For this reason, capillaries are known as exchange vessels. Groups of capillaries within a tissue reunite to form small veins called venules. Venules collect blood from capillaries and drain into veins. Veins are the blood vessels that carry blood back to the heart. They may contain valves which stop blood flowing away from the heart. The heart works by following a sequence of electrical signals that cause the muscles in each chamber to contract in a certain order.
Darn Cat or DC is a wily, adventurous Siamese tomcat who lives with two young women, suburbanite sisters Ingrid Inkie (Dorothy Provine) and Patricia Patti Randall (Hayley Mills), whose parents are traveling abroad at the time of the story.
Tabby cat. Mackerel tabby, with the striped pattern. A tabby is any domestic cat that has a coat featuring distinctive stripes, dots, lines or swirling patterns, usually together with a mark resembling an 'M' on its forehead. Tabbies are sometimes erroneously assumed to be a cat breed. In fact, the tabby pattern is found in many breeds, as well as among the general mixed-breed population.