It’s in the milky way. have a great night/day!
The superior vena cava vessel is highlighted.
The superior vena cava (SVC) is the superior portion of the two vena cava, the great vena cava that carries deoxygenated blood from the systemic circulation back to the right atrium of the heart. This is a short vein with a large diameter (24 mm) that receives a venous return from the upper half of the body, above the diaphragm.
The superior vena cava returns from the lower half, below the diaphragm, through the inferior vena cava. The SVC is located in the right anterior mediastinum. [1] This is the typical location for central venous access through a central venous catheter or a central catheter inserted peripherally. Mentions of "la cava" without any other specification usually refer to SVC.
Learn more about superior vena cava here: brainly.com/question/14700530
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Answer: Longitudinal study.
A longitudinal study is one that involves repeated observations of the same variables over a period of time (in the example, it was four years). The opposite type of study is a cross-sectional study (one that looks at the variables at a given moment).
servering on jury not 100 % sure but thats all i know