Identify the parts and functions of human respiratory system. 2. Trace the path of air from the nose to the lungs. Diagram of the Respiratory System. 2. Information’s about the Respiratory System. 3. Manila Paper, Pentel pen References: Department of Education, Culture and Sports. Instructional materials Development center. (1990).
Science and technology II. ( 1st ed).
) ( Secondary Education Development Program Series).
Checking of attendance a. 3 Checking of the room cleanliness Motivation • Pinch your nose for a while, how does it feel? Can you stay longer without air? Why? b. Lesson Proper 1. Post the Diagram on the board. 2. Put the necessary parts and functions on the diagram on the board. c. Discussion d.
The nostrils: Nostrils are involved in air intake, they bring air into the nose, where air is warmed and humidified. The tiny hairs called cilia filters out dust and other particles present in the air and protects the nasal passage and other regions of the respiratory tract. . Trachea: The trachea is also known as windpipe. The trachea filters the air we inhale and branches into the bronchi. f. Bronchi: The bronchi are the two air tubes that branch off of from the trachea and carry atmospheric air directly into the lungs. g. Lungs: The main organ of the respiratory system is lungs. Lungs are the site in body where oxygen is taken into and carbon dioxide is expelled out. The red blood cells present in the blood picks up the oxygen in the lungs and carry and distribute the oxygen to all body cells that need it.
The Essay on Asthma Air Lungs Attacks
... trachea divides into two branches, called the right bronchus and the left bronchus, that connect directly to the lungs. Air continues through the bronchi, ... of the respiratory system in which the passages that enable air to pass into and out of the lungs periodically narrow, ... Allergens produce an exaggerated response of the immune system in which a specific antibody, immunoglobulin E, initiates ...
The red blood cells donate the oxygen to the cells and picks up the carbon dioxide produced by the cells. h. Alveolus: Alveolus is the tiny sac like structure present in the lungs which the gaseous exchange takes place. i. Diaphragm: Breathing begins with a dome-shaped muscle located at the bottom of the lungs which is known as diaphragm. When we breathe in the diaphragm contracts and flatten out and pull downward. Due to this movement the space in the lungs increases and pulls air into the lungs.
When we breathe out, the diaphragm expands and reduces the amount of space for the lungs and forces air out. j. Generalization • The respiratory system functions in the exchange of oxygen and carbon dioxide between organisms and their environment. • The nose, pharynx, larynx trachea, bronchi and lungs are the organs consisting the human respiratory system. k. Valuing Cleanliness of air is needed. l. Assessment Quiz: refer to the diagram, identify and label the parts of the respiratory system.
