Warning: Table './islamics_hiahnew/sessions' is marked as crashed and last (automatic?) repair failed query: SELECT u.*, s.* FROM users u INNER JOIN sessions s ON u.uid = s.uid WHERE s.sid = 'kbs8jek1ln33mrd4r6mhsmgnf1' in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/cache_page' is marked as crashed and last (automatic?) repair failed query: SELECT data, created, headers, expire, serialized FROM cache_page WHERE cid = 'https://www.islamicsham.org/nashrah/2882' in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:242:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:navigation:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:261:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:navigation:tree-data:e43d1ad68987fb1f78e49a63c39b7caf'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:244764:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:106:{i:1;a:2:{s:4:\\"link\\";a:37:{s:14:\\"load_functions\\";s:0:\\"\\";s:16:\\"to_arg_functions\\";s:0:\\"\\";s:15:\\"access_callback\\";s:1:\\"1\\";s:16:\\"access_arguments\\";s:6:\\"a:0:{}\\";s:13:\\"page_callback\\";s:17:\\& in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:351:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:navigation:tree-data:e43d1ad68987fb1f78e49a63c39b7caf', created = 1777312088, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:navigation:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', ' in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:245:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:264:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:385:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:0:{}s:10:\\"node_links\\";a:0:{}}', created = 1777312088, expire = 0, headers = '', serialized = 1 WHERE cid = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.is in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:357:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:primary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe', created = 1777312088, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:primary-links:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:247:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:secondary-links:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:266:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:26;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', '', '216.73.216.196', 1777312088) in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:387:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'a:2:{s:4:\\"tree\\";a:0:{}s:10:\\"node_links\\";a:0:{}}', created = 1777312088, expire = 0, headers = '', serialized = 1 WHERE cid = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www. in /home/islamics/public_html/includes/database.mysql.inc on line 136

Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:361:\"Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE cache_menu SET data = 'links:secondary-links:tree-data:5d6d3aaaaef5fba302ce62698fa37bbe', created = 1777312088, expire = 0, headers = '', serialized = 0 WHERE cid = 'links:secondary-links:page-cid:nashrah/2882:1'\";s:5:\"%file\";s:45:\"/home/islamics/public_html/includes/cache.inc\";s:5:\"%line\";i:109;}', 3, '', 'https://www.islamicsham.org/nashrah/2882', ' in /home/islamics/public_html/includes/database.mysql.inc on line 136
جسمي المدهش : الدم | هيئة الشام الإسلامية
الاثنين 10 ذو القعدة 1447 هـ الموافق 27 أبريل 2026 م
الصفحة الرئيسية » مجلة نور الشام
جسمي المدهش : الدم
الأحد 11 جمادى الآخر 1437 هـ الموافق 20 مارس 2016 م
عدد الزيارات :

 

جسمي المدهش : الدم
الدّم هو نسيجٌ ضروري لكثيرٍ من المخلوقاتِ الحيّة مثل الإنسان و الحيوان .
له وظيفةٌ مهمّةٌ ،و هي نقل الغذاء و الأكسجين إلى جميع خلايا الجسم ، و كذلك تحمل ثاني أكسيد الكربون من الخلايا إلى الرئتين . درجة حرارته الطبيعية هي 37 درجة مئوية .
يشكّل الدّم 8% من وزن جسمك . فإذا كان وزن الشخص مثلًا 45 كغم فإن وزن الدم 3.6 كغم . كم وزن الدّم في جسمك أنت ؟
ممّ يتكوّن الدّم ؟
بلازما الدّم
هي مادة سائِلةٌ شفّافةٌ تميل إلى الاصفرار ولها دورٌ مهمٌ في انتقال الماءِ والأملاح وأيضاً المواد الغذائية مثل السّكّريّات والفيتامينات .
54% من الدم هو بلازما ، أي أكثر من نص تركيب الدم. وتتركب من 90% ماء ، لذا علينا الإكثار من شرب الماء لتنشيط الدورة الدموية.
خلايا الدّم الحمراء
شكلها يشبه الأقراص و سطحها مقعر من الطرفين .وظيفتها نقل الغازات . وتمتاز بغشاء مرن يُسهل مرورها حتى في أضيق الشّعيراتِ الدّمويّة. تتكون خلايا الدّم الحمراء في النّخاع الأحمر في العظام الكبيرة وتتجدد كل 120 يوم .
لونها أحمر لوجود مادة الهيموجلوبين التي تتكون من بروتين وحديد، عددها تقريبا لدى الإنسان 4 - 5 مليون .
الخلايا البيضاء:
كريّات الدم البيضاء هي الجنود الصغيرة في جسمك، تقوم بتوفير الحماية للجسم من الأمراض ،وعددها أقل من خلايا الدّم الحمراء . لكنَّ حجمها أكبر !
متفاوتة الأحجام والأشكال.
تستطيع هذه الخلايا أن تنقسم ليكثر عددها . فعندما تصاب بالمرض ، تتكاثر هذه الخلايا لتزيد من دفاعها عن الجسم و محاربة المرض .
الصفائح الدموية:
عندما تصاب بجرحٍ ، يأتي عمل هذه الصفائح كيف ذلك ؟
عند ملامستها للهواء تتكسر لتجلط الدم حتى لا يتسبب النّزيف بضررٍ . و تقوم بذلك  عن طريق تحويل مادة روتينيّة سّائلة الموجودة في الدم إلى مادةٍ صلبةٍ وهي خيوطٌ متصلّبةٌ تتجمع حول السّطح الجلد لتمنع خروج الدّم من الجلد .
توجد في الشّخص الطبيعى بنسبة ربع مليون لكل مم . تتكسر من الكبد والطحال كل 10ايام لتتجدد باستمرار .


Warning: Table './islamics_hiahnew/watchdog' is marked as crashed and last (automatic?) repair failed query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (0, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:3887:\"Table './islamics_hiahnew/sessions' is marked as crashed and last (automatic?) repair failed\nquery: UPDATE sessions SET uid = 0, cache = 0, hostname = '216.73.216.196', session = 'messages|a:1:{s:5:\\"error\\";a:8:{i:0;s:320:\\"user warning: Table './islamics_hiahnew/cache_menu' is marked as crashed and last (automatic?) repair failed\\nquery: SELECT data, created, headers, expire, serialized FROM cache_menu WHERE cid = 'links:primary-links:page-cid:nashrah/2882:1' in /home/islami in /home/islamics/public_html/includes/database.mysql.inc on line 136