Which is the second heart of the human body?
Answer
Verified
392.7k+ views
Hint: Humans have only one heart anatomically. The calf muscles (soleus muscles) are known as the "second heart" because they are important for returning venous blood from the periphery to the heart.
Complete answer:
Your calf veins serve as a storage for blood that your body does not require in circulation at any given time. Muscle venous sinuses are the veins that serve as reservoirs. Blood is squeezed out of veins and moved along the venous system as the calf muscle contracts. Leg veins have one-way valves that keep blood flowing in the right path toward the heart. These valves also prevent blood from flowing backwards down your legs veins due to gravity.
When you walk, your foot also contributes to the pumping process. There is also a (smaller) venous reservoir in the foot. The foot venous reservoir blood is squeezed out and ‘primes' the calf reservoir during the early motion of taking a stride, as you put weight on your foot.
The calf muscle then contracts and pumps blood up the leg against gravity in the later stages of a step. The valves keep the blood flowing in the right direction and keep gravity from pulling it back down.
When you are immobile for an extended period of time, such as in an aeroplane or car seat, or sitting at a desk for hours, your calf muscle does not contract much and blood pools.
That is why walking is so beneficial to leg circulation! Walking reduces blood pooling and aids in the prevention of potentially dangerous blood clots known as deep vein thrombosis, or DVT.
In addition, due to a breakdown of the one-way valves, a disease known as venous insufficiency, sometimes known as venous reflux, blood can pool in your legs. The valves are not functioning properly in this situation, allowing blood to flow backwards down your leg.
The valves are described as "leaky". Heavy, fatigued, achy, throbbing, painful legs, ankle swelling, bulging varicose veins, cramping, itching, restless leg, skin discoloration, and even skin ulceration are all signs of venous insufficiency. Venous insufficiency is a widespread condition that affects more than 40 million people in the United States.
Note:
Leg discomfort and edoema are common symptoms of DVTs. They may or may not create any symptoms. DVTs are risky because a blood clot can break off and move through your bloodstream, eventually settling in your lungs.
Complete answer:
Your calf veins serve as a storage for blood that your body does not require in circulation at any given time. Muscle venous sinuses are the veins that serve as reservoirs. Blood is squeezed out of veins and moved along the venous system as the calf muscle contracts. Leg veins have one-way valves that keep blood flowing in the right path toward the heart. These valves also prevent blood from flowing backwards down your legs veins due to gravity.
When you walk, your foot also contributes to the pumping process. There is also a (smaller) venous reservoir in the foot. The foot venous reservoir blood is squeezed out and ‘primes' the calf reservoir during the early motion of taking a stride, as you put weight on your foot.
The calf muscle then contracts and pumps blood up the leg against gravity in the later stages of a step. The valves keep the blood flowing in the right direction and keep gravity from pulling it back down.
When you are immobile for an extended period of time, such as in an aeroplane or car seat, or sitting at a desk for hours, your calf muscle does not contract much and blood pools.
That is why walking is so beneficial to leg circulation! Walking reduces blood pooling and aids in the prevention of potentially dangerous blood clots known as deep vein thrombosis, or DVT.
In addition, due to a breakdown of the one-way valves, a disease known as venous insufficiency, sometimes known as venous reflux, blood can pool in your legs. The valves are not functioning properly in this situation, allowing blood to flow backwards down your leg.
The valves are described as "leaky". Heavy, fatigued, achy, throbbing, painful legs, ankle swelling, bulging varicose veins, cramping, itching, restless leg, skin discoloration, and even skin ulceration are all signs of venous insufficiency. Venous insufficiency is a widespread condition that affects more than 40 million people in the United States.
Note:
Leg discomfort and edoema are common symptoms of DVTs. They may or may not create any symptoms. DVTs are risky because a blood clot can break off and move through your bloodstream, eventually settling in your lungs.
Recently Updated Pages
One difference between a Formal Letter and an informal class null english null
Can anyone list 10 advantages and disadvantages of friction
What are the Components of Financial System?
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
What are the possible quantum number for the last outermost class 11 chemistry CBSE
Trending doubts
10 examples of friction in our daily life
The correct order of melting point of 14th group elements class 11 chemistry CBSE
Difference Between Prokaryotic Cells and Eukaryotic Cells
One Metric ton is equal to kg A 10000 B 1000 C 100 class 11 physics CBSE
What is the specific heat capacity of ice water and class 11 physics CBSE
State and prove Bernoullis theorem class 11 physics CBSE