1. Materia: Biology Senior 3
Profesora: Ma. Magdalena Ravagnan
Contenido nodal: Nutrition and transport in humans
SEGUNDO TRIMESTRE
Fecha de presentación: Tuesday December 11th
A- Human nutrition
1) Fig.1 shows the human digestive system
(a) Label on the diagram: mouth- oesophagus- stomach- small intestine- large intestine- anus-
Liver- pancreas- gall bladder
(b) Using the appropriate letter, label where each of the following is produced:
- an amylase, (A) - bile (D)
- hydrochloric acid, (B) - pepsin (E)
- a lipase, (C) - absorption (F)

2. 2) Table 1 shows information about the composition of a fruit.
a)
b)
c)

3. B- Transport in humans
1) Fig 1 shows a section through the heart
(a) Label parts A, B, C and D
(b) Shade the cavity of the ventricle which contains oxygenated blood.
(c) Outline the function of structure A
(d) Suggest why the wall around chamber C is much thick than that around chamber D
2) The coronary arteries supply blood to the heart muscle.
a- Suggest two activities of humans which might cause a clot in the coronary artery.
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b- Explain what might be the result of such a blockage.
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