BIOL 1202 Study Guide - Final Guide: Oviduct, Anterior Pituitary, Vacuole
Document Summary
Concept 42. 1: circulatory systems link exchange surfaces with cells throughout the body. Transport systems functionally connect the organs of exchange with the body cells. Simple animals like cnidarians have a body wall only 2 cell-layers thick between external environments and gastrovascular cavity. Gastrovascular cavity functions both in digestion and circulation. More complex animals have two types of circulatory system. Open circulatory system= blood bathes the organs directly (arthropods and most molluscs) Closed circulatory system= blood is confined to vessels and is distinct from the interstitial fluid (some invertebrates and all vertebrates) Both of these types of systems have 3 basic components: a circulatory fluid (blood, a set of tubes (blood vessels, a muscular pump (the heart) Clicker: an open circulatory system _____: does not have blood vessels, allows blood and interstitial fluid to mix with each other, does not have a heart to pump the blood, consists of a gastrovascular cavity. Concept 42. 2: coordinated cycles of heart contraction drive
