NUR 426 EXAM NEWEST 2024-2025 COMPLETE QUESTIONS AND CO
RECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
Study online at https://quizlet.com/_fpdxfs
Oxygen converted to adenosine triphos-
Define oxygens role in circulation. phate (ATP) for cellular energy = aerobic
metabolism
What is insufficient oxygen supply? Hypoxia
1. pulmonary gas exchange - resp sys-
What are the 3 components of oxygena- tem
tion? 2. oxygen delivery - cardio system
3. oxygen consumption - metabolism
decreased oxygen supply leading to cell
define ischemia.
death
necrotic tissue due to prolonged is-
define infarct.
chemia
1. pulmonary circuit
What are the two vascular systems?
2. systemic circuit
What type of blood does each circuit car- 1. pulmonary - oxygenated blood
ry? 2. systemic - deoxygenated blood
Carry blood away from the heart:
- oxygenated blood to systemic circula-
tion
Define arteries.
- deoxygenated blood to pulmonary cir-
cuit
- no valves
Carry blood back to the heart:
- deoxygenated from systemic circulation
Define veins. - oxygenated from pulmonary circulation
- valves
- prone to thrombosis
smallest blood vessels that filter nutrients
Define capillaries. and wastes between blood and body tis-
sues through diffusion
- Pulmonary circulation supplied by the R
side of the heart.
What is the path of cardiopulmonary cir-
- Systemic circulation supplied by the L
culation?
side of the heart.
- Arteries carry blood away from the
1/5
, NUR 426 EXAM NEWEST 2024-2025 COMPLETE QUESTIONS AND CO
RECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED
Study online at https://quizlet.com/_fpdxfs
heart.
- Veins carry blood back to the heart
Because the veins in this circuit do not
Why is pulmonary circulation prone to have valves and are prone to receiving
congestion? back flow of blood from the heart due to
congestion.
What are the two most important arteries
Carotid and femoral artery
specific to central circulation?
What are the 3 components of the heart epicardium (or pericardium), myocardi-
wall? um, endocardium
1. Atrioventricular
What are the two valves of the heart?
2. Semilunar
What valves separate the atria from the
ATM - Atrioventricular, Tricuspid, Mitral
ventricle?
What valves separate the ventricles from
SAP - Semilunar, Aortic, Pulmonary
the great vessel trunks?
- Blood enters the heart thru the atria
- Atria fill with blood before pressure
- blood empties into ventricles before the
pressures of the chambers equalize
Explain the Cardiac cycle of blood flow.
- atria contract and push more blood into
ventricles aka atrial kick
- ventricles contract and push blood out
of the heart
systole (contraction/pressurization) and
systole vs diastole
diastole (relaxation/de-pressurization)
What is the "widow maker"? A blockage of the L main coronary artery
Define cardiac output (CO) CO = HR x SV
The volume of blood ejected from the
Define Stroke Volume (SV)
heart with each contraction
SNS - flight or flight = increased HR, and
vasoconstriction
What is the SNS and PNS's role in CO?
PNS - rest and digest = decreased HR,
and vasodilation
2/5
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