Discovered and studied in the late 1800s, Amphicoelias fragillimus is one of the

Question

Discovered and studied in the late 1800s, Amphicoelias fragillimus is one of the largest known vertebrate species. The adult size is estimated to be 40-60 meters (130-200 ft) in length and 122 tons in weight. Based on anatomical estimates, the brain of A. fragillimus is 16 m above the heart, and their feet are 6 m below their heart when standing. Despite its massive size, it is assumed that all the physiological systems of the species are efficient such that they survived natural selection during Jurassic Period Design a circulatory system that allows for efficient bulk transport of blood to theLPa tissues Feet (1) What type of heart do you think it had based on the hearts of existing species (aumber of atria, ventricles, separation of the chambers, types of myocardium (2) How was blood pressule adjusted in response to the shifts in the head position relative to the heart? (3) How did gravity affect the blood pressure in different parts of the body? (4) Does your design of the circulatory system change if d. fragillimas turned out to be an aquatic species

Explanation / Answer

What type of heart you think it had based on the hearts of existing species (number of atria, ventricles, separation of chambers, type of myocardium)

Phylogenetic bracketing and physiological conditions suggest that this dinosaur had a four-chambered heart (two atria, two ventricles), complete separation of pulmonary and body blood, and straited involuntary myocardium; so that it can generate the blood pressure necessary to supply the brain in a raised head with blood.

How was blood pressure adjusted in response to the shifts in the head position relative to the heart.

The dinosaur able to adjust the blood pressure when it shifts neck upright or downwards as required high blood pressure can be generated by some hypothetical soft tissue structures such as a rete mirabile or hypertrophied cardiac and arterial structures, which seen in giraffes.

How did gravity affect the blood pressure in different parts of body?

The effect of gravity is obvious as height of this dinosaur is 200 feet. The primary blood pressure problems thought to be occurred in the neck region. In the neck, the gravity tends to reduce the blood pressure which is cope by the advance circulatory system.

Does your design of the circulatory system changes if dinosaur turned to be an aquatic species?

Yes, the design of circulatory system will change if dinosaur turned be an aquatic species. In aquatic conditions heart will occur nearer the mid-body, and long vascular lungs. All factors will be changed related to the gravitational environment.

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