The cardiac conduction pathway is the pathway of a heartbeat
electrical impulses that generates __________.
The SA node is in the wall of the _________. right atrium
The SA node contracts about ________ times per minute. 75-100
The ______ initiates each heartbeat. SA node
A rest, the SA node depolarizes _________ per minute. 75
The ______ is the pacemaker. SA node
If the SA node becomes nonfunctional, the _________ can AV node
initiate each heartbeat.
The AV node has a rate of ____________. 40 to 60 beats per minute
__________ can generate the beat of the ventricles. The bundle of His
The bundle of His has a rate of _______. 20 to 35 beats per minute
______ is the contraction (emptying). Systole
_______ is the relaxation (filling). Diastole
_________ is the first heart sound heard at the beginning of S1 "lub"
systole when the tricuspid and mitral valves close.
________ is the second heart sound that is heard at the S2 "dub"
start of diastole when the aortic and pulmonic
semilunar valves close.
Ejection fraction is normally __________. 55% to 70%
The hormone __________ is secreted by the adrenal epinephrine
medulla in stressful situations as it increases cardiac
output and systolic blood pressure.
The hormone _________ is produced by the adrenal cortex aldosterone
and it helps regulate the blood levels of sodium and
potassium.
, Med Surg Chapters 21, 23, & 25 Cardiovascular Exam
__________ are needed for normal electricity activity of the Sodium and potassium
myocardium.
________ is secreted when a higher blood pressure or Atrial natriuretic peptide (ANP)
greater blood volume stretches the walls of the atria.
_______ increases the loss of sodium by inhibiting the Atrial natriuretic peptide (ANP)
secretion of aldosterone ultimately decreasing blood
volume, therefore, blood pressure as well.
__________ carry blood from capillaries to the heart. Veins and venules
Decreased blood pressure stimulates the kidneys to renin
secrete ________, which initiates the renin-angiotensin-
aldosterone mechanism, raising blood pressure.
Low pressure in the pulmonary capillaries prevents ______ filtration
in the pulmonary capillaries.
Low pressure in the pulmonary capillaries keeps tissue alveoli of the lungs
fluid from accumulating in the _________, which otherwise
result in pulmonary edema.
________ is the deposition of lipids in the walls of the Atherosclerosis
arteries over a period of years.
A drop in the systolic pressure of up to 15 mm Hg is orthostatic hypotension
considered __________.
Normal heart rate is _________ beats per minute. 60 to 100
In ________, the heart rate is often slower, around 50 beats athletic people
per minute.
If there are fewer radial beats than apical beats, a pulse deficit
_________ exists and should be reported to the HCP.
__________ are caused by a narrowed valve opening or a Murmurs
valve that does not close tightly.