I think the answer to this is The Label.
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
<span>Agility and reaction time are two components of health-related fitness.
-false
</span>
Answer:
B. amylase
Explanation:
Amylase, any member of a class of enzymes that catalyze the splitting of a compound by addition of a water molecule of starch into smaller carbohydrate molecules such as a molecule composed of two glucose molecules. Two categories of amylases, denoted alpha and beta, differ in the way they attack the bonds of the starch molecules
Https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/fitness/art-20048269
