Question about Human Body: Circulatory System
Subject Sciences
Sciences
Source Originais Teachy
Originais Teachy
Topic Human Body: Circulatory System
Human Body: Circulatory System
Difficulty Hard
Hard
(Originais Teachy 2024) - Question Hard of Sciences
During an interdisciplinary activity of Physical Education and Science, 6th-grade students conducted an experiment to investigate heart rate and blood circulation. Using heart rate measurement and perceived exertion, the students compared their physiological responses at rest and after practicing different physical activities. When analyzing the collected data, the students observed that heart rate increased proportionally to the physical effort required, demonstrating the circulatory system's ability to respond to the body's demands. Based on this experience and the interaction between the circulatory and locomotor systems, discuss how the speed and type of movement performed can influence the efficiency of oxygen and nutrient transport through the blood, considering the concepts of heart rate and cardiac output.a.
Cardiac output decreases during exercise, regardless of intensity or type, compromising the transport of oxygen and nutrients to the tissues.
b.
Faster and more intense movements require more work from the heart, resulting in a greater cardiac output and efficiency of oxygen and nutrient transport to the tissues.
c.
Exercises involving small muscle groups and low intensity increase heart rate and cardiac output more sharply, optimizing oxygen and nutrient transport.
d.
Movements at a slower pace are preferable as they allow the heart to rest more, reducing cardiac output and improving the efficiency of oxygen and nutrient transport.
e.
Heart rate does not significantly change with the type or speed of movement, keeping cardiac output and oxygen and nutrient transport constant.
Answer sheet:
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