{"id":3427,"date":"2022-10-24T03:32:50","date_gmt":"2022-10-23T20:32:50","guid":{"rendered":"http:\/\/www.tneutron.net\/blogs\/denyut-nadi\/"},"modified":"2022-10-13T09:07:42","modified_gmt":"2022-10-13T02:07:42","slug":"denyut-nadi","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/blogs\/denyut-nadi\/","title":{"rendered":"Denyut Nadi"},"content":{"rendered":"
\n

Jantung sebagai pompa darah selalu berkontraksi secara terus-menerus (kontinyu) dan ritmis. Manifestasi kontraksi jantung tersebut dapat dirasakan pada hampir seluruh pembuluh arteri berupa denyut nadi (pulsus). Pulsus dapat dirasakan melalui pembuluh darah superfisial seperti: arteri radialis.<\/p>\n

Tekanan darah<\/strong>
\nTekanan darah merujuk kepada tekanan yang dialami darah pada pembuluh arteri ketika darah di pompa oleh jantung ke seluruh tubuh manusia. Tekanan darah dibuat dengan mengambil dua ukuran dan biasanya diukur seperti berikut – 120 \/80 mmHg. Angka di atas (120) menunjukkan tekanan pembuluh arteri akibat jantung berdenyut disebut tekanan sistole. Angka bawah (80) menunjukkan tekanan saat jantung mengendur di antara pemompaan, dan disebut tekanan diastole.<\/p>\n

Saat yang paling baik untuk mengukur tekanan darah adalah saat Anda istirahat dan dalam keadaan duduk atau berbaring. Tekanan darah dalam kehidupan seseorang bervariasi secara alami. Bayi dan anak-anak secara normal memiliki tekanan darah yang jauh lebih rendah daripada dewasa. Tekanan darah juga dipengaruhi oleh aktivitas fisik, dimana akan lebih tinggi pada saat melakukan aktivitas dan lebih rendah ketika beristirahat. Tekanan darah dalam satu hari juga berbeda; paling tinggi di waktu pagi hari dan paling rendah pada saat tidur malam hari.<\/p>\n

Bila tekanan darah diketahui lebih tinggi dari biasanya secara berkelanjutan, orang itu dikatakan mengalami masalah darah tinggi. Penderita darah tinggi mesti sekurang-kurangnya mempunyai tiga bacaan tekanan darah yang melebihi 140\/90 mmHg saat istirahat.<\/p>\n

Pembuluh darah<\/strong>
\nPembuluh darah dapat dikategorikan berdasarkan ukurannya sebagai berikut:
\n1. Aorta tersusun atas: lapisan endothel, otot polos, dan jaringan ikat.<\/p>\n<\/div>\n

\u00a0<\/span>\"clip_image001\"<\/a><\/span>\u00a0<\/span><\/span><\/div>\n
\n

2. Pembuluh nadi besar (arteri) berfungsi mengangkut oksigen melalui darah dari jantung ke seluruh jaringan tubuh, akan semakin mengecil ketika darah melewati pembuluh menuju organ lainnya.<\/p>\n

3. Pembuluh nadi kecil (Arteriola), tersusun atas: lapisan endothel, dan otot polos. Arteriola sebagai pembuluh darah resistan berfungsi mengatur aliran darah dari arteri ke kapiler.<\/p>\n

4. Kapiler tersusun atas: lapisan endothel. Pertukaran zat-zat yang terlarut dalam cairan darah ke jaringan tubuh dan sebaliknya terjadi melalui kapiler. Pembuluh kapiler : bentuknya kecil dan tipis, menghubungkan pembuluh arteri dan pembuluh vena. Lapisan dindingnya yang tipis memudahkan untuk dilewati oleh oksigen, nutrisi, karbon dioksida serta bahan sisa lainnya dari dan ke organ sel lainnya.<\/p>\n

5. Venula, vena tersusun atas endothel dengan sel pipih selapis, sub-endothelium tersusun atas jaringan ikat tipis langsung berhubungan dengan tunica adventitia. Pembuluh vena : fungsinya menyalurkan aliran darah yang berisi bahan sisa kembali ke jantung jantung untuk dipecahkan dan dikeluarkan dari tubuh. Pembuluh vena semakin membesar ketika mendekati jantung.<\/p>\n

Bagian atas vena (superior) membawa darah dari tangan dan kepala menuju jantung, sedangkan bagian bawah vena (inferior) membawa darah dari bagian perut dan kaki menuju jantung.Tunica media tidak ada. Tunicaadventitia tersusun atas jaringan ikat longgar dengan serabut colagen yang membentuk berkas-berkas longitudinal, sel fibroblast tampak diantaranya. sel-sel otot polos tampak pula.<\/p>\n<\/div>\n

\u00a0<\/span><\/span>\"clip_image002\"\u00a0<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Jantung sebagai pompa darah selalu berkontraksi secara terus-menerus (kontinyu) dan ritmis. Manifestasi kontraksi jantung tersebut dapat dirasakan pada hampir seluruh<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[21],"tags":[3368,3378,3376,3374,3373,3371,3372,3369,3370,3375,3377],"class_list":["post-3427","post","type-post","status-publish","format-standard","hentry","category-jantung-dan-pembuluh-darah","tag-denyut-nadi","tag-denyut-nadi-120-per-menit","tag-denyut-nadi-adalah","tag-denyut-nadi-cepat","tag-denyut-nadi-di-perut","tag-denyut-nadi-ibu-hamil","tag-denyut-nadi-maksimal","tag-denyut-nadi-normal","tag-denyut-nadi-normal-anak","tag-denyut-nadi-normal-menurut-who","tag-denyut-nadi-normal-pdf"],"yoast_head":"\nDenyut Nadi - TN Blogs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.tneutron.net\/blogs\/denyut-nadi\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Denyut Nadi - TN Blogs\" \/>\n<meta name=\"twitter:description\" content=\"Jantung sebagai pompa darah selalu berkontraksi secara terus-menerus (kontinyu) dan ritmis. 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