Some dinosaurs ate lizards, turtles, eggs, or early mammals. Some hunted other dinosaurs or scavenged dead animals. Most, however, ate plants (but not grass, which hadn't evolved yet). Rocks that…
Why do cats always land on their feet? Cats owe some of their nine lives to their unique skeletal structure. Cats don’t have a collarbone, and the bones in their spine are more flexible than other…
(Encyclopedia) hydrocephalushydrocephalushīˌdrəsĕfˈələs [key], also known as water on the brain, developmental (congenital) or acquired condition in which there is an abnormal accumulation of body…
(Encyclopedia) carding, process by which fibers are opened, cleaned, and straightened in preparation for spinning. The fingers were first used, then a tool of wood or bone shaped like a hand, then…
(Encyclopedia)
CE5
Human skeleton
skeleton, in anatomy, the stiff supportive framework of the body. The two basic types of skeleton found among animals are the exoskeleton and the endoskeleton.…
INVERTEBRATE GROUPSECHINODERMS CNIDARIANS SPONGES INSECTS MOLLUSKS ANNELID WORMS HOW DO ANIMALS SURVIVE WITHOUT BONES? DO INVERTEBRATES’ EXOSKELETONS GROW? FIND OUT MOREAbout 95 percent of…
(Encyclopedia) Matthiessen, PeterMatthiessen, Petermăthˈəsən [key], American writer, naturalist, and adventurer, b. New York City, grad. Yale (1950). A founder (1951) of the literary Paris Review, he…
(Encyclopedia) serotoninserotoninsĕrˌətōˈnĭn [key], organic compound that was first recognized as a powerful vasoconstrictor occurring in blood serum. It was partially purified, crystallized, and…
(Encyclopedia)
CE5
Bones of skull
skull, the skeletal structure of the head, composed of the facial and cranial bones. The skull houses and protects the brain and most of the chief sense organs;…
