A paired vein that is part of the venous drainage system in certain vertebrates, connecting to the cardinal veins.

उप-कार्डिनल नस

English Usage: The subcardinal veins play an important role in the development of the circulatory system in embryos.

Hindi Usage: उप-कार्डिनल नसें भ्रूण में परिसंचरण प्रणाली के विकास में महत्वपूर्ण भूमिका निभाती हैं.