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.
The domestic cat (Felis catus or Felis silvestris catus) is a small, usually furry, domesticated, and carnivorous mammal. They are often called housecats when kept as indoor pets or simply cats when there is no need to distinguish them from other felids and felines.he female utters a loud yowl as the male pulls out of her because a male cat's penis has a band of about 120â150 backwards-pointing penile spines, which are about 1 mm long; upon withdrawal of the penis, the spines rake the walls of the female's vagina, which is a trigger for ovulation.