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WorksheetsHeart Actions (from notes)
Total questions: 12
Worksheet time: 12mins
Systolic pressure in the heart is when
blood is pumped out of the left ventricle
the aortic valve opens
the ventricle relaxes
the aortic valve closes
Diastolic pressure is when
aortic valve closes
aortic valve opens
the ventricle relaxes
ventricle contracts
Flaps of the bicuspid and tricuspid valves are anchored to the ventricle walls by
super glue
chordate tendineae
papillary muscles
junctional fibers
A device used to measure blood pressure is called
stethescope
calorimeter
EKG
sphygmomanometer
Factors affecting blood pressure include
cardiac output
breathing rate
peripheral resistance
bone density
blood viscosity
The ECG/EKG is a test to determine
blood pressure
the heart's rhythm and electrical activity
blood type (O,A, AB, B)
bone density
The P Wave in an EKG is the
repolarization of the ventricles
depolarization of the atria
depolarization of the ventricles
contraction of the ventricles
The "pacemaker" of the heart is the
Sinoatrial (S-A) node
Junctional Fibers
Atrioventricular (A-V) node
AV bundle
Cardiac output =
systolic pressure/diastolic pressure
SA node/AV node
stroke volume x heart rate
pulse x blood pressure
If a person's heartbeat is about 100 bpm (beats per minute) this abnormal heart rhythm is called
brachycardia
fibriliation
atrial fibrilation (Afib)
tachycardia
The cardiac cycle is
how the muscle tissue of the heart conducts impulses
the pressure of the blood throughout the body
one complete heartbeat
the path of the blood through the heart
Regulation of cardiac cycle -
increase muscle activity = decrease in heart rate
increase in body temperature = decrease in heart rate
increase of potassium ions = decrease in heart rate
decrease in calcium ions = increase in heart rate
