The superior vena cava (or cranial vena cava in animals) is above the heart, and forms from a convergence of the left and right brachiocephalic veins, which contain blood from the head and the arms. Origin: 1590â1600; New Latin vena cava (sg), venae cavae (pl), 'hollow vein/veins'.
Benefits of Neem for Dogs. Neem leaves and neem oil benefit dogs in numerous ways. The leaves can be used to boost the immune system of dogs in general, and to repel intestinal parasites. Neem oil can also be used to treat skin problems, repel fleas, mosquitoes, and ticks. Read this page to see how neem can benefit the health and wellbeing of dogs.
Neem oil is a mixture of components. Azadirachtin is the most active component for repelling and killing pests and can be extracted from neem oil. The portion left over is called clarified hydrophobic neem oil.eem oil is practically non-toxic to birds, mammals, bees and plants. Neem oil is slightly toxic to fish and other aquatic organisms. Azadirachtin, a component of neem oil, is moderately toxic to fish and other aquatic animals.