Biology Vocab #2
About this set
Created by:
kendal_harris on January 10, 2012
Subjects:
Log in to favorite or report as inappropriate.
Order by
28 terms
Terms | Definitions |
|---|---|
 altricial | describes organisms that are not very developed when born and that require care or nursing |
| amplexus | the copulatory embrace of amphibians |
| brood patch | on the abdomen of birds, a thickened, featherless patch of skin that is used for incubating eggs |
| chemoreception | the ability to detect chemicals in the environment |
| columella | the axis of the cochlea in the ear bones of some animals |
| crop | in the digestive systems of birds and some invertebrates, a sac or pouch that temporarily stores food |
| duodenum | the first section of the small intestine |
| external fertilization | the union of gametes outside the bodies of the parents, as in many fishes and amphibians |
| gizzard | an enlargement of the digestive tract of some invertebrates, such asannelids and insects, that grinds food; amuscular region in the digestive tract of birds that grinds and softens food |
| ileum | the middle portion of the small intestine where many nutrients are absorbed |
| internal fertilization | fertilization of an egg by sperm that occurs inside the body of a female |
| jacobson's organ | an olfactory sac that opens into the mouth and is highly developed in reptiles |
| lateral line | a faint line visible on both sides of a fish's body that runs the length of the body and marks the location of sense organs that detect vibrations in water |
| mesentery | a membrane that attaches the small intestine to the abdominal wall |
| nictitating membrane | a third eyelid found under the lower eyelid of many vertebrates, including birds, reptiles, and amphibians |
| optictectum | the largest part of the midbrain of a fish; receives and processes information from the fish's visual, auditory, and lateral-line systems |
| oviduct | the tube that leads from an ovary to the uterus |
| oviparity | in egg-laying amniotes, a reproductive method in which the female's reproductive tract encloses each egg in a tough, protective shell |
| ovoviviparity | in amniotes, a reproductive method wherein shelled eggs are produced, develop, and sometimes hatch inside the body of the mother |
| placenta | the structure that attaches a developing fetus to the uterus and that enables the exchange of nutrients, wastes, and gases between the mother and the fetus |
| precocial | describes a species of birds or mammals whose young are born at an advanced stage of development, with open eyes and the ability to walk and run almost immediately |
| proventriculus | the first of the two chambers in the stomach of a bird |
| spawning | a method of reproduction in fish, amphibians, mollusks, and crustaceans in which eggs or sperm are deposited into water |
| swim bladder | in bony fishes, a gas-filled sac that is used to control buoyancy |
| tympanic membrane | the eardrum |
| vas deferens | a duct through which sperm move from the epididymis to the ejaculatory duct at the base of the penis |
| vent | in some animals, the body opening to which the cloaca is connected and through which wastes exit |
| viviparity | in amniotes, a reproductive method in which eggs that lack shells are produced and develop inside the body of the mother, who then gives birth to the offspring |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.