26 Maret 2010Struktur Hewan/Any Aryani/Bio1 DARAH & LIMFE

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26 Maret 2010Struktur Hewan/Any Aryani/Bio7 BELUM MEMILIKI JANTUNG  VERTEBRATA MEMILIKI BAGIAN/DAERAH SISTEM PEREDARAN YANG BERSIFAT KONTRAKTIL & BERFUNGSI UNTUK MEMOMPA DARAH ORGAN KONTRAKTIL TERSEBUT TERLETAK DIANTARA : DUKTUS CUVIERI, AORTA VENTRAL & VENA HEPATIKA

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26 Maret 2010Struktur Hewan/Any Aryani/Bio9 VENA BESAR KELEP SINOATRIAL KELEP ATRIOVENTRIKULAR KELEP SEMILUNAR

26 Maret 2010Struktur Hewan/Any Aryani/Bio10 AORTA VENTRAL AORTA DORSAL AORTA LATERAL DORSAL KAPILER INSANG VENTRICLE ATRIUM

26 Maret 2010Struktur Hewan/Any Aryani/Bio11 Vena Pulmonalis Ventrikel Carotid Interna Carotid Externa ATRIUM VENTRICLE

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26 Maret 2010Struktur Hewan/Any Aryani/Bio13 Ventrikel Vena Pulmonalis Foramen Panizzae AORTA LEFT ATRIUM RIGHT ATRIUM VENTRICLES RIGHT ARCH LEFT ARCH

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26 Maret 2010Struktur Hewan/Any Aryani/Bio15 Role of the Foramen of Panizza in the crocodilian circulatory system: When a crocodilian is above water and breathing air, the semilunar valve in the right aorta remains closed because of higher pressure in the left & right aorta (higher than in the right ventricle). As a result, the right aorta receives blood from the left aorta (so both aortas carry oxygenated blood) and blood from the right ventricle (low in oxygen) passes only into the pulmonary artery (and goes to the lungs). When a crocodilian is under water and not breathing, right ventricular pressure increases due to pulmonary resistance (vasoconstriction of blood vessels supplying the lungs). As a result, the semilunar valve in the right aorta is now forced open so some of the blood from the right ventricle now enters the right aorta rather than the pulmonary artery. This means that, rather than going to the lungs (where there is little or no oxygen anyway because the crocodilian is under water & not breathing), some of the blood enters the systemic (body) circulation. This means that vital organs & tissues (such as skeletal muscles and the central nervous system) will get an increased blood supply and additional oxygen. This, in turn, allows a crocodilian to stay underwater longer (which is most important because many crocodilians hunt by remaining underwater and 'ambushing' prey that come for a drink or to cool off).

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26 Maret 2010Struktur Hewan/Any Aryani/Bio18 R.A R.V Ventrikel Vena Pulmonalis LENGKUNG AORTA KANAN

26 Maret 2010Struktur Hewan/Any Aryani/Bio19 Vena Pulmonalis Ventrikel ATRIUM VENTRICLE ATRIUM VENTRICLE LENGKUNG AORTA KIRI

26 Maret 2010Struktur Hewan/Any Aryani/Bio20 JANTUNG

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26 Maret 2010Struktur Hewan/Any Aryani/Bio22 SECARA HISTOLOGIS, JANTUNG TERDIRI DARI : 1.TUNIKA INTERNA (ENDOKARDIUM) TERSUSUN ATAS SEL ENDOTELIUM PIPIH & LAPISAN SUBENDOTELIUM YANG TEBAL (JARINGAN IKAT, OTOT POLOS & SERABUT ELASTIS) LAPISAN SUBENDOKARDIAL (JARINGAN IKAT YANG MENGANDUNG VENA, SARAF & CABANG-CABANG SISTEM PENGHANTAR IMPULS) 2. TUNIKA MEDIA (MIOKARDIUM) TERDIRI ATAS SEL-SEL OTOT JANTUNG : 1. KONTRAKTIL, 2. YANG MENIMBULKAN & MENGHANTARKAN IMPULS 3. TUNIKA EKSTERNA (EPIKARDIUM) LAPISAN VISERAL PERIKARDIUM YANG MEMBUNGKUS JANTUNG, TERDIRI DARI JARINGAN IKAT (SERABUT KOLAGEN, ELASTIN & SEL-SEL LEMAK) & SEL EPITEL PIPIH (MESOTEL)

26 Maret 2010Struktur Hewan/Any Aryani/Bio23 JANTUNG MAMALIA TERDIRI ATAS 4 RUANGAN, YAITU : ATRIUM KIRI, ATRIUM KANAN, VENTRIKEL KIRI & VENTRIKEL KANAN DARAH DARI SELURUH TUBUH  ATRIUM KANAN  LUBANG ATRIO-VENTRIKULAR KANAN (VALVULAE TRIKUSPIDALIS  VENTRIKEL KANAN  ARTERI PULMONALIS  PULMO DGN VALVULAE SEMILUNARIS DARAH DARI PARU-PARU  VENA PULMONALIS  ATRIUM KIRI  LUBANG ATRIO-VENTRIKULAR KIRI (VALVULAE BIKUSPIDALIS =VALVULA MITRALIS)  VENTRIKEL KIRI  TRUNKUS AORTIKUS DGN VALVULAE SEMILUNARIS

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26 Maret 2010Struktur Hewan/Any Aryani/Bio27 AORTA ARTERI PULMONER ATRIUM KIRI KATUP SEMILUNAR VENA PULMONER KATUP ATRIOVENTRIKEL (BICUSPIDALIS) VENTRIKEL KIRIVENTRIKEL KANAN VENA CAVA POSTERIOR KATUP ATRIOVENTRIKEL (TRICUSPIDALIS) KATUP SEMILUNAR VENA PULMONER ATRIUM KANAN VENA CAVA ANTERIOR ARTERI PULMONER

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