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How big do you think the surface area of the alveoli in one set of human lungs is? 7 m 2 70 m 2 170 m 2
Messenger and Scribe Organise yourselves into groups of four. Nominate one person from your group to be messenger…
The alveoli One cell thick - squamous epithelial cells Covered in network of capillaries Folded Found in large numbers in the lungs
The alveoli under the microscope
Emphysema: based on the image alone – what do you think the symptoms of emphysema are?
Pneumonia: based on the image alone – what do you think the symptoms of pneumonia are?
Making Notes Alveoli as an Exchange Surface Cells involved? Tissues involved? Main features? How do they apply to Ficks law?
Gas Exchange IB Biology
Lungs By the end of the lesson you should be able to: Label the internal structures of the lungs State the features of the alveoli which allow efficient.
Epithelial Tissues Slide courtesy of Mary Atchison, St. Charles Community College (archived at lionden.com)
O 2 AND Athletic Performance. ALVEOLI IN THE LUNG Alveoli are the places where gas exchange occurs in the lung. Why is surface area an important consideration.
Lung Structure and Function AQA Biology and Disease.
Respiratory system Lesson 4 Gaseous exchange. LO – Level 4 –To state where oxygen gets into the blood and how it is transported around the body. Level.
Lab Exercise Classification of Tissues: Epithelial Tissue Tissue: a collection of similar cells working together Epithelial Tissue: cells that line the.
Classification of Tissues: Epithelial Tissue
September 5-8, What are these? Tissues! Epithelial Tissue – Epithelial Tissue – lining, covering, & glandular lining, covering, & glandular Connective.
Gas exchange in the alveoli The alveoli are bunches of tiny air sacks inside the lungs. Each individual sack is called an alveolus. They are located at.
Word list: capillaries blood bronchioles alveolus alveoli
Why would enzymes have different optimums
Genes and Health Think about GCSE – What do you know about Genes/Genetics? What do these words make you think of? What affects do our Genes have on health?
Movement across membranes –List the types of membrane transport and their energy source. – Explain saturation, competition, and specificity for any transport.
Bellwork Which blood vessels (all sizes) deliver blood to the lungs from the heart? Which take blood back to the heart from the lungs (all sizes)? What.
1- Epithelial tissue covers surfaces with an uninterrupted layer of cells. 2- Epithelial cells are attached to one another. They are sheets of continuous.
12.1 – Cell Differentiation and Organisation
The Respiratory System Major Function of the Respiratory System: To supply the body with O 2 and dispose of CO 2.
Homework 1.Q 2,3,4 pp Complete todays lesson work (role of the alveolus in gas exchange) 3.Red p75 mah 4.Red p77 mah 5.Red q p79 mah.
Epithelial Tissues. What type of epithelial tissue makes up the tube shown below? 1.Simple squamous 2.Stratified squamous 3.Simple cuboidal 4.Stratified.
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