The Respiratory System (الدرس الخامس: الجهاز التنفسي) — العلوم الصف الرابع الابتدائي لغات

الدرس ده من وحدة «Unit 1: Living Systems (الوحدة الأولى: الأنظمة الحية)» فى مادة العلوم لـالصف الرابع الابتدائي لغات على منصة دروسات.

الدرس متاح بالاشتراك: ترم كامل أو المادة لوحدها.

ملخص الدرس

This lesson explains the human respiratory system and how it provides oxygen to the body and removes carbon dioxide. It explains the role of the diaphragm in breathing, how air moves through the trachea and lungs, and how oxygen reaches body cells through the blood.

هتتعلم إيه فى الدرس ده

• Respiration is the process of taking in oxygen and releasing carbon dioxide
• Carbon dioxide is a harmful gas that must be removed from the body
• The diaphragm is the muscle responsible for inhalation and exhalation
• During inhalation, the diaphragm contracts and moves down to expand the lungs
• During exhalation, the diaphragm relaxes and moves up to push air out of the lungs