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Heart
The heart is a major organ of the body that is found in the circulatory system. It pumps blood throughout the blood vessels. Questions related to the heart should be put here.
8,781 Questions
How did Congenital Heart Defect get its name?
Congenital Heart Defect is a descriptive name. Congenital means present at birth. Defect means a structural problem or abnormality.
Specific defects, combinations of defects, and surgical repairs are often named after the doctor who discovered them.
Did Aaliyah die of heart attack?
Aaliyah had an autopsy to confirm the cause of her death obviously, The cause of her death was severe burns, a blow to the head and severe shock and a overall weak heart. Don't worry she didn't suffer she and five others died instantly on impact.
How do kidney and heart regulate blood pressure and volume?
generally there are special receptors to identify changes in blood pressure.there are osmo receptors and baro receptors present in blood vessels.these sense the changes in blood volume and pressure and pass on information to special centres .
when venous blood flow passes through kidneys these sense the changes in blood volume and pressure.when there is change in blood volume or pressure they release special substance called "RENIN".this renin is released special" JUXTRA GLOMERULAR APPARATUS".
juxtra glomerular apparatus;it includes 3 imp areas.
in afferent arteriole cells called JUXTRA GLOMERULAR CELLS
proximal portion of distal convoluted tubule contains MACULA DENSA.
cells called POLIKISSEN CELLS OR LACIS CELLS.
Renin acts on its substate called angiotensinogen[which is a protein synthesized by liver].then it forms angiotensin1.this reacts with enzyme called angiotensinogen converting factor and forms angiotensin2.this acts on adrenal gland and this release aldosteron which acts on renal tubules and absorb Na+ and also release antidiuretic harmone which absorbs water in renal tubules and effects blood volume and blood pressure.this is sensed by baroreceptors and these send information to higher centres and these higher centers present in medulla send impulses to heart and blood vessels to dilate or contract .thus as a result due to dilation blood pressure decreases or due to contraction bp increases.due to absorption of water blood volume increases or decreases.
THUS KIDNEYS EITHER DIRECTLY AND INDIRECTLY ACT ON HEART TO INFLUENCE BLOOD BP AND VOLUME.
Organs same size as the heart?
The heart's owner hands. If s/he clanchs her/his hand, the size of the fist is in the same size as the heart's size.
What is the order that the blood flows?
From the heart, through the Aorta to the arteries. Pass through several branches and the Capillaries appear. Blood leaves these, and the circulation combines to form the venous flow that re-enters the heart via the Vena cava.
The right side of the heart pumps low-oxygen blood to the?
The right ventricle pumps blood to the lungs.
What kind of tissue is bicuspid aortic valve?
They are composed of 2 or 3 leaflets, each with a fibrous core that is continuous with the annuli fibrosi (fibrous rings of the heart that surround the openings of the heart and serve as attachment sites for cardiac muscle as well as the bicuspid and tricuspid valves)of the cardiac skeleton. They are covered on both sides by fibrocartilage and a thin epithelium. Cordae Tendineae connect each leaflet of the atrioventricular valves (mitral + tricuspid) to the muscular projections (papillae) from the wall of the ventricle and prevent them from prolapsing into the atrial chamber during ventricular contraction.
What do muscle cells in the heart have an unusual high proportion of?
Mitochondria, it takes a lot of energy to keep the engine running 24/7/365.
What is the average heart rate for a 20 month old child?
about 110-120 I think. Check with a pediatrician.
What if the heart does not work right?
Your heart is the muscle responsible for pumping blood around your body. the blood is responsible for delivering Oxygen food and minerals to the various parts of the body that need them. It is also the system that cleans the system so all the used materials and dead cells etc are also removed using the blood. the blood transports antibody's around the system that fight infection and seals up damage to the skin and supply's the materials needed for repairs. the strength of the heart relates directly to the strength that can come from the muscles. and weak blood flow can even effect the eye sight as the clear liquid that exist inside the eyes is not kept as clear. So one can safely say that the heart is central to health and when it starts to play up health can suffer in many different areas of the body.
Can you damage your heart and lungs by running in cold weather?
There's a popular perception, particularly among new runners, that running in cold weather is bad for you. Not so. Unless the temperature is so low that you seriously risk frostbite, it's warm enough to run. Even in those frostbite-threatening lows, carefully chosen clothing can protect you well enough to allow your daily jaunt. Read the rest of this article at: http://www.coolrunning.com/cgi-bin/moxiebin/bm_tools.cgi?print=120;s=2_1;site=1 A link has been provided as well. Have a safe jog!
How do they stop your heart during heart surgery?
The heart is stopped because they are repairing it. This is why it is called a bypass. They are literally passing by the heart . The machines they use work as if it were the heart. imagine trying to repair a leaky faucet if it was still running... Same concept
Why is the left ventricle of the heart so muscular?
The left ventricle pumps blood to all parts of the body and it is more muscular because of the pressure and force required to do this.
What does it mean to have a soft spot in your heart?
It means to have a favorable attitude towards someone; to be already attracted to someone. For example, I can say, "Don't let him be the judge to decide between candidate A and candidate B because the guy has a soft spot in his heart for candidate B and cannot be trusted with an objective and honest choice between the two."
Can the signs of a heart attack feel like heartburn?
You will get short of breath and feel weak like you can't walk and wanna collaps and also sweating my occur and the heart may jump uncontrollably and feel like your dieing
Well, depending on where the brain is damaged, the brain controls the heart and the rest of the body so if the part of the brain that controlled the heart or the blood stream got damaged, blood could stop flowing a little and there could be blood clots, causing a heart attack, etc.
What do you feel when you place your hand on your chest?
You would feel that you heart is being pressed upon.
What are the two types of controlling systems that regulate heart activity?
Autonomic Nervous System:
1) Parasympathetic system
2) Sympathetic system
How are the structures of the heart organized?
The heart is organized in different sections such as the chambers or the veins. that is also arteries and kinds of things such as superior or inferior Vena Cavas that is the best answer i can come up with
