7/25/2019 Valves Blood Vessels and Plaque

1/3

Science Press

Dot Point HSC Senior Science70Medical Technology - Bionics

2.8 Identify the types of materials used to make pacemakers and the properties that make these suitable for

implanting in the body.

2.8.1 Identify two types of materials used in the manufacture of pacemakers.

2.8.2 For each of the materials identified in Question 2.8.1, identify the properties that make

themsuitable for implanting in the body.

2.9 Describe the problems that can result from faulty valves in the heart.

2.9.1 Identify the number of valves in the heart and the sites where they occur.

2.9.2 Identify the function of these valves.

2.9.3 escribe the problems that can result from faulty valves in the heart.

2.9.4 !utline reasons why heart valves sometimes need to be replaced.

2.1 !rocess information to identify different types and functions of artificial valves in the heart.

2.1.1 "eplacement heart valves may be taken from an animal, e.g. a pig, or manufactured

from synthetic materials. Identify the re#uirements of an artificial heart valve that allow

it to function effectively.

2.1.2 escribe two different types of manufactured heart valves. Include diagrams in your

answer.

2.11 Describe the properties of materials such as "eflon#pyrolytic carbon that make them versatile materials

for making artificial body parts$ including heart valves.

2.11.1 escribe the properties of pyrolytic carbon, metal alloys and $eflon that make these

materials suitable for use in manufacturing artificial body parts, including heart valves.

2.12 %onstruct a simple model to demonstrate the function of valves in the heart.

2.12.1 escribe the model that you constructed to demonstrate the function of valves in the

heart and e%plain how your model functions as a valve. Include a diagram in your

answer.

2.12.2 !utline advantages and disadvantages of your model.

2.13 Describe and e&plain the effects of a build'up of pla(ue on the )alls of ma*or arteries and veins on blood

flo) to and from the heart.2.13.1

+a, &la#ue builds up on the inside of the walls of arteries and veins. efine pla#ue.

+b, Identify possible effects of pla#ue build'up.

2.13.2 $he following photograph shows the outside of a model of the heart. Indicate the

position of the coronary blood vessels that supply the walls of the heart with blood.

7/25/2019 Valves Blood Vessels and Plaque

2/3

artery open

Science Press

Dot Point HSC Senior Science71Medical Technology - Bionics

2.12 iscuss ways in which pla#ue could be eliminated or altered to ease blood

flow. 2.1(.1

)a* Identify ways to reduce the build'up of pla#ue in blood vessels.

)b* Identify two ways in which pla#ue could be eliminated or altered to ease blood flow.

2.1+ ather information from secondary sources on techni#ues used, including angioplasty, to ease

blood flow to and from the heart and in blood vessels, when there has been a build'up of

pla#ue.

2.1+.1 efine angioplasty.

2.1-.2

)a* Identify the obect being inserted into an artery in the following diagram and e%plain how

this procedure is carried out.

Cath

eter

)b* /%plain why this techni#ue might be necessary.

)c* !utline two other possible methods of dealing with this problem of pla#ue build'

up in arteries.

7/25/2019 Valves Blood Vessels and Plaque

3/3

2.1-.+ 0se a diagram to describe what is meant by bypass surgery.

2.1- ather$ process and analyse information to outline areas of current research in

heart transplants and#or artificial hearts and their impact on society.

2.1-.1

)a* /%plain what is meant by an artificial heart.

(b) !utline the use of artificial hearts.