Text D. The Heart SoundsWhen we lis

Text D. The Heart Sounds
When we listen to the heart we can hear two sounds. The third sound is also heard in some young persons before the age of 30.
The first heart sound is the longest one. It is heard at the moment of contraction of the ventricles when the atrio-ventricular valves close.
The second sound lasts for a shorter period of time. It is heard at the moment when the pulmonary and aortic semi lunar valves close.
The third heart sound is heard when the blood is passing from the atria into the ventricles.
The first and the second cardiac sounds are heard over all the portions of the heart and often over the large vessels. The first heart sound is greater over the surface of the ventricles and it is the greatest over the surface of the mitral and tricuspid valves. The second heart sound is heard loudest over the aorta and the pulmonary artery.
Heart sounds are also heard over some portions of the chest. Normally the first heart sound is heard best over the apex of the heart in the fifth costal interspace. The second sound is heard best over the pulmonary artery and the aorta, that is in the second left and right costal interspaces. The aortic sound is normally louder than the pulmonic sound.
The heart sounds are very important in the clinical diagnosis and the doctors determine many cardiac diseases by heart sounds.

Результаты (узбекский) 1:

Matn D. The Heart Tovushlar
biz ikki tovushni eshitish mumkin yurakka quloq qachon. Uchinchi ovoz ham 30 yoshdan oldin ba'zi yosh odam eshitiladi
birinchi yurak ovoz uzun biri hisoblanadi. Qachon Atrio-qorincha klapanlari yaqin. Bu qorinchasiga siqilish paytdan eshitiladi
ikkinchi ovoz vaqt qisqa muddatga davom etadi. Bu paytda o'pka va aorta yarim oy klapanlari yaqin vaqtda eshitiladi.
Qon qorincha. Ichiga atriyumların dan o'tib ketadi qachon uchinchi yurak tovush eshitiladi
birinchi va ikkinchi yurak tovushlar yurak barcha boblarini ustida eshitiladi va ko'pincha katta tomirlar orqali. Birinchi yurak ovoz qorincha yuzasiga katta va u Mitral va triküspit klapanlari yuzasiga buyugidir. Ikkinchi yurak ovoz aorta va o'pka arteriyasi orqali Kuchli eshitiladi.
Yurak tovushlari ham ko'kragiga ba'zi boblarini ustida eshitiladi. Odatda birinchi yurak ovoz beshinchi jinsi qidiruv qalbning tepalik ustida eng yaxshi eshitiladi. Ikkinchi ovoz ikkinchi chap va o'ng jinsi oraliqlar bo'lgan, o'pka arteriyasi va aorta ustida eng yaxshi eshitiladi. Aorta ovoz pulmonik ovozi ortiq odatda balandroq bo'ladi.
Yurak tovushlar klinik tashxis juda muhim bo'lgan va yurak tovushlar tomonidan shifokorlar ko'p yurak kasalliklari aniqlash.