Sinoatrial node part of the autonomic nervous system adjusts the heart rate and the arteriole diameter to regulate blood pressure through negative feedback
The SA (sinoatrial) node is generates an electrical signal that can causes the upper heart of the chambers (atria) to contract. The signal and then passes through the AV (atrioventricular) node to the lower of the heart chambers (ventricles), causing them to contract, or to pump. The SA node is considered the pacemaker of heart.
The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and also rate in a healthy heart. Hence, the SA node is also referred to as the natural pacemaker of the heart
To know more about Sinoatrial node visit:
brainly.com/question/13135479
#SPJ4
Meh isiehe isushe sisikandbfjs island fish skskwj
The time that should be devoted to specific training before starting sports participation depends on the sport.
To practice a sport it is necessary to follow a series of previous preparation activities to avoid injuries and overexertion that affect the body.
Therefore, if a person is going to start practicing a sport, he should start with short workouts that activate his body and adapt him to a training routine.
Subsequently, you should increase the intensity of your workouts without overexerting your muscles. Once the person is in good health conditions (between 6 and 12 months) he can begin to perform specific exercises for the sport that he is going to practice.
The specific exercises depend on the sport to be practiced, for example:
- Soccer mainly requires speed and strength in the lower body to be able to run with the ball.
- Cycling requires endurance, flexibility and strength to be able to ride a bicycle for several hours at a time without feeling pain and being able to climb hills.
- Basketball requires speed, flexibility and strength throughout the body to be able to run across the court with control of the ball.
Specific exercises must be practiced for at least 6 months so that the body has adapted to the exercise and the quality of the player has improved.
Learn more in: brainly.com/question/11915398
I think because they all had a good purpose
