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Circulatory System
Circulatory System is the category for questions about the human circulatory system, including questions about the human heart, arteries, and veins.
2,116 Questions
What is the molecule formed when hemoglobin binds to oxygen molecules?
It forms a compound called oxyhemoglobin. And when it combines with carbon dioxide it makes carboxyhemoglobin.
What is the biological term of oxygen carrying pigment found in red blood corpuscles?
heomoglobin..... a comlex compound of proteins with iron......
What are ten reasons why people smoke?
Okay, I am not a smoker, so I have no idea why people smoke. It's unhealthy, can make you die, can make you spend all your money on cigarettes, and makes you smell really bad. It's made of tar, which is what they use to make roads and driveways. The easiest way to stop is to not start.
Does a Coelacanth have a Buoyancy System?
Yes it does have a buoyancy system.
The coelacanth (Latimeria spp.) is completely oil-filled (it has no air sinuses at all) and the swim bladder is filled with a fatty lipid. The oil is slightly positively buoyant and this counteracts the weight of the fish. These two factors enable the fish to rise and descend through a considerable depth range without suffering any adverse effects.
How many Major valves in the human body?
The human body has four major valves in the heart: the mitral valve, tricuspid valve, aortic valve, and pulmonary valve. These valves regulate blood flow through the heart's chambers and into the major arteries. Additionally, the body has numerous other smaller valves, particularly in the veins, but the four heart valves are the primary ones referred to in this context.
How does the raas system work?
The RAAS system involves several organs. When there is a loss of blood or loss of fluid and blood pressure falls, the liver produces angiotensinogen. The kidney produces renin which acts as an enzyme to change angiotensinogen into angiotensin I.
The kidneys along with the lungs produce a enzyme called ACE which changes angiotensin I into angiotensin II.
Angiotensin II is a vasoconstrictor which acts on the vascular system to increase blood pressure. It also acts on the pituitary gland. The pituitary gland produces ADH. ADH means antidiuretic hormone. It causes the kidneys to "hold onto" water. The kidney produces aldosterone as a result, causing the body to conserve sodium.
To learn this material is very helpful to produce a diagram.
How are the circulatory and nervous systems related?
As it turns out, it is difficult to give a simple answer to this as both are extremely complicated. However, one way to think of it is that you can't have one without the other, and expect to survive. The nervous system of course needs nutrients to be brought to it and waste molecules to be taken away, this is accomplished by the circulatory system. Interestingly enough, the circulatory system is heavily innervated by the nervous system. Signals from various parts of the nervous system do things like change the heart rate, either faster or slower, change the constriction or dilation of the blood vessels, which alters the rate of flow for the circulatory system, and uses the circulatory system to dissipate heat if the body and the brain senses that it is too warm.
The circulatory system carries O2 & nutrients to most parts of the body & removes waste products. The center of this system is the heart. The heart rate is controlled by signals from the nervous system (if you want more specificity, Wikipedia will oblige). If the flight or fight response is in effect, or under athletic duress, the heart is recieving signals to pump quickly; under conditions of rest, the heart rate is modulated to a lower, energy conserving, resting state. (Ditto for the rate of respiration)
A fenestrated dressing has a "window" in it, an opening that lets it fit around a tube.
What are the functions of valves in the circulatory system and where are they found?
There are 4 valves in your heart (2 atrioventricular and 2 semilunar). There is an AV valve between the right atrium and the right ventricle (Right AV valve or tricuspid valve) and an AV valve between the left atrium and the left ventricle (Left AV valve or bicuspid valve). There are also two semilunar valves; one between the right ventricle and the lungs (pulmonary semilunar valve) and one between the left ventricle and the aorta (aortic semilunar valve).
The main purpose of the valves is to prevent backflow of blood in the heart. There are things called the chordae tendinae and papillary muscle that help control the opening and closing of the valves as blood flows through them.
There are also valves in the veins. These keep the blood from flowing backwards as the blood pressure is very low.
What is a remon system hacktool rootkit?
1. Download and run firefox to protect your computer from future spyware attacks and pop ups which are coming in through internet explorer (Trojan downloaders, win32 ).Browser attacks aren't easy to spot because they piggyback on legitimate traffic that doesn't exhibit many obvious warning signs . 2. Run the vundo and combo fix 3. Run Malwarebytes Anti-Malware
4. Run the anti spyware remove programs spybot
5. Run a complete scan with free curing utility Dr.Web CureIt!
What happens when one hands feels cold and the other is not?
When a person's hand is cold and the other is hot, this could mean many things. It might mean there is poor circulation through the cold one, or that they were laying on the one that is warm.
It moves around within the Paramecium cell, distributing food, nutrients, and other needed materials to different parts of the cell.
During atrial systole 70 percent of ventricular filling occurs?
No. Most (~70%) of ventricular filling occurs passively, without atrial contraction.
