The only way I could answer this is because I just saw one that matches it but to be sure I will copy it here.
Which of these is most responsible for causing eating disorders?
A. Media images
B. A government agency’s website about healthful food choices
C. Regular exercise
D. A university’s website about nutrition research
The correct answer to this is A, media images
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The sa node <u>spontaneously</u> fires at regular intervals.
<h3>What is SA node?</h3>
SA node; an accronym for sinoatrial node is a mass of specialized issue situated in the heart; specifically in the right upper chamber of the heart.
This sinoatrial node help the heart generates electrical stimulus regularly usually between 60 to 100 times per every minutes
<h3>What is heart?</h3>
The heart is a muscular organ and the only organ in the known which helps to pump blood to various parts of the body
- Helps in the mentenance of blood pressure
- It helps to pump oxygenated blood
- It helps to transfer hormones
- Helps to receive deoxygenated blood as well
Learn more about SA node of the heart:
brainly.com/question/9058294
Skin<span> is an elastic covering. It </span>protects<span> you against exposure to dangerous things in the environment such as bacteria. Since they form an elastic cover, they are able to B)Extend and contract for movement.</span>
