Pulmonary valve

Pulmonary valve

Infobox Anatomy
Name = PAGENAME
Latin = valva trunci pulmonalis
GraySubject = 138
GrayPage = 532


Caption = Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow.


Caption2 = Heart seen from above.
Width = 300 | System =
MeshName = Pulmonary+Valve
MeshNumber = A07.541.510.738
The pulmonary valve, is the semilunar valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. Similar to the aortic valve, the pulmonic valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ventricular systole, when the pressure in the right ventricle falls rapidly, the pressure in the pulmonary artery will close the pulmonic valve.

The closure of the pulmonic valve contributes the P2 component of the second heart sound (S2). The right heart is a low-pressure system, so the P2 component of the second heart sound is usually softer than the A2 component of the second heart sound. However, it is physiologically normal in some young people to hear both components separated during inhalation.


=Additional

ee also

* Heart valve

External links

*


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • pulmonary valve — noun a semilunar valve between the right ventricle and the pulmonary artery; prevents blood from flowing from the artery back into the heart • Hypernyms: ↑semilunar valve * * * noun : a valve consisting of three crescentic cusps separating the… …   Useful english dictionary

  • Pulmonary valve — One of the four valves in the heart, the pulmonary valve stands at the opening from the right ventricle in the pulmonary artery trunk. It lets blood head in the right direction (toward the lungs) and keeps it from sloshing back from the pulmonary …   Medical dictionary

  • Pulmonary valve stenosis — Infobox Disease Name = PAGENAME Caption = Pulmonary valve stenosis Width = 250px DiseasesDB = 11025 ICD10 = ICD10|I|37|0|i|30, ICD10|I|37|2|i|30, ICD10|Q|22|1|q|20 ICD9 = ICD9|424.3, ICD9|746.02 ICDO = OMIM = 265500 MedlinePlus = 001096… …   Wikipedia

  • Pulmonary valve insufficiency — Infobox Disease Name = PAGENAME Caption = DiseasesDB = 11014 ICD10 = ICD10|I|37|1|i|30, ICD10|Q|22|2|q|20 ICD9 = ICD9|424.3, ICD9|746.09 ICDO = OMIM = MedlinePlus = eMedicineSubj = med eMedicineTopic = 1964 MeshID = D011665 Pulmonary valve… …   Wikipedia

  • pulmonary valve insufficiency — defective functioning of the pulmonary valve, with incomplete closure resulting in pulmonic regurgitation …   Medical dictionary

  • pulmonary valve — a valve in the heart lying between the right ventricle and the pulmonary artery. It is a semilunar valve that prevents blood returning to the ventricle from the pulmonary artery …   The new mediacal dictionary

  • pulmonary valve — /pʌlmənri ˈvælv/ (say pulmuhnree valv) noun the valve in the heart which lies between the right ventricle and the pulmonary artery. Also, pulmonic valve …  

  • pulmonary valve — Anat. a semilunar valve between the pulmonary artery and the right ventricle of the heart that prevents the blood from flowing back into the right ventricle. * * * …   Universalium

  • Valve of coronary sinus — Valve of the coronary sinus Interior of right side of heart. (Valve of the coronary sinus labeled at bottom left.) Latin valvula sinus coronarii Gray s …   Wikipedia

  • Valve replacement — surgery is the replacement of one or more of the heart valves with either an artificial heart valve or a bioprosthesis (homograft from human tissue or xenograft e.g. from pig).There are four procedures: * Aortic valve replacement * Mitral valve… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”