Circulatory System

Circulatory system

Equipo 9: Begoña Sánchez González A01731474 Mariana Aragón Sánchez A01740456 José Gerardo Marín Canchola A01731455

Introduction

The following infographic presents a comparison between the circulatory system of a human, a giraffe and a bird. In the same way, the values resulting from the comparative table of the heart of each species are provided with the objective of roughly understanding the structure of each one, the different tasks they perform and the alterations of each circulatory system depending on the lifestyle they lead. Finally through an analysis of each of the parameters we present a discussion for each animal and a final conclusion about the three of them.

Theorical Frame

The cardiovascular system is made up of the heart, which serves as the pumping device, and a closed-loop system of various blood vessels divided into arteries, veins and capillaries. The blood contained is pumped around the closed-loop system and circuit of vessels in a constant circulation around the body (NCI, 2023). Any gravitational change can cause mechanical fluid shifts, given that this system is strongly dependent on the gravitational environment. Sequentially, autonomic effectors influence systemic circulation and cardiac control. Particularly in larger terrestrial vertebrates, gravitational force influences musculoskeletal systems, fluid distribution, and hydrodynamics of the circulation. Since the hydrostatic pressure gradients act in vertical blood columns, any effect is seen as disturbances to the hydrodynamics and distribution of body fluids, leading to the evolution of adaptive countermeasures involving modifications of structure and function.

Comparison Chart

Human

Bird

Giraffe

Conclusion

As a matter of conclusion, and based on the values resulting from the 3 species we can say that the humans, giraffes and birds have complex but unique characteristics in their circulatory system. Each of them shows its characteristics according to its natural structure or physiological needs. The human circulatory system is optimized for endurance and a bipedal lifestyle, giraffes have adapted their systems to overcome problems caused by their elongated necks, and birds possess a system that provides for their high metabolic demand as well as the performance of flying. One of the most remarkable values to highlight in the comparison table is the fact that giraffes and humans both have a Heart Weight / Heart Body Ratio around 0.4% - 0.6%, meanwhile the bird has a 1%. This remarks the higher proportion for the bird's heart.

References

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