The secondary bronchi sub-divides into smaller tertiary bronchi, which divide into still smaller bronchioles. The various parts are as follows i External Nares Nostrils These are a pair of slits at the lower end of the nose, which opens into the the nasal chamber through the nasal passage. Glottis is a slit-like aperture that remains open except during swallowing. Instead, there is a tidal volume of air. The alveolar wall is very thin with a rich network of blood capillaries. Strahan, Credit Ratings and the Evolution of the Mortgage- Backed. Human impact on the environment:.
The organisms undergoing the process are called anaerobes, e. We discuss structure and adaptations of the human gaseous exchange systems. It closes the glottis to check the entry of food during swallowing. Once you find your worksheet, click on pop-out icon or print icon to worksheet to print or download. How does the graphic assist the learners to answer the questions that follow? It can occur if the pressure within the lungs intra-pulmonary pressure is less than the atmospheric pressure, i.
Teacher's Guide with Control Test Book and. Finally, we look at relevant terminology. It is about 1100-1200 mL. Breathing mainly involves two steps i. Aerobic Respiration When oxygen is used for respiration, its called aerobic respiration. It starts with the external nostrils upto the terminal bronchioles. Hotpotato We used hotpotatoto upload matching words column and the puzzle for learners to give appropriate terms.
Free e-learning tutorial on aquatic and terrestrial animals: respiratory organs, grade 11 biology: respiration, epithelium, respiratory gas exchange test prep for online microbiology courses distance learning. Anaerobic Respiration It occurs in the absence of molecular oxygen in the cytoplasm also called as fermentation. In this part, gaseous exchange does not take place. Thus, the overall increase in the volume of thoracic cavity causes an increase in pulmonary volume. It is also called dead air space. It contains the pleural fluid secreted by the pleura, for reducing friction on the lung surface. Ten years smoking 25 a day or Rp 391.
Taken from Focus Life Sciences Teachers Guide page xiv. It involves movement of thorax, expansion inflation and deflation of lungs and flow of air into and from the lungs by creating a pressure gradient between the lungs and the atmosphere. The organism undergoing the process are termed as aerobes. The factors that affect rate of diffusion are i Thinness of the membrane. Worksheet will open in a new window.
It is about 2500-3000 mL. The condition is called pneumothorax. This inturn causes the expulsion of the air from the lungs. Video We used video in order to show how cellular respiration and gaseous exchange occurs in our bodies. It damages cells in the lungs. It is about 2500-3000 mL of air.
Google Sites, Wikispaces, Wix, Yola, etc. It allows the air to pass into lungs. Following muscles play an important role a Diaphragm It is lowered by the contraction of its muscle fibres and becomes flat. The different types of respiration are 1. It is about 500 mL. It passes the air to the alveoli.
So, the movement of O 2 is from alveoli to the blood. Voki We used voki for our Life Sciences lesson's introduction and it also used to motivate learners at school. Lungs These are the paired triangular bags that constitute the respiratory organ. It extends up to the mid-thoracic cavity. Protective Coats Pleurae Each lung is enclosed in two membranes called the pleura layers of peritoneum of the thorax.