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NURS 115 Exam 3 Concepts
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NURS 115 Exam 3 Concepts 2024-20253 Functions of the Cardiovascular System
1. Delivery/distribution of O2, nutrients, electrolytes, hormones, and immune
substances
2. Carry waste products to kidneys
5. Regulate Temperature
What is the overall function of the Cardiovascular System?
TRANSPORT
Two types of circulation
1. Central/Pulmonary (in cardiovascular and pulmonary systems)
2. Peripheral/Systemic (in rest of body)
What is another term for Central Circulation?
Pulmonary Circulation
What is another term for Peripheral Circulation?
Systemic Circulation
Which side of the heart does Central/Pulmonary Circulation coincide with?
RIGHT
,Which side of the heart does Peripheral/Systemic Circulation coincide with?
LEFT
Where does blood back up during right side heart failure?
Into the BODY
Where does blood back up during left side heart failure?
Into the LUNGS
Which opening/closure is associated with the S1 heart sound?
Opening/closing of Mitral and Tricuspid valves
Which opening/closure is associated with the S2 heart sound?
Opening/closing of Aortic and Pulmonary valves
What action is associated with S3 heart sound?
Filling of Left Ventricle with blood
What action is associated with S4 heart sound?
"Kick" sound of blood hitting walls of Left Ventricle
,ISCHEMIA
Lack of oxygen to tissue (causing pain)
INFARCTION
Death of tissue (due to prolonged ischemia)
Pericardium
Sac around the heart
Myocardium
Heart muscle
Epicardium
Thin, three layered membrane lining the heart
What are the three layers of a blood vessel (ordered from external to internal)
Tunica Externa
, Tunica Media
Tunica Interna
Hemodynamics
Hemo = blood
Dynamic = relationship between resistance, pressure, and flow
Cardiac cycle is divided into what two parts?
Systole/Diastole
Systole
Pressure during contraction of the heart
Diastole
Pressure during relaxation of the heart
Average pressure during Systole (number)
120
Average pressure during Diastole (number)
80
Define Stroke Volume
Amount of blood pumped with each heart beat
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