WorksheetsTransport in Mammals
Total questions: 34
Worksheet time: 45mins
The majority of CO2 transport is in the form of
hydrogen carbonate (bicarbonate)
carbomino haemoglobin
CO2 in solution
What enzyme is required for CO2 to be combined with water to make carbonic acid?
carbonic anhydrase
carbonic acid
carbonase
Blood returning from the body enters the
right atrium
left atrium
left ventricle
right ventricle
as the left ventricle contracts, the blood moves to the
aorta
vena cava
arteries
veins
blood returning to the heart from the lungs enters the
right atrium
left atrium
right ventricle
left ventricle
the excitation wave begins at the
sinoatrial node
atrioventricular node
perkyne fibers
the pacemaker region of the heart
SA node
AV node
During atrial systole, the pressure of the blood s __________ in the atrium than the ventricle.
higher
lower
the same
During ventricular systole forces the ___________ valves open.
semilunar
atrioventricular
Heart muscle unlike skeletal muscle is said to be
myogenic
neurogenic
cardiogenic
normal blood pressure
120/80
130/60
120/50
150/90
oxygen saturated protein in blood
oxyhaemoglobin
carbomino haemoglobin
haemoglobin
What is the partial pressure of O2 at respiring tissues?
high
low
what is the partial pressure of CO2 in the lungs?
high
low
What sort of circulatory system is the human circulatory system?
An open circulatory system
A single circulatory system
A double circulatory system
A colloidal osmotic circulation index
In pulmonary circulation blood is taken from...
the heart to the lungs, and back again.
the heart to the rest of the body.
the lungs to the rest of the body.
what happens in systemic circulation
circulation for the entire body
circulation in the heart only
circulation heart and lungs
circulation to digestion system only
Oxyhaemoglobin gives up O2 when …
CO2 concentrations are high.
Body temperature is lowered.
pH values are high.
O2 concentrations are higher.
The acidity due to the accumulation of H+ in erythrocytes is buffered by …
Haemoglobin.
Plasma proteins.
Carbon dioxide.
Oxygen.
Carbonic anhydrase in the erythrocytes …
Catalyzes the removal of oxygen from the erythrocytes.
Catalyzes the conversion of carbon dioxide into water.
Catalyzes the reaction of carbon dioxide with water to form carbonic acid.
Catalyzes the increase in blood pH.
Which of the following is NOT the structure of haemoglobin?
Each haemoglobin molecule contains 4 haem group
Haemoglobin is a quaternary structure
Every each haem group in haemoglobin can bind with 4 molecule of oxygen
Each haemoglobin has 2 α-chain and 2 β-chain polypeptide subunits
The ion found in the haem group is what
Mg2+
O2-
Fe2+
Fe3+
Carbon dioxide and water combine to form
hydrogen carbonate ions
hydrogen ions
carbonic acid
hydrogen bicarbonate
The Bohr Effect/Shift moves the oxygen saturation curve in what direction
up and left
down and right
down and left
up and right
What colour line represents the oxygen saturation curve during intense exercise?
blue
black
red
When carbon dioxide binds directly with haemoglobin it forms
carbaminohaemoglobin
carboxyhaemoglobin
carbon diooxyhaemoglobin
carboglobin
#12
tricuspid valve
mitral/bicuspid valve
aortic valve
pulmonary valve
In the diagram below, which part of the tracing represents the contraction of the atria?
P
T
R
S
The middle layer of a blood vessel is called ___________.
tunica intima
tunica media
tunica adventitia
tunica externa
What type of leukocyte is this?
eosinophil
neutrophil
lymphocyte
monocyte
