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The bottom of the heart is more muscular because that is where the blood exits the heart: deoxygenated blood has to be forced out of the right ventricle into the pulmonary artery, and oxygenated blood has to be forced from the left ventricle into the aorta - the force of the contraction is what sends the blood circulating all around the body & so it takes pretty hefty muscle to do the job.
What else can I help you with?
Why does heart beat increase during exercise?
Because the heart has to pump more oxygen than usual to your muscles
Why do boys need more calories than girls?
because they have bigger muscles, heart, gut everything.
How do heart muscles differ from other muscles?
It can produce and re-energies red blood cells as well as more directly absorb oxygen than other mussels.
What takes more of them to frown than smile?
It take more facial muscles to frown than to smile.
Why does heart rate increase when Chewing?
Because you need more energy for your jaw muscles to move like that than to stay still.
Why does a child's heart beat faster than an adult's?
They are constantly growing and being energetic so their muscles need more blood.
Why does your cardiovascular system need exercise?
Very basically the blood provides the body's working muscles with oxygen. During a work-out, the muscles are using up more oxygen than they would at rest. Various mechanisms transmit this information to the heart which increases the heart rate to push blood through the lungs around the body faster to get more oxygen to the muscles.
What are the crus muscles?
The crus muscles (there are two) are muscles that connect the bottom of the diaphragm to the spine. These muscles assist in breathing. When we inhale, the crus muscles pull the bottom of the diaphragm towards the spine, allowing more space for the expansion of the lungs. They release the diaphragm when we exhale so that the diaphragm may return to its relaxed, dome-shaped position. The left crus muscle is slightly shorter than the right crus muscle.
About how many muscles do you have?
your body has 650 muscles to be correct and its more complicated yet more efficient than any machine ever built
What about the other parts of the heart are they muscles too?
No. The heart is an organ. Organs are made of more than one tissue. The valves of the heart are made of strong connective tissues. They are so strong and large they form what is called the skeleton of the heart and helps to give it shape.
Are strained muscles voluntary or involuntary muscles?
A "strained"muscle is one that has been used more than normal, and is a voluntary muscle. Involuntary muscles are those that work without your having to think about it (heart for example) and are very difficult to "strain." Muscles that move when you choseto use them ( arms, legs) are more likely to suffer stress injuries.
How many types of muscles are there in your body?
there are more than 500 muscles in the body!
