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Biology 2 - C05 - 05

🧬📗1️⃣ Module 5 - Animal Circulation: Invertebrates & Vertebrates - SET 5

QuestionAnswer
Animal circulation Movement of blood, nutrients, gases, and wastes in animals.
Open circulatory system Hemolymph bathes organs directly; low pressure; arthropods.
Closed circulatory system Blood confined to vessels; high efficiency; vertebrates.
Hemolymph Fluid in open systems; mixture of blood and interstitial fluid.
Blood Fluid in closed systems; transports gases, nutrients, wastes.
Diffusion (invertebrates) Direct gas/nutrient exchange in simple animals like flatworms.
Hydrostatic skeleton Fluid-filled cavity aiding movement and internal transport.
Two-chambered heart Found in fish; one atrium and one ventricle.
Single circulation Blood passes through heart once per circuit; fish.
Three-chambered heart Amphibians; two atria and one ventricle.
Double circulation Pulmonary + systemic circuits; amphibians, reptiles, mammals.
Cutaneous respiration Gas exchange through skin; amphibians and earthworms.
Four-chambered heart Birds and mammals; complete separation of blood.
Right atrium Receives deoxygenated blood from body.
Left atrium Receives oxygenated blood from lungs.
Right ventricle Pumps deoxygenated blood to lungs.
Left ventricle Pumps oxygenated blood to body.
Valves Prevent backflow; ensure one-way blood flow.
Systemic circuit Delivers oxygenated blood to body tissues.
Pulmonary circuit Carries deoxygenated blood to lungs for oxygenation.
Created by: francisslavin002
 

 



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