Physiology exam 3 lecture guide
Study online at https://quizlet.com/_ewg23a
1. List the chambers, vessels, sad
and valves of a heart in the
order in which blood flows.
2. Explain the role of fetal The foramen ovale allows the transfer of of the blood from the
shunts in directing blood right to left atrium and Arterial duct permits the transfer of blood
flow during fetal develop- from pulmonary arteries to the aorta
ment. Indicate the locations
of the foramen ovale and ar-
terial duct.
3. Define myogenic Myogenic - contractions are the result of signals generated by the
muscle itself ( no external signals from the NS)
4. Define autorhythmicity Autorhythmicity the ability to spontaneously produce action po-
tentials in a periodic, repeatable manner
5. What parts of the heart Sinoatrial (SA) node
serve as pacemakers? Atrioventricular (AV) node
6. Explain the role of the intrin- SA node generates the AP causing the atria to contract and activate
sic conduction system in de- the AV node that causes an AP to contract the ventricles
termining the pattern of car-
diac contractions. Be sure to
be able to label all of the
parts of the ICS and indicate
their roles in contraction.
1/8
, Physiology exam 3 lecture guide
Study online at https://quizlet.com/_ewg23a
7. Define Einthoven's Triangle Einthoven's triangle is used to determine the position of the heart
(should be familiar from lab!) in the thoracic cavity. It is found by recording the base to peak and
and explain why it works to base to trough of all three leads and putting them in the triangle. It
discern the position of your works because of the synchronized heart activity and conductivity
heart. of body fluids
8. Differentiate between 'leads' Leads consists of two electrodes, one positive and one negative
and 'electrodes' in measur- while electrodes are attached to the skin surface, carries electricity
ing an electrocardiogram. from an instrument to the patient and where the leads connect
9. Draw and label an ECG. What 1. P - Wave - Atrial depolarization (contraction)
electrical events contribute 2. QRS Complex - Ventricular depolarization (contract) and atrial
to each part? repolarization (relax
3. T - Wave - Ventricular repolarization (relax)
2/8
Study online at https://quizlet.com/_ewg23a
1. List the chambers, vessels, sad
and valves of a heart in the
order in which blood flows.
2. Explain the role of fetal The foramen ovale allows the transfer of of the blood from the
shunts in directing blood right to left atrium and Arterial duct permits the transfer of blood
flow during fetal develop- from pulmonary arteries to the aorta
ment. Indicate the locations
of the foramen ovale and ar-
terial duct.
3. Define myogenic Myogenic - contractions are the result of signals generated by the
muscle itself ( no external signals from the NS)
4. Define autorhythmicity Autorhythmicity the ability to spontaneously produce action po-
tentials in a periodic, repeatable manner
5. What parts of the heart Sinoatrial (SA) node
serve as pacemakers? Atrioventricular (AV) node
6. Explain the role of the intrin- SA node generates the AP causing the atria to contract and activate
sic conduction system in de- the AV node that causes an AP to contract the ventricles
termining the pattern of car-
diac contractions. Be sure to
be able to label all of the
parts of the ICS and indicate
their roles in contraction.
1/8
, Physiology exam 3 lecture guide
Study online at https://quizlet.com/_ewg23a
7. Define Einthoven's Triangle Einthoven's triangle is used to determine the position of the heart
(should be familiar from lab!) in the thoracic cavity. It is found by recording the base to peak and
and explain why it works to base to trough of all three leads and putting them in the triangle. It
discern the position of your works because of the synchronized heart activity and conductivity
heart. of body fluids
8. Differentiate between 'leads' Leads consists of two electrodes, one positive and one negative
and 'electrodes' in measur- while electrodes are attached to the skin surface, carries electricity
ing an electrocardiogram. from an instrument to the patient and where the leads connect
9. Draw and label an ECG. What 1. P - Wave - Atrial depolarization (contraction)
electrical events contribute 2. QRS Complex - Ventricular depolarization (contract) and atrial
to each part? repolarization (relax
3. T - Wave - Ventricular repolarization (relax)
2/8
