"The processing of air by the respiratory tract" Human Respiration PPT Courseware 5

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"The processing of air by the respiratory tract" Human Respiration PPT Courseware 5

Why do newborn babies always come into the world crying?

What is breathing?

The process of obtaining oxygen from the air, expelling the carbon dioxide produced in the body, and exchanging gases with the external environment is carried out every moment.

Human breathing is completed by the respiratory system

How would you feel if you pinched your nose and shut up?

Holding my breath, unable to breathe.

The human body is undergoing gas exchange all the time. Obtain oxygen from the air and expel oxygen produced in the body

Carbon dioxide, that is, breathing.

Human breathing is completed by the respiratory system.

What structure does the respiratory tract have to ensure smooth airflow?

The respiratory tract has bone or cartilage as a scaffold, which can ensure smooth air flow in the respiratory tract. In addition, the nasal hairs in the front of the nasal cavity, the mucus on the surface of the nasal cavity, and the cilia and mucus on the inner wall of the trachea also play a certain role in ensuring smooth airflow.

Discuss

In addition to ensuring smooth airflow, what other functions does the respiratory tract have?

How are these effects achieved?

The respiratory tract also has the function of warming, cleaning and moisturizing the air entering the body: the nasal cavity can preheat the inhaled cold air; the nose hairs and mucus in the nasal cavity can block and stick inhaled dust and bacteria, and the mucus in the nasal cavity can also kill some bacteria And can moisten the air inhaled.

Class exercises:

1. The components of the human respiratory system should be arranged in order ( )

A. Nasopharynx Larynx Bronchus Trachea Lungs

B． nose throat pharynx trachea bronchi lungs

C. Nose, mouth, pharynx, trachea, bronchi

D. Nasopharynx Larynx Trachea Bronchi Lungs

2. Each of the following examples attempts to discuss the advantages of breathing through the nose, but one item is incorrect. It should be ( )

A. Olfactory cells in the nasal mucosa can sense odor stimulation

B． The nasal mucosa is rich in capillaries and can warm the cold air inhaled

C. Nose hairs can block dust in the air that people inhale.

D. The nasal mucosa secretes mucus to clean and moisten the inhaled air

3. When eating while talking and laughing, food can easily enter the trachea. The reason is ( )

A. Airflow impact, glottis split wide B. Airflow impact, laryngeal cavity enlargement

C. The epiglottis cartilage fails to cover the mouth of the larynx D. The cricoid cartilage is enlarged

4． The reason why people have difficulty breathing when they have a cold is ( )

A. The nasal mucosa secretes too much mucus, blocking the nasal cavity

B． The nasal mucosa is congested and swollen, blocking the nasal cavity

C. Too much phlegm secreted by the trachea blocks the respiratory tract.

D. Vocal cords become inflamed and swollen, and air cannot flow smoothly

5. In winter, if the classroom windows are not opened for a long time, many students will feel dizzy and lose concentration. This is because ( )

A. Carbon dioxide concentration is too high, lack of oxygen B. Temperature is too high

C. The concentration of oxygen is too high D. There are too many viruses and bacteria

6. The site where phlegm is produced is ( )

A. Nasal mucosa B. Side wall of larynx

C. Tracheal and bronchial mucosa D. Esophageal mucosa

practise

1. Before performing artificial respiration, remove dirt from the drowning person's mouth and nose. The purpose is to make the drowning person's nose, pharynx, and throat unobstructed to facilitate the passage of air in and out of the lungs. Otherwise, air will easily enter the stomach, and when the air returns, it may drive the food in the stomach back out, causing respiratory tract obstruction and causing suffocation.

2. This shows that the mouth loses a lot of water in the process of humidifying the inhaled air. Breathing through the mouth cannot fully warm up and clean the inhaled air, so it is not as good as breathing through the nose.

3. Acute bronchitis and pneumonia are mainly spread through breathing, droplets and sputum. The "journey" that these pathogenic microorganisms take to reach the patient's disease site is: external air, nose, throat, trachea, and bronchi (for pneumonia, they reach the lungs).

4. If not treated in time, bacteria and viruses in the bronchus can spread to the lungs through the trachea and bronchi, causing pneumonia.

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For more information about the PPT courseware "The Human Body's Respiratory Respiratory Processing of Air", please click the Human Body's Respiratory ppt Respiratory Respiratory Processing of Air ppt tag.

"The processing of air by the respiratory tract" Human Respiration PPT Courseware 6:

"Respiratory Processing of Air" Human Respiration PPT Courseware 6 Digestion of three major nutrients ① Digestion of starch: starch, maltose, glucose Starting place of digestion: oral cavity Complete digestion place: small intestine Digestive juices involved: saliva, pancreatic juice and intestinal juice ② Protein. .

"The processing of air by the respiratory tract" Human Respiration PPT Courseware 4:

"The processing of air by the respiratory tract" Human Respiration PPT Courseware 4 Knowledge Objectives 1. Describe the components of the human respiratory system; 2. Understand the role of the respiratory tract and realize that its ability to process air is limited; 3. Understand the functions of the nose, pharynx, and larynx. ..

"The processing of air by the respiratory tract" Human Respiration PPT Courseware 3:

"Air Processing by Respiratory Respiratory Tracts" Human Respiration PPT Courseware 3 Teaching Objectives 1. Describe the composition of the human respiratory system; 2. Understand the role of the respiratory tract; 3. Recognize that the respiratory tract's ability to process air is limited. Why do babies always come into the world crying?

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Update Time: 2024-11-17

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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