I II. Animal Structure and Function.
Circulation and Gas Exchange
(Functional Anatomy of Cardio-Vasculatory
& Respiratory Systems)
The heart (model): 1 – right ventricle, 2 – left ventricle, 3 – right auricle, 4 – left auricle, 5 – precava, 6 – postcava, 7 – systemic aorta, 8 – pulmonary aorta, 9 – pulmonary veins, 10 – bicuspid valve, 11 – tricuspid valve.
Muscular artery: A – tunica intima, B – internal elastic lamina separating tunica intima and tunica media, C – tunica media, D – collagenous adventitia.
Medium vein (A) and muscular artery (B).
Arteriole in the longitudinal section: A - endothelial cells, B – muscle cells of the tunica media.
Trachea in the longitudinal section: A – the columnar epithelium, B – salivary glands, C – cartilaginous rings, D – fibrous coat.
Lung: A – pleura, B – pulmonary bronchi, C – pulmonary alveoli.
Lung (high power): A – small blood vessel, B - pulmonary alveoli.
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