Unit 2H: Exchange, transport and reproduction in humans revision
Go to www.spolem.co.uk, click on internet lessons, then unit 2H revision.
Topic 2H.1
Exchanges with the environment
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Go to Epithelia.
Work through the tutorial (follow the feet to get to the next page). Keep going
until you have identified the mystery slides in the quiz.
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Go to Anatomy and physiology of the respiratory system.
Answer the following questions:
1. List the structures (in order) that a molecule of oxygen will pass through on
its journey from the air to the blood.
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2. Where and how are oxygen and carbon dioxide exchanged?
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Go to Respiratory system to try a multiple choice test.
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Go to Lung toxicology problem set to try multiple choice questions on lung
structure and the effects of smoking.
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Go to Life gas exchange in mammals.
Work through tutorial 48.2 (airflow in mammals) and activities 48.1 and 48.3.
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The next section was to visit two sites on oxygen transport and carbon dioxide
transport to explain how these are transported in the blood. Unfortunately these
sites have gone so you’ll have to find this out for yourself!
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Go to GI system.
Answer the following questions:
1. What type of epithelium lines the oesophagus? …………………………………………………………
2. What is the name for the muscular contractions which move food through the
system?…………………………………………………………………………………
3. How is the structure of the ileum adapted for maximum absorption?
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Go to Life animal nutrition.
Work through activity 50.2
Topic 2H.2 Transport of materials
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Go to Cardiovascular system anatomy and physiology.
Answer the following questions:
1.
2.
3.
4.
Where are the pacemaker cells located?……………………………………………………………………
What is systole?………………………………………………………………………………………………………………
What is diastole?……………………………………………………………………………………………………………
Draw and label a normal ECG wave below.
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Go to Primer on ECG for more information on these.
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Go to Cardiology the visible heart for an animation on blood flow through the
heart.
Go to Life circulatory systems.
Work through tutorial 49.1 (the cardiac cycle) and activities 49.2 and 49.3.
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Go to Red blood cells.
Look through the following slides to help you fill in the “drawing” column of the
table below.
Type of blood cell
Erythrocyte
Neutrophil
Drawing
Function
Eosinophil
Monocyte
Lymphocyte
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Now go to Blood cell histology to help you fill in the “function” column.
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Go to Practice quiz for blood components to try some multiple choice questions.
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Go to Basic quiz for some questions on the above topics.
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Go to Circulation questions for some past exam questions – you need to click on
Heart, T.Fluid and Cycle under Questions and Exercises.
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Finally go to Revision and answer questions 1-8 and 11-15
Topic 2H.3 Human ecology
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Go to Life temperature regulation.
Work through the control regulation and feedback tutorial.
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Go to Homeostasis.
Work through the sections on body temperature (section 2) and the skin.
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Go to Human adaptations to external environment for a set of revision notes on
this topic.
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Go to the Human ecology links section of www.spolem.co.uk (look in A level biology)
if you need to remind yourself of the effects of extreme temperature or high
altitude on the body.
Topic 2H.4 Human reproduction and development
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Go to S-cool reproduction.
Answer the following questions:
1. What is spermatogenesis and where does it occur?
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2. What is a Sertoli cell?
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3. Spot the mistake in the drawing of the sperm.
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4. What is the production of eggs called?
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5. What is a corpus luteum?
…………………………………………………………………………………………………………………………………………………
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6. Name four substances that cross the placenta and in which direction they go.
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Go to Life animal reproduction.
Work through tutorial 42.1 (ovarian and uterine cycles), then do activities 42.1,
42.2 and 42.3.
Go to Reproduction and development for some multiple choice questions.
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Go to Human Reproduction problem set for lots more questions and tutorials.
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Then go to Basic quiz for yet more questions.
General revision on this Unit
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Go to AS Guru organs and systems.
Work through the animations and answer the questions.
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Go to Past exam questions.
Look for suitable questions to tackle.