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WorksheetsMCHAPTER 18
Total questions: 54
Worksheet time: 2hrs 49mins
The opening of semilunar valves is due to
increased ventricular pressure
decrease ventricular pressure
increased aortic pressure
increase in artrial volume
During artrial systole, the ventricles are
in systole
in diastole
contracting
not filling
The relation with ECG, during third heart sound,
coincides with R wave
coincides or after submit of T waves
between T & P wave
between P and Q wave
Which component of ECG cycle shows ventricular depolarisation?
P
QRS
T
U
In the diagram below, which part of the tracing represents the contraction of the atria?
P
T
R
S
What shows the time a signal is delayed at the AV nodes?
PR segment
ST segment
PR interval
QRS complex
State the phase of cardiac cycle shown in the diagram.
Atrial systole, ventricular systole
Atrial diastole, ventricular systole
Atrial systole, ventricular diastole
Atrial diastole, ventricular diastole
State the phase of cardiac cycle shown in the diagram.
Atrial systole, ventricular systole
Atrial diastole, ventricular systole
Atrial systole, ventricular diastole
Atrial diastole, ventricular diastole
State the phase of cardiac cycle shown in the diagram.
Atrial systole, ventricular systole
Atrial diastole, ventricular systole
Atrial systole, ventricular diastole
Atrial diastole, ventricular diastole
What happen to the valves in the heart during the phase of cardiac cycle shown in the diagram.
Atrioventricular valves open, semilunar valves open
Atrioventricular valves open, semilunar valves close
Atrioventricular valves close, semilunar valves open
Atrioventricular valves close, semilunar valves close
What happen to the valves in the heart during the phase of cardiac cycle shown in the diagram.
Atrioventricular valves open, semilunar valves open
Atrioventricular valves open, semilunar valves close
Atrioventricular valves close, semilunar valves open
Atrioventricular valves close, semilunar valves close
What happen to the valves in the heart during the phase of cardiac cycle shown in the diagram.
Atrioventricular valves open, semilunar valves open
Atrioventricular valves open, semilunar valves close
Atrioventricular valves close, semilunar valves open
Atrioventricular valves close, semilunar valves close
A complete of a cardiac cycle takes place for about
8 seconds
0.8 second
0.3 second
0.4 second
Atrial & Ventricular diastole takes place for about?
0.1 second
0.4 second
0.3 second
0.8 second
Atrial systole & Ventricular diastole phase takes place for about?
0.1 second
0.4 second
0.3 second
0.8 second
The first sound of heart, "lub" produced when
Atrioventricular valves open, semilunar valves open
Atrioventricular valves open, semilunar valves close
Atrioventricular valves close, semilunar valves open
Atrioventricular valves close, semilunar valves close
The second sound of heart, "dup" produced when
Atrioventricular valves open, semilunar valves open
Atrioventricular valves open, semilunar valves close
Atrioventricular valves close, semilunar valves open
Atrioventricular valves close, semilunar valves close
During Atrial systole & Ventricular diastole phase, pressure between atria and ventricles?
Pressure in atria are greater than ventricles
Equal pressure in atria and ventricles
Pressure in ventricles are greater than atria
During Atrial & Ventricular diastole phase, pressure between atria and ventricles?
Pressure in atria are greater than ventricles
Equal pressure in atria and ventricles
Pressure in ventricles are greater than atria
During Atrial & Ventricular diastole phase, what happen between vena cava, right atrium & right ventricles?
Pressure in vena cava is greater than in atrium and pressure in atrium is greater than ventricles, hence blood flow from vena cava into the right atrium and into the right ventricles by passive transport.
Pressure in vena cava is lower than in atrium and pressure in atrium is lower than ventricles, hence blood flow from vena cava into the right atrium and into the right ventricles by passive transport.
Pressure in vena cava is greater than in atrium and pressure in atrium is lower than ventricles, hence blood flow from vena cava into the right atrium and into the right ventricles by passive transport.
Pressure in vena cava is greater than in atrium and pressure in atrium is greater than ventricles, hence blood flow from vena cava into the right atrium and into the right ventricles by active transport.
During Atrial systole & Ventricular diastole phase, which event is correct?
Blood flow from atria into ventricles
AV valves closed
Pressure in ventricles are greater than atria
Semilunar valves open
During Atrial diastole & Ventricular systole phase, which event is wrong?
