MICROANATOMY

Detailed explanation-1: -When the muscles start to work, they need more oxygen so the respiratory system responds by getting more oxygen into the lungs. The blood carries greater amounts of oxygen and the heart responds to pump more oxygenated blood around the body. Immediate effects can be visible in hot, sweaty and red skin.

Detailed explanation-2: -As we start exercising heart rate increases and beats with greater force. Exercise makes the body work harder and therefore muscles require more oxygen to continue to work effectively. Heart rate is increase by the body releasing adrenaline – the hormone that signals the heart to pump faster and harder.

Detailed explanation-3: -Why Do I Have An Elevated Heart Rate After Exercise? Physical activity increases your heart rate because your muscles need much more oxygen and nutrients than what is available at resting levels. In order to supply this oxygen, the heart has to beat faster to pump more blood per minute.

Detailed explanation-4: -Moderate-intensity physical activity causes a slight increase in breathing and heart rate. However, you are still able to talk but not sing during the activity. You may also be perspiring.

Detailed explanation-5: -As your exercise, your heart contracts faster and increases blood circulation, resulting in oxygenated blood, reaching the muscles more quickly. As the body moves, it requires more oxygen; hence the heart will have to meet the demand by pumping more blood, which increases the heart rate.