Answer:
This electrical signal start in the sinoatrial node generates an electrical impulse. From this, the signal passes through the atrioventricular node, which stops the signal for a brief moment and sends it through the muscle fibers of the ventricles, stimulating its contraction.
Explanation:
The electrical impulses generated by the myocardium stimulate the heartbeat. This electrical signal originates in the sinoatrial node located in the upper part of the right atrium. When the sinoatrial node generates an electrical impulse, it stimulates the contraction of the atria. From this, the signal passes through the atrioventricular node, which stops the signal for a brief moment and sends it through the muscle fibers of the ventricles, stimulating its contraction.
Smoking or vaping is not going directly into your blood stream unlike when eating marijuana it goes directly into your blood stream becoming more harmful in higher dosage and the effects are much faster but come at u expected times
Answer:
A
Explanation:
Carbohydrates give energy and if your low in them then you will have less energy.
Answer:
A: The five components of physical fitness are
cardiovascular endurance, muscular strength,
muscular endurance, flexibility and body composition,
according to Fit Day.
Answer: It can cause injury
Explanation: It increases the risk of injury for beginners as they are newer to running and it is not ideal to add faster segments into training until you reach a higher fitness level
