Atrioventricular Anatomy and valve structure Gills Pancreas Secondary Hypothalamus lamellae Left atrium Lumen of artery Sino – Atrial Capillary Node Mitochondrion Adrenal gland Nuclear Loop of Henle membrane Kidney (envelope) Liver Chromosome Diaphragm Ribosome Intercostal Chloroplast muscle Thylakoid Spiracle membrane Trachea Pulmonary vein
Anatomy and structure Pancreas Hypothalamus Left atrium Sino – Atrial Node Adrenal gland Loop of Henle Kidney Liver Diaphragm Intercostal muscle Spiracle Trachea Pulmonary vein Atrioventricular valve Gills Secondary lamellae Lumen of artery Capillary Mitochondrion Nuclear membrane (envelope) Chromosome Ribosome Chloroplast Thylakoid membrane
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