FDSC 2000 Chapter : Chapter 4 PART II NOTES 2015
Document Summary
Concept 42. 1: circulatory systems link exchange surfaces with cells. Gastrovascular cavities example of a circulatory system (figure 42. 2: simple animals like cnidarians (jellyfish) have a body wall only 2 cell-layers thick between external environment & gastrovascular cavity, gastrovascular cavity functions both in digestion and circulation. Concept 42. 2: coordinated cycles of heart contraction drive double. Valve) separates the atrium from the ventricle; once this valve opens blood makes its way into the right ventricle: oxygenated blood. Pathway to blood through the heart (deoxygenated blood in blue; What you see from your skin are the veins: function of the valves: prevents black flow of blood. Concept 42. 3: patterns of blood pressure and flow reflect the structure and. Slow to provide enough time for diffusion. Oxygen does not jump out of the blood and into the cell it takes time: exchange needs time to occur, venules: small veins that branch off into larger veins. Concept 42. 4: blood components function in exchange, transport, and.
