8th Grade Respiration 1 Lesson

 RESPIRATION

Learning outcomes:

Content:

1.  to be able to explain lungs structure, gas exchange in the lungs and body tissues, regulation of respiration;

2.  to be informed about consequences of bad health behaviour;

3.  to be able to help person who suffers from CO poisoning.

Language:

to be able to discuss your intensions to given topic.

Exercise 1. Step one (individual work). Fill the table with know, want, learned columns. Keep track of these in future lessons on this topic.

KNOW	WANT	LEARNED

Step two (team work). Explain your neighbours what you know and want to learn about your respiration.

Exercise 2 (individual work). Watch the video and answer the questions (https://goo.gl/G4BFL5):

1.      What is the structure of respiratory system?

2.      What are the functions of nasal cavity?

3.      What is the function of trachea?

Step 2 (pair work). Discuss the answers with your face partner.

Exercise 3. Step one (individual work). Fill in the blanks by using given words and phrases:

throat           carbon dioxide                diffusion                 humidify                conducting zone              gas exchange               responsible                      major                               respiratory zone              out of the lungs

The breathing system is (A)_______ for getting oxygen and getting rid of (B)______, and helping in speech production and in sensing smells. From a functional perspective, the respiratory system can be divided into two (C)______ areas: the conducting zone and the (D)______. The conducting zone consists of all of the structures that provide passageways for air to travel into and (E)_______: the nasal cavity, throat, trachea, bronchi, and most bronchioles. The nasal cavity helps to warm and (F)_____ incoming air, while removing dirts and pathogens. Then air travels through other structures of the (G)______ to the lungs.

The respiratory zone includes the structures of the lungs that are directly involved in (H)______: the bronchioles and alveoli. The lining of the conducting zone is composed mostly of pseudostratified hair-lined columnar epithelium. The mucus traps pathogens and dirts, whereas beating cilia move the mucus upwards to the (I)______, where it is swallowed. As the bronchioles become smaller and smaller, and nearer to the alveoli, the epithelium thins. The endothelium of the surrounding capillaries, together with the alveolar epithelium, forms the respiratory membrane. This is a blood-air barrier through which gas exchange happens by simple (J)______.

Step two (pair work): Compare your results with the correct answers shown by your teacher and discuss them with your partner.

7th Lesson Insects

 LINK for the lesson

BLOOD 4. On the dark side

Hey everyone. Here is th last lesson on Blood. Enjoy!

1. Check if you understand the key words.

Immunity

innate

adaptive

leukocyte

cell

cytokines

vast

to be exposed

to originate

screening

invader

2.  What do you think are differences between innate and adaptive immune responses? Write your answer, use the picture above.

3.  Read the first two sentences. What is the difference between them? Try to guess what the text is about.

The immune system is the complex collection of cells and organs that destroys or neutralises pathogens that would otherwise cause disease or death. The immune system is a collection of barriers, cells, and soluble proteins that work together and communicate with each other in amazingly complex ways.

4.  Draw the schema of human immune system after reading the text.

The modern model of immune function is organised into three phases based on the timing of their effects and consists of the following:

• Barrier defences such as the skin and mucous membranes, which act immediately to prevent pathogenic invasion into the body tissues

• The fast but nonspecific innate immune response, which consists of a variety of specialised cells and soluble factors

• The slower but more specific and effective adaptive immune response, which involves many cell types and soluble factors, but is primarily controlled by white blood cells (leukocytes) known as lymphocytes, which help control immune responses.

The immune cells can be divided into three based on function:

• Phagocytic cells, which ingest pathogens to destroy them

• Lymphocytes, which specifically coordinate the activities of adaptive immunity

• Cells containing cytoplasmic granules, which help mediate immune responses against parasites and intracellular pathogens such as viruses.

Some lymphocytes function primarily by producing antibodies. An antibody is any of the group of proteins that binds specifically to pathogen-associated molecules known as antigens. An antigen is a chemical structure on the surface of a pathogen that binds to lymphocyte antigen receptors.

5.  Do the TEST.

Photosynthesis-Cellular Respiration Last Quiz

Hey everyone! Today YOU are going to watch the video about getting energy in different cell types and what exactly happens during that reaction. Do the test after watching the video.

And now enjoy the quiz! LINK LINK LINK