Draw – Label – Annotate(Starter activity)

Previously you have learnt about the digestive system. Get ready, make sure you have access to:• (sharp) pencil• ruler• A3 paper

By Chris Paine

https://bioknowledgy.wikispaces.com/

• You are drawing, labelling and annotating the digestive system:(IG) 2.63 describe the structure of the heart and how it functions(DP) 6.2.1 Draw and label a diagram of the heart showing the four chambers, associated blood vessels, valves and the route of blood through the heart. AND 6.2.3 Explain the action of the heart in terms of collecting blood, pumping blood, and opening and closing of valves.

• The group will the highest total will receive a reward.

Draw – Label – Annotate Guidelines

Draw – Label – Annotate Guidelines1. Form groups of three students2. Everyone draws a heart DO NOT Label (2 mins)3. Pass your drawing to the next person in your group4. Everyone labels the drawing they have in front of them DO

NOT Annotate and DO NOT add to the drawing (1 min)5. Pass the labelled drawing to the next person in your group

(you should be looking at a different drawing again)6. Annotate EXISTING LABELS only (3 mins)

7. Now for the reflection: trade your group’s papers with a different group (the teacher might ask you to rotate papers between groups rather than trade)

8. Mark the drawings according to the mark scheme you are shown on the next slides

Labelling (1 mark each, 13 max)Mouth

Oesophagus

Liver

Gall bladder

Large Intestine

Anus

Stomach

Small intestine

Pancreas

Rectum

(bicuspid valve)

n.b. the pulmonary and aortic valves are also known as the semi-lunar valves

Source: i-biology.net

Annotations (1 Mark for each, 13 max)Structure Function

Vena cava

• Collects deoxygenated blood from the body and delivers it to the heart

Right atrium

• Collects (deoxygenated) blood from the vena cava• Walls Contract to push blood into the right ventricle

(both points needed for the mark)Tricuspid valve

(Opens to allow blood to flow from the right atrium to the right ventricle - extra info not needed for the mark)• Closes to prevent backflow of (deoxygenated) blood (from the right

ventricle) to the right atrium

Right Ventricle

• Walls of the ventricle contract to push (deoxygenated) blood into the pulmonary artery (and hence the lungs)

Pulmonary Valve

Opens to allow blood to flow from the right ventricle - extra info not needed for the mark)• Closes to prevent backflow of (deoxygenated) blood into the right

ventricle (from the pulmonary artery)Pulmonary artery

• Transports deoxygenated blood to the lungs (where gas exchange happens and it becomes oxygenated)

Annotations (1 Mark for each, 13 max)Structure Function

Pulmonary vein

Transports oxygenated blood from the lungs to the heart

Left atrium

• Collects (oxygenated) blood from the Pulmonary vein• Walls Contract to push blood into the left ventricle

(both points needed for the mark)mitral / bicuspid valve

• Closes to prevent backflow of blood (from the left ventricle) to the left atrium

Right Ventricle

Wall contract to push (oxygenated) blood out into the aorta (and then the body, except lungs)

Aortic Valve (Closes to prevent backflow of (oxygenated) blood into the left ventricle (from the pulmonary artery)

Aorta • Transports oxygenated blood to the the body (except lungs)

Thick cardiac muscle

• Allows the heart chambers to contract and therefore create pressure to pump blood

Deductions

• -1 for for label lines not drawn with a ruler• -1 arrow heads on label lines (I know the example

diagram did have arrow heads, but this is bad practise)

• -1 for drawing <1/2 a page in size• -1 for shading• -1 for sketching rather than outlining

n.b. deductions are per drawing, not per incidence

Reflection

• Total the marks by group to see which group did best– Rewards for the best group

• In groups discuss what group you are marking did well and what they could improve on. Comments should be in terms of “next time they should …”

• As a class share your “next time” recommendations is there a lot of similar mistakes being made?

• Return drawings• Using your feedback produce an excellent example drawing

to add to your notes