Details Title: 212 Description: Respiration Total Flash Cards: 23 Created: 03/09/2007 13:18:11		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Biology Flashcards
Cards in this set: Term respiration Definition uptake of oxygen from environment and disposal of carbon dioxide into environment Term gill Definition a localized extension of the body surface of many aquatic animals, specialized for gas exchange Term dermal gills Definition elaboration of body wall - increase SA; gas exchange across two thin epithelia -decrease d; epithelial ciliated- increase p Term operculum Definition in osteichthyans, a protective bony flap that covers and protects the gills Term gill arch Definition gill attachment Term gill filament Definition highly vascularized; picks up oxygen from water through lamellae Term countercurrent exchange Definition the opposite flow of adjacent fluids that maximizes transfer rates Term insect trachae Definition series of rigid tubes, lined by exoskeleton; reaches every cell; movement via diffusion; closeable spiracles to decrease water loss; circulation system not involved Term spiracle Definition prevent water loss; determined by gas loss Term lung Definition expandable internalized sacs supported by body; in thoracic cavity and covered by membrane Term mammalian tranchea Definition windpipe; C-shape rings of cartilage maintain the shape Term bronchus Definition two branches leading to each lung Term bronchioles Definition one of the fine branches of the bronchus that transports air to the lungs Term alveolus Definition one of the dead-end, multilobed air sacs that constitute the gas exchange surface of lungs Term diaphram Definition a sheet of muscle that forms the bottom wall of the thoracic cavity in mammals; active in ventilating the lungs Term inhalation Definition mechanisms of contracting of diaphram and rib muscles contract; occurs via negative pressure and increases volume Term exhalation Definition thorax and lungs elastic; relaxed muscles, decrease volume Term bird lung Definition one-way flow through lung; air sacs and lung; lung only site of gas exchange Term bird air sacs Definition ventilates the lungs; forcing air in one direction through tiny // tubes called parabronchi Term partial pressures Definition measure of gas quantity Term vertebrate Hemoglobin (Hb) Definition iron- containing protein in red blood cells that reversibly binds oxygen Term oxyhemoglobin Definition Hb + oxygen Term deoxyhemoglobin Definition Hb alone