Yes
Category: Zoology
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Assisted reproductive technology (ART), scientist data,proje…
Assisted reproductive technology, infertility.data about the scientists who made a autonomous discoveries and inventions in the human body,genome, genetic variation…etc
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Apa yang di maksud dengan daur air? Jelas kan proses nya sec…
penjelasan tentang daur air secara singkat
jawab:
Daur air adalah suatu siklus pada air saat mengalami perubahan bentukbentuk antara cair, gas, dan padat.
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Blood circulation
How do valves in the mammalian heart and veins ensure a unidirectional flow of blood, and what happens to the circulatory system if they fail to close properly?
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Zoology Question
Comparison: Open vs. Closed Circulatory Systems
Feature Open Circulatory System Closed Circulatory System Basic Concept Blood is pumped into open body cavities and directly bathes the organs. Blood is contained within a continuous network of vessels (arteries, veins, capillaries). Circulating Fluid The fluid is called Hemolymph (a mixture of blood and interstitial fluid). The fluid is distinct and called Blood. Blood Pressure Low pressure; blood flow is slow and less regulated. High pressure; blood flow is fast and highly regulated. Distribution Blood distribution is non-uniform and poorly controlled. Blood flow can be specifically directed to certain organs (e.g., more to muscles during exercise). Exchange Mechanism Nutrients and gases are exchanged directly between hemolymph and cells. Exchange occurs through the thin walls of capillaries. Efficiency Less efficient; suitable for small animals with low metabolic rates. Highly efficient; supports large body sizes and high metabolic activity.
