Respiratory System PDF

BREATHING IN ACTION! BREATHING IN ACTION Take a deep breath and observe what happens to your chest and stomach. Exhale slowly, noticing how your body changes as you breathe out.  Y SYSTEMS THE BOD THE HUMAN RESPIRATORY SYSTEM  SON OBJECTIVES...

BREATHING IN ACTION! BREATHING IN ACTION Take a deep breath and observe what happens to your chest and stomach. Exhale slowly, noticing how your body changes as you breathe out.  Y SYSTEMS THE BOD THE HUMAN RESPIRATORY SYSTEM  SON OBJECTIVES LES Identify the major parts Describe in simple terms Create a simple model of the of the respiratory how the respiratory respiratory system using system (e.g., nose, systems work available materials (e.g., balloons, trachea, lungs, straws, plastic bottles) to diaphragm) and its simulate lung expansion and functions. contraction.  LET’S DISCUSS RESPIRATORY SYSTEM The human respiratory system allows one to obtain oxygen, eliminate carbon dioxide.  LET’S DISCUSS Breathing consists of two phases, inspiration and expiration Inspiration- the process of taking in air Expiration- the process of blowing out air  OXYGEN TRAVEL This flowchart simplifies a complex process that captures the essential steps involved in oxygen transport and gas exchange within the respiratory system. Air enters through the nose or The bronchi divide into smaller mouth. It passes through the bronchioles. These pharynx and larynx. The trachea bronchioles lead to clusters of carries air down into the bronchi. alveoli in the lungs. The diaphragm relaxes, pushing In the alveoli, oxygen diffuses air out of the lungs. Air exits into the bloodstream. Carbon through the trachea, larynx, dioxide diffuses out of the and either the nose or mouth. bloodstream into the alveoli.  RY ORGANS RESPIRATO NOSE AND NASAL CAVITY The nose serves as the primary entry point for air.  RY ORGANS RESPIRATO NOSE AND NASAL CAVITY Inside the nose, we find the nasal cavity, which filters incoming air, removing dust and particles.  RY ORGANS RESPIRATO NOSE AND NASAL CAVITY Warms, moistens, & filters air as it is inhaled  RY ORGANS RESPIRATO MOUTH AND ORAL CAVITY The mouth can also serve as an alternate entry point for air.  RY ORGANS RESPIRATO MOUTH AND ORAL CAVITY The oral cavity plays a minor role in respiration but is essential for speech and swallowing  RY ORGANS RESPIRATO MOUTH AND ORAL CAVITY If the nasal passages are blocked, breathing through the mouth becomes essential.  Y ORGANS RESPIRATOR PHARYNX (THROAT) The pharynx connects the nasal cavity and mouth to the trachea. It serves as a common pathway for both air and food.  Y ORGANS RESPIRATOR PHARYNX (THROAT) The epiglottis, a flap-like structure in the pharynx, prevents food from entering the trachea during swallowing.  RY ORGANS RESPIRATO LARYNX (VOICE BOX) The larynx is a tough, flexible segment of the respiratory tract that connects the pharynx (the back of the nose and throat) to the trachea (windpipe).  RY ORGANS RESPIRATO LARYNX (VOICE BOX) It allows air to pass through it while preventing food and drink from blocking the airway.  WELCOME TO SCIENCE CLASS  RY ORGANS RESPIRATO TRACHEA (WINDPIPE) The trachea is a wide, hollow tube that connects the larynx to the bronchi (airways) of the lungs. Its primary function is to enable airflow to and from the lungs.  RY ORGANS RESPIRATO BRONCHI The bronchi are the main airways into the lungs. When you breathe, air enters your body through your mouth or nose and passes through the larynx and trachea. The trachea branches into a bronchus in each lung.  RY ORGANS RESPIRATO BRONCHIOLES Bronchioles are small, branching air passages inside the lungs. They serve as channel for air, connecting the larger bronchi to the alveoli.  RY ORGANS RESPIRATO BRONCHIOLES Alveoli are where gas exchange occurs: oxygen enters the bloodstream, and carbon dioxide is removed during exhalation. Bronchioles deliver air to a diffuse network of approximately 300 million alveoli.  Y ORGANS RESPIRATOR ALVIOLI Alveoli are tiny, air sacs located at the end of the bronchioles. These structures play a crucial role in gas exchange during breathing.