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Teaching time: 3 hours Practical time: 0.5 hours for a pluck (lungs and heart dissection)
Teaching time: 3 hours Practical time: 0.5 hours for a pluck (lungs and heart dissection)
1 hour for required practical 6.
1 hour for required practical 6.
key vocabulary
key vocabulary
Exercise 1: Use the quizlet learn function to study these terms
Review 6.2 the blood system
Review 2.8 cell respiration
Structure & Function of the ventilation system
Structure & Function of the ventilation system
Essential idea: The lungs are actively ventilated to ensure that gas exchange can occur passively.
Exercise 2: Watch this video and connect-extend-challenge
U1: Ventilation maintains concentration gradients of oxygen and carbon dioxide between air in alveoli and blood flowing in adjacent capillaries.
Exercise 3: Outline the difference between ventilation, gas exchange and respiration.
Exercise 4: Use moylmods and your phone to make a short video explaining why it is important for concentration gradients of oxygen to be maintained.
U4: Air is carried to the lungs in the trachea and bronchi and then to the alveoli in bronchioles.
U5: Muscle contractions cause the pressure changes inside the thorax that force air in and out of the lungs to ventilate them.
U6: Different muscles are required for inspiration and expiration because muscles only do work when they contract.
A3: External and internal intercostal muscles, and diaphragm and abdominal muscles as examples of antagonistic muscle action.
Exercise 5: Describe the process of ventilation with reference to antagonistic muscle action.
Exercise 6: Study this diagram of the ventilation system using "learn"
Adaptations of the Ventilation system
Adaptations of the Ventilation system
U2: Type I pneumocytes are extremely thin alveolar cells that are adapted to carry out gas exchange.
U3: Type II pneumocytes secrete a solution containing surfactant that creates a moist surface inside the alveoli to prevent the sides of the alveolus adhering to each other by reducing surface tension.
Exercise 7: Study this diagram using "learn"
Guidance from the syllabus: Students should be able to draw a diagram to show the structure of an alveolus and an adjacent capillary.
Lung disease
Lung disease
NoS: Obtain evidence for theories—epidemiological studies have contributed to our understanding of the causes of lung cancer. (1.8)
A1: Causes and consequences of lung cancer.
A2: Causes and consequences of emphysema.
Exercise 8: create a presentation on the causes and consequences of lung cancer and emphysema
Practical 6: Monitoring ventilation
Practical 6: Monitoring ventilation
S1: Monitoring of ventilation in humans at rest and after mild and vigorous exercise. (Practical 6)
Download more (free) resources for this topic from my TES shop
Download more (free) resources for this topic from my TES shop
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