Week 2-STUDY FOR FINAL Flashcards
Which part of the heart has the primary function to initiate electrical impulses?
SA Node
an important part of the electrical conduction system of the heart, as it transmits impulses from the atrioventricular node, located at the inferior end of the interatrial septum, to the ventricles of the heart
Bundle of His
cluster of cells in the center of the heart between the atria and ventricles, and acts like a gate that slows the electrical signal before it enters the ventricles.
AV Node
What is Blood Pressure?
Determines peripheral
circulation effectiveness
Elevated BP (sustained over time)
Hypertension
Low BP (related to some pathology)
Hypotension
Causes of hypotension
vasodilatation, heart failure, loss of blood volume
Major risk factors of hypertension
heart disease and stroke
The sudden drop of blood pressure within 3 min. of
standing
Orthostatic Hypotension
Who is at risk for orthostatic hypotension?
elderly, prolonged bed rest, dehydration, blood
loss.
What would increase blood pressure?
.Peripheral Resistance
What would decrease blood pressure?
Analgesics
What would increase pulse rate?
Hemmorhage