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Heart as you know is a four chambered organ.Right side deals with deoxygenated blood and left side oxygenated blood.
Blood supply to the heart is via coronary artery and its branches which usally has its origin from the ostium of aorta.
It is also proven that profusion and flow of coronary arteries is during ventricular diastole i.e when the ventricles relax...
The lung or pulmonary system is the essential respiration organ in air-breathing animals, including most tetrapods, a few fish and a few snails. In mammals and the more complex life forms, the two lungs are located in the chest on either side of the heart. Their principal function is to transport oxygen from the atmosphere into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere. This exchange of gases is accomplished in the mosaic of specialized cells that form millions of tiny, exceptionally thin-walled air sacs called alveoli.
In order to completely explain the anatomy of the lungs, it is necessary to discuss the passage of air through the mouth to the alveoli. Once air progresses through the mouth or nose, it travels through the oropharynx, nasopharynx, the larynx, the trachea, and a progressively subdividing system of bronchi and bronchioles until it finally reaches the alveoli where the gas exchange of carbon dioxide and oxygen takes place.
The drawing and expulsion of air (ventilation) is driven by muscular action; in early tetrapods, air was driven into the lungs by the pharyngeal muscles, whereas in reptiles, birds and mammals a more complicated musculoskeletal system is used.
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Is this true; Hi All, read this:- 1 Let’s say it’s 7.25pm and you’re going home (alone of course) after an unusually hard day on the job. 2 You’re really tired, upset and frustrated. 3 Suddenly you start experiencing severe pain in your chest that starts to drag out into your arm and up in to your jaw. You are only about five km from the hospital nearest your home. 4 Unfortunately you don’t know if you’ll be able to make it that far. 5 You have been trained in CPR, but the guy that taught the course did not tell you how to perform it on yourself. 6 HOW TO SURVIVE A HEART ATTACK WHEN ALONE? Since many people are alone when they suffer a heart attack without help, the person whose heart is beating improperly and who begins to feel faint, has only about 10 seconds left before losing consciousness. 7 However, these victims can help themselves by coughing repeatedly and very vigorously. A deep breath should be taken before each cough, and the cough must be deep and prolonged, as when producing sputum from deep inside the chest. A breath and a cough must be repeated about every two seconds without let-up until help arrives, or until the heart is felt to be beating normally again. 8 Deep breaths get oxygen into the lungs and coughing movements squeeze the heart and keep the blood circulating. The squeezing pressure on the heart also helps it regain normal rhythm. In this way, heart attack victims can get to a hospital. 9 Tell as many other people as possible about this. It could save their lives!! 10 A cardiologist says If everyone who gets this mail kindly sends it to 10 people, you can bet that we’ll save at least one life. 11 Rather than sending jokes, please..contribute by forwarding this mail which can save a person’s life…. 12 If this message comes around you ……more than once…..please don’t get irritated……U need to be happy that you are being reminded of how to tackle….Heart attacks….AGAIN… From: DR.N Sivakadakshm, (Senior Cardiologist)
a family member has a heart condition where his valves don t close, cause lack of oxygen, tiredness, weakness and coughing. he has been told he will need to do a surgery very soon. The blood leakage is a 3 out of 4 and will need to do surgery once diagnosed with a 4. if symptoms occur progressively and are constant, what are the effects? Will this cause a heart failure? Also, he has been just told he has bronchitis with all these symptoms, is this normal?
when the Apex of the Heart is not getting enough blood/oxygen..what is it called? I have a stent in left artery, Been experiencing a lot of multiple systems of Heart Attack lately..Had Angiogram done yesterday, was told of condition regarding Apex of Heart and put on Betta Blocker.
HAD TRIPLE BY-PASS 10/1/2008 ALONG WITH WITH AORTIC VALVE REPLACEMENT AND ASCENDING AORTIC DISSECTION. CLOSE CALL TO SAY THE LEASE. 1/10/2012 DEVELOPED A.M. ARRHYTHMIA EVERY DAY. AM I IN SEVERE DANGER OF DYING OR IS MY SCENARIO LIVABLE.
I have been told I have an ascending thoratic aortic aneurysm measuring 4.5cm. this seems to have developed in the last 2 years. . I have had my aortic valve replaced 13 years ago with a bovine one. At what stage do you think it needs to be repaired? 5cm. . this seems to have appeared in the last 2 years. I also have had aortic valve replaced with bovine valve I have been told I have and ascending thoratic aorta aneurysum measuring 4.13 years ago. at what stage do you thinit needs to be repaired? rta aneuysm
my 27 year old daughter has had aortic stenosis for the past 27yrs.At 3 mos old had coarctation corrected.Last December was told her aortic root is 4.3 cm.Two weeks ago has a f/up ekg and echo.Aortic root is still 4.3 cm.However,my daughter had some drinks at a celebration saturday night,passed out and stayed asleep.She was vomiting all day Sunday.Monday morning 911 was called.Her heart rate was over 200,was brought down with medication vs electricity then escalated again to 200.She was stabilzed at the er then released after being hydrated.However it is 2 days later she still seems weak , had had the dry heaves yesterday.She has difficulty swallowing,is burping continually and has a cardiac appt set up in 2 weeks.I am her mother and feel she should have a ct.
Hi, may I answer your health queries right now ? Please type your query here...I had a cardiac cath today. I have a bicuspid aorta, with moderate stenosis- so no replacement valve for a few more years. 14 hours later (middle of the night) my rt. big toe really hurts. Should I do something about this?
A cat scan for the lungs revealed atherosclerosis of the great vessels , aorta and coronary arteries. Aorta and pulmonary arteries are normal in caliber. Heart and and pericardium are within normal limits. There are no significant mediastinal or...
Hi Dr. XXXXXXX I've got a question for you regarding a bright area on an MRI . I'm curious if this is a blood vessel or an artifact. One radiologist said it was an artifact (a pulsation artifact) but I'm curious as to your opinion. You can also...
My wife's scan of her heart shows a dilated aorta the right side is normal at 2CM but the left is distended to 4.3CM Currently the earliest we can get an appointment is XXXXXXX 10th. We have been told not to sit on this by our primary. Is this a...