hypophyse tergantung pada Hypothalamus Hanya ada SATU Gld. Hypophyse
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PRODUKSI HORMONo LOBUS ANTERIOR
1. THYROID STIMULATING HORMONE (TSH) Gld. Thyreoidea2. FOLLICLE STIMULATING HORMONE (FSH) Ovarium3. ADRENOCORTI COTROPIN HORMONE (ACTH) Gld. Suprarenalis4. SOMATOTROPIN HORMONE/STH (GROWTH HORMONE = GH)5. LUTEINIZING HORMONE (LH), pada wanita Ovarium6. INTERSTITIAL CELL STIMULATING HORMONE (ICSH), pd pria
Testis7. PROLACTIN / LACTOGENIC HORMONE Mammae8. MELANOCYTE STIMULATING HORMONE (MSH) kulit
o LOBUS POSTERIOR1. OXYTOCIN2. VASOPRESSIN / ANTIDIURETIC HORMONE (ADH)
Karena itu Glandula Hypophyse = MASTER GLAND
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Adenohypophysis
Mamillary of Hypothalamus
Infundibulum
Neurohypophysis
Sella Turcica
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Bagian dari EPITHALAMUS (Struktur Syaraf)
Terletak Intracranial, pada ujung posterior di linea mediana DIENCEPHALON
Ada 1 (satu) FUNGSI :
o INHIBISI (menghambat) Aktifitas hormon dari Hypothalamus, Gld. Hypophyse, Gld. Parathyreoidea, Pancreas, Testis / Ovarium
o Pengaturan Pigmentasio Fotosensitif
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Terdiri dari :o 2 LOBUS LATERALIS DEXTER dan SINISTES
– Keduanya simetris– Berbentuk “ CONUS “
o 1 ISTHMUS, menghubungkan kedua Lobuso Kadang-kadang ada LOBUS PYRAMIDALIS
Berat ± 500 gram, tinggi ± 5 cm Dibungkus oleh 2 pembungkus FASCIA
Superficial (paling luar) = False CapsuleProfunda (lapisan dalam) = TRUE Capsule
Gld. Parathyreoidea, ikut terbungkus bersama gld. Thyreoidea oleh False Capsule
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LETAKo diventral :
– Bagian Caudal LARYNX (Cartilago Thyreoidea + Cricoidea)– Bagian Cranial TRACHEA (s/d cincin cartilago trachealis
VI)o ditutupi :
– Otot-otot Infrahyoido medial (sisi dalam) :
– Larynx– Trachea– Oesphagus– Carotid Sheath– N. Recurrens laryngeus
Melekat pada LARYNX ikut gerakan naik-turun LARYNX Produksi Hormon THYROXIN
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Ada 4 buah, dorsal Lobus Lateralis Dexter + Sinister gld. Thyreoidea.
Ukurannya ± 6 x 4 x 2 mm, ± 50 grDibungkus oleh False Capsule Gld. ThyreoideaProduksi Hormon Parathormon
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Produksi Hormon :
o Dari CORTEX1. MINERALOCORTICOID (= Aldosterone)2. GLUCOCORTICOID (= Cortisone/Cortisol)3. SEX HORMONE
o Dari MEDULLA :1. ADRENALINE2. NORADRENALINE
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Ukuran panjang ± 14 – 18 cm, ± 70 gramTerletak melintang dari DUODENUM (pada sisi
kanan) ke LIEN (sisi kiri)Dibelakang GASTERDicavum abdominis spatium RetroperitonealeTerdiri dari : CAPUT, CORPUS dan CAUDAAda ductus excretorius = DUCTUS
PANCREATICUS bermuara pada DUODENUM
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Gabungan KEL. EKSOKRIN dan KEL. ENDOKRINBagian KEL. EKSOKRIN yang punya Ductus
PancreaticusBagian KEL. ENDOKRIN yaitu bagian PULAU-
PULAU LANGERHANS dari Pancreas, terdiri sel :o Sel ά Hormon GLUCAGONo Sel β Hormon INSULIN
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Terletak :o Pada Mediastinum Superioro Tepat dibelakang Manubrium Sternio Didepan pembuluh darah besar
jantungTerdiri dari 2 LobusPada orang dewasa Regressi pada >
20 tahunProduksi hormon THYMOSIN
pengaturan Immunologis
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