Download Control of the Cardiac Cycle

Control of the Cardiac Cycle
L.O: to list the three structures involved in controlling the
cardiac cycle
to describe how the cardiac cycle is controlled
Starter: Complete the table below using the words ‘open’ or
‘closed’
Stage
Diastole
Atrial Systole
Ventricular
Systole
Atrioventricular
valves
Semi lunar
valves
Cardiac Cycle
Stage
Diastole
Atrial
Systole
Ventricular
Systole
Atrioventricular Semi lunar
valves
valves
Cardiac Cycle
Stage
Atrioventricular Semi lunar
valves
valves
Diastole
Open
Closed
Atrial
Systole
Open
Closed
Ventricular
Systole
Closed
Open
1.
2.
3.
4.
?
5.
6.
7.
Blood Pressure
• Systolic pressure is the
pressure at which the blood
leaves the heart through the
aorta.
Systolic
Diastolic
< 100
< 60
100-139
60-89
Borderline 140-159
90-94
Hypertension
>94
< normal
• Diastolic pressure is the
minimum blood pressure in
the aorta.
Normal
• Blood pressure can be
measured with a
sphygmomanometer: first
reading is systolic and
second is diastolic then
represented as a fraction.
>159
Control of the Cardiac Cycle
http://highered.mcgrawhill.com/sites/0072495855/student_view0/c
hapter22/animation__conducting_system_
of_the_heart.html
Control of the Cardiac Cycle
Three stages of the cardiac cycle are
controlled by three structures:
Control of the Cardiac Cycle
The three stages of the cardiac cycle are
controlled by three structures:
1. Sinoatrial node
2. Atrioventricular node
3. Bundle of His
Control of the Cardiac Cycle
• Write in your own words what happens
during the cardiac cycle
• Use the heart structure worksheet to help
you
• Use as many keywords / structures as
possible!
Keyword Quiz!
• Unjumble the keywords about the heart to
solve the hidden message at the bottom of
your sheet!