UGA BIOL 1108 - Circulation and Gas Exchange (12 pages)

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Circulation and Gas Exchange



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Circulation and Gas Exchange

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Pages:
12
School:
University of Georgia
Course:
Biol 1108 - Principles Bio Ii

Unformatted text preview:

Body size and shape to keep cells in contact with their enviroment Circulatory System moves fluid between each cell s surroundings and the environment Exchange gases Absorb nutrients Dispose of waste Figure 42 2 Circular canal Mouth Gastrovascular cavity Mouth Pharynx Radial canals 5 cm a The moon jelly Aurelia a cnidarian 2 mm b The planarian Dugesia a flatworm Circulatory fluid Interconnecting vessles Muscular pump Figure 42 3 a An open circulatory system b A closed circulatory system Heart Heart Interstitial fluid Hemolymph in sinuses surrounding organs Pores Blood Small branch vessels in each organ Dorsal Auxiliary vessel hearts main heart Tubular heart Ventral vessels Receives Blood Pumps blood In a house Atrium entry way to a house vents pump out air a Single circulation b Double circulation Pulmonary circuit Gill capillaries Lung capillaries Artery Heart A Atrium A A V Right Ventricle V V Left Vein Systemic capillaries Body capillaries Systemic circuit Key Oxygen rich blood Oxygen poor blood Amphibians Pulmocutaneous circuit Figure 42 4 Atrium A Right Lung capillaries Lung capillaries Right systemic aorta A V Right Left Pulmonary circuit Pulmonary circuit Lung and skin capillaries Atrium A Mammals and Birds Reptiles Except Birds A V Left Left systemic aorta Incomplete septum A V Right A V Left Ventricle V Systemic circuit Systemic circuit Key Oxygen rich blood Oxygen poor blood Systemic capillaries Systemic capillaries Systemic capillaries Figure 42 5 Systemic circuit 3 chambered heart no septum pulmocutaneous circuit skin and lung life cycle partially in H2O Figure 42 6 Superior vena cava Capillaries of head and forelimbs Pulmonary artery Capillaries of right lung Pulmonary vein Right atrium Right ventricle Inferior vena cava 4 chambered heart septum pulmonary circuit just lungs Pulmonary artery Aorta Capillaries of left lung Pulmonary vein Left atrium Left ventricle Aorta Capillaries of abdominal organs and hind limbs Gills Trachea Lungs Gills Figure 42 22



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