Dictionary » T » Three-chambered heart

Three-chambered heart

Three-chambered heart

congenital abnormality in which there may be a single atrium with two ventricles or a single ventricle with two atria. Rudimentary parts of the atrial and ventricular septa may be present but are incompetent to prevent a virtual single chamber in either case.

amphibians and most reptiles have a heart with three chambers—two atria and a single ventricle. These animals also have separate circuits of blood vessels for oxygenating blood and delivering it to the body. Deoxygenated blood returning from the body empties into the right atrium. From there, blood is conducted to the ventricle and is then pumped to the lungs. After picking up oxygen and getting rid of carbon dioxide in the lungs, blood returns to the heart and empties into the left atrium. The blood then enters the ventricle a second time and is pumped out to the body. The second trip through the heart keeps blood pressure strong and blood flow rapid as blood is pumped to the tissues, helping the blood deliver oxygen more efficiently.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Rice Bran

Rice bran oil can be extracted from the rice bran. Which is a healthy cooking oil good for heart.

See entire post
by josem
Sat Aug 30, 2014 7:35 pm
 
Forum: Molecular Biology
Topic: Rice Bran
Replies: 4
Views: 496

Re: heart failure

Hi Zak im not sure if this is for some sort of class project or if its symptoms you are actually suffering. Hopefully not the latter. The signs of heart disease are not obvious all the time and sometimes a heart attack is the first indicator. There is also no single cause of heart disease but there ...

See entire post
by Narkata3
Sat Jun 21, 2014 6:35 am
 
Forum: Human Biology
Topic: heart failure
Replies: 2
Views: 2121

Hyperadrenergic POTS

... me explain. I have Hyperadrenergic POTS, so feel free to ask any questions. POTS (Postural Orthostatic Tachycardia Syndrome) is when a person’s heart rate speeds up 30 beats per minute or more without much change in blood pressure on standing, people may have orthostatic intolerance (OI). Because ...

See entire post
by rmorrison
Wed Mar 19, 2014 5:38 pm
 
Forum: Human Biology
Topic: Hyperadrenergic POTS
Replies: 0
Views: 2955

licorice root a stress reliever?

... e.g. guilt over highly unlikely consequences of my actions, or anxiety over imagined or exaggerated negative appraisals. It also effects my heart rate and libido, but that's off-topic. I don't know where the stress-reducing idea came from. Licorice root increases cortisol levels by inhibiting ...

See entire post
by wildfunguy
Wed Mar 12, 2014 11:09 pm
 
Forum: Human Biology
Topic: licorice root a stress reliever?
Replies: 0
Views: 1705

Re:

... milliseconds - anger, lust, fear, pleasure, entertainment and excitement are some examples. These emotions are associated with fast breathing and heart-rate, fast visual and verbal processing. These emotions don"t require gaps between thinking to evoke, intensify and sustain. These are the ...

See entire post
by sushil_yadav
Sat Mar 08, 2014 4:20 am
 
Forum: Ecology
Topic: Industrial Society Destroys Mind and Environment
Replies: 45
Views: 47777
View all matching forum results

This page was last modified 11:42, 30 September 2006. This page has been accessed 35,793 times. 
What links here | Related changes | Permanent link