Homework
Learning Package 6, BOOK 2
• Q2(a), (b)(i)
• Q3(a) – (d)(i)
• If you are unsure of any of these questions, ASK ME FOR HELP
• Due Thursday 18th September
• No homework = Friday afternoon detention with Miss Tagore

Lesson Starter
• Mapping from memory… you have 10 minutes
to reproduce an unseen image…
• First group to complete without cheating wins
a prize!!!
Title: The Lungs
22 March 2016
Learning question: How are the lungs adapted for
supplying oxygen to the body?
Homework: AS Human Biology Booklet 2 (Year 12) Learning Package 6
Aims from specification
(a) explain the meaning of the terms tissue and organ;
(b) explain the relationships between cells, tissues and
organs, with reference to squamous epithelial cells in the
alveoli of the lung;
(c) describe, with the aid of diagrams and photographs, the
structure of ciliated epithelium, goblet cells and squamous
epithelial cells and relate their structures to their functions;
(d) describe and interpret photomicrographs of lung tissue;
(a) explain the meaning of the terms tissue
and organ;
• In pairs, find the definition of the words tissue
and organ
• Write out a definition for you and your partner
to exchange
– If looking for the word tissue read page 48 of textbook
– If looking for the word organ read page 49 of textbook
Can you relate this to our lesson?
(b) explain the relationships between cells,
tissues and organs, with reference to squamous
epithelial cells in the alveoli of the lung;
• Is there any difference between these two images?
• What are they?
• Can you explain the differences using the words cell and tissue?
(c) describe, with the aid of diagrams and photographs, the
structure of ciliated epithelium, goblet cells and squamous
epithelial cells and relate their structures to their functions;
Why are squamous
epithelial cells used in
the alveoli of the lungs?
• Squamous epithelial cells are
flat, thin cells.
• These cells form the alveoli (air
sacs)
• Because they are thin, O2 and
CO2 have less barriers to get
through
• This makes diffusion of gases
efficient
Why smoking isn’t cool…
• Note about Smoking: Smoke paralyses the
cilia and continued smoking destroys the
cilia / ciliated cells, which are then
replaced by goblet cells.
• This causes the accumulation of excess
mucus in the lungs - together with
particles, tar, and carcinogens.
Your task
• READ pages 48-49 again. Make sure you understand it!
• Answer questions 1-3 on page 49 in full sentences – this is
part of your class note.
• Mark your answers with a different colour pen
• Move on to practical 
Practical work
(d) describe and interpret photomicrographs of lung tissue;
• Using bioviewers to identify cells and tissues in the lungs
• You WILL be examined on this in June!!!
Homework
Learning Package 6, BOOK 2
• Q2(a), (b)(i)
• Q3(a) – (d)(i)
• If you are unsure of any of these questions, ASK ME FOR HELP
• Due Thursday 18th September
• No homework = Friday afternoon detention with Miss Tagore