Blood flow into the atria through vena cava and pulmonary vein
Semilunar valves are opened
Blood flow out of heart through aorta and pulmonary artery
Atrioventricular valves are closed and produced "dub" sound
Which is the correct sequence of phases in cardiac cycle?
Atrial systole, ventricular diastole ; Atrial diastole, ventricular systole ; Atrial & ventricular systole
Atrial diastole, ventricular systole ; Atrial systole, ventricular diastole ; Atrial & ventricular systole
Atrial systole, ventricular diastole ; Atrial diastole, ventricular systole ; Atrial & ventricular diastole
Atrial diastole, ventricular systole ; Atrial systole, ventricular diastole ; Atrial & ventricular diastole
What is the type of muscle involves in cardiac cycle?
Smooth muscle
Cardiac muscle
Skeletal muscle
Transport of sucrose from source to the sink is
Translocation
Transpiration
Respiration
Photosynthesis
Which of the following functions as a source during translocation in plants?
Merismetic tissue in the root
Leaves
Roots
Fruits and flowers
Transport of sucrose from source to sink is via
tracheid & vessel element
sieve tube & companion cell
xylem
plasmodesmata
Which of the following is NOT functions as a sink during translocation in plants?
Shoots
Roots
Leaves
Fruits
The loading of sucrose into sieve tubes is by ________ transport and consequently, requires ___________.
Active; ATP
Passive; energy
Active; ions
Passive;ions
Why glucose converted to sucrose before translocation occur?
Sucrose is large molecule
Sucrose is non-reducing sugar
Sucrose is reducing sugar
Sucrose is insolluble in water
What is the important of companion cell between source and sieve tube?
Provide glucose for active transport
Provide ATP for active transport
Provide ATP for passive transport
Provide glucose for passive transport
Loading of sucrose actively in the sieve tube will causes
Water pressure in sieve tube decrease
Accumulation of sucrose in sieve tube and water potential remain unchanged
Sucrose dissolved in water and lowered the water potential in sieve tube
Sucrose converted into dissolved glucose which lowered the water potential in sieve tube
In the pressure flow hypothesis of translocation, what causes the pressure?
Root pressure
The osmotic uptake of water by sieve tubes at the source
The accumulation of minerals and water by the stele in the root
The osmotic uptake of water by the sieve tubes of the sink
Movement of water from xylem into sieve tube by osmosis will create a pressure in the sieve tube which is known as
Root pressure
Osmotic pressure
Hydrostatic pressure
Water pressure
During translocation, which of the below is NOT correct about hydrostatic pressure in the sieve tube.
Hydrostatic pressure in source is higher than in sink
Hydrostatic pressure in source is lower than in sink
Hydrostatic pressure push the fluid from region with high hydrostatic pressure to lower hydrostatic presure.
Hydrostatic pressure increase due to low osmotic pressure in sieve tube
Unloading of sucrose into the sink, will causes all of these EXCEPT
Increasing of osmotic pressure in sieve tube
Higher water potential in sieve tube compare to in xylem
Water diffuse by osmosis from sieve tube to xylem
Increasing water potential in xylem and water moves upwards due to transpiration
What does xylem transport?
Water and minerals
Water only
Sugar
Food
Without the process of transpiration, a plant would be unable to...
Move sucrose from the leaves to the roots.
Create new proteins for the plant.
Pull up new water and mineral ions from the roots to the leaves.
Grow towards the light.
After water enters the plant, water travels from the root hair cells, through the ... to the xylem vessels
phloem
cortex
mesophyll cells
cuticle
Water movement through cellulose cell wall without entering protoplast of root cells is called
symplast pathway
vacuolar pathway
apoplast pathway
cellulose pathway
Root pressure is caused by
active loading of water molecules into xylem vessels by endordermis cells
active loading of salts into xylem vessels by endodermis cells
xylem vessels using energy to actively load water upwards
movement of water molecules upwards in xylem vessels through osmosis
Casparian strip on endodermis cell are made of
Lignin
Pectin
Suberin
Cellulose
The casparian strip at the endodermis blocks which pathway
Apoplast
Symplast
Transpiration
Evaporation
How do mineral ions enter a plant?
by osmosis in root hair cells
by active transport in root hair cells
through the stomata
through the roots
