Chapter 11 Answers
Ch 11, RQ 3,4 AYK 3, 7
Ch 11 RQ 10 AYK 5
Ch 11 RQ 5, 6, 7, 8
Ch 11 RQ 9 AYK 4
Review Questions
3.
Oxygen diffuses into the blood because it follows a
concentration gradient. It moves from an area of high
concentration (in the alveoli) into an area of lower
concentration (the blood).
CO2 moves out of the blood for exactly the same reason –
along a concentration gradient going the other way.
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4.
(a)
97% - haemoglobin (red blood cells)
3% - blood plasma
(b)
22% - haemoglobin (as carbaminohaemoglobin)
8% - blood plasma
70% - bicarbonate ions in the plasma
5
(a)
Airway
Breathing
Circulation
(b)
When the patient is not breathing and/or collapses.
(c)
When the patient has pulse and can breathe unassisted.
6
(a)
 Recovery position
 Listen/observe for breathing
 Open airway
o Lie on back (optional)
o Tilt head back.
o Lift neck a little.
o Open mouth gently by pulling open mandible.
 Clear airway
(b)
 Observation – listen for hissing sounds and look for
chest rising.
 Feel for air coming out of mouth/nose.
(c)
Feel for pulse – carotid, brachial
Feel for heartbeat.
7
EAR see PDF’s
8
CPR – see PDF’s
9
Don’t smoke.
Avoid passive smoke.
Avoid air pollution and dust.
Avoid volatile chemicals and asbestos.
Apply Your Knowledge
AYK 3, 7
AYK 5
AYK 4
3
PA
PV
Aorta
Inferior VC
Low in oxygen
High in CO2
Darker
High in oxygen
Low in CO2
Lighter
Same as PV but under higher pressure
Low in oxygen
High in CO2
Low pressure
Darker
4
Miner
Asbestos remover
Bar manager
Plasterer
Orchardist
Horticulturalist
Farmer
Masks
Avoid dust
Masks
Respirators
Suits
Decontamination showers
Enforce smoking laws.
Masks
Respirators
Masks
Respirators
When using sprays.
5.
They gradually grow more red blood cells which gives
them increased oxygen carrying capacity in low oxygen
air. This means that they can release more energy from
their cells during cellular respiration.
7.
(a)
When haemoglobin combines with oxygen, the molecule
changes and reacts with light differently. This gives
blood a bright red colour.
In most arteries because the blood is oxygenated and is
bright red.
In the pulmonary arteries however it is NOT oxygenated
and is a darker purple colour.
(b) Similar story…
In the pulmonary veins blood has just been oxygenated in
the lungs and is heading toward the left atrium. It is
bright red.
In all your other veins it is deoxygenated and is a darker
colour.
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