NR110 Exam 4 Updated ACTUAL
QUESTIONS AND CORRECT ANSWERS
What are the nodes in electrical conduction - CORRECT ANSWER sinoatrial (SA)
node
Atrioventricular (AV) node
What are the vessels lines with - CORRECT ANSWER smooth endothelial layer
To help create a non turbulent blood flow
What are arteries lined with - CORRECT ANSWER thick elastic walls
To allow for stretching and recoiling
What are arterioles - CORRECT ANSWER smaller branches of arteries
What are capillaries and their importance - CORRECT ANSWER they connect the
arteries and venues
Are only one cell thick
Allow the exchange of nutrients, gases, and waste.
What do the coronary arteries supply blood too - CORRECT ANSWER cardiac muscle
(myocardium)
When do the coronary arteries fill - CORRECT ANSWER during diastole
, How much of the blood O2 is bound to hemoglobin - CORRECT ANSWER 97%
How much of the blood O2 is free - CORRECT ANSWER 3%
What does the autonomic nervous system control? - CORRECT ANSWER the HR and
side of the blood vessels
What does the autonomic nervous system consist of - CORRECT
ANSWER sympathetic nervous system
Parasympathetic nervous system
What happens to the HR with sympathetic stimulation - CORRECT
ANSWER increases the HR
What happens to the HR with the parasympathetic stimulation - CORRECT
ANSWER slows the HR
How do baroreceptors affect cardiac functions - CORRECT ANSWER the pressure put
of by the baroreceptors is interpreted by the brain stem
What are the chemoreceptors and how do they affect cardiac function - CORRECT
ANSWER CO2 and O2
Are interpreted by the brain stem
What does heat do to the circulatory system - CORRECT ANSWER Vasodilation
What does cold do to the circulatory system - CORRECT ANSWER vasoconstriction
QUESTIONS AND CORRECT ANSWERS
What are the nodes in electrical conduction - CORRECT ANSWER sinoatrial (SA)
node
Atrioventricular (AV) node
What are the vessels lines with - CORRECT ANSWER smooth endothelial layer
To help create a non turbulent blood flow
What are arteries lined with - CORRECT ANSWER thick elastic walls
To allow for stretching and recoiling
What are arterioles - CORRECT ANSWER smaller branches of arteries
What are capillaries and their importance - CORRECT ANSWER they connect the
arteries and venues
Are only one cell thick
Allow the exchange of nutrients, gases, and waste.
What do the coronary arteries supply blood too - CORRECT ANSWER cardiac muscle
(myocardium)
When do the coronary arteries fill - CORRECT ANSWER during diastole
, How much of the blood O2 is bound to hemoglobin - CORRECT ANSWER 97%
How much of the blood O2 is free - CORRECT ANSWER 3%
What does the autonomic nervous system control? - CORRECT ANSWER the HR and
side of the blood vessels
What does the autonomic nervous system consist of - CORRECT
ANSWER sympathetic nervous system
Parasympathetic nervous system
What happens to the HR with sympathetic stimulation - CORRECT
ANSWER increases the HR
What happens to the HR with the parasympathetic stimulation - CORRECT
ANSWER slows the HR
How do baroreceptors affect cardiac functions - CORRECT ANSWER the pressure put
of by the baroreceptors is interpreted by the brain stem
What are the chemoreceptors and how do they affect cardiac function - CORRECT
ANSWER CO2 and O2
Are interpreted by the brain stem
What does heat do to the circulatory system - CORRECT ANSWER Vasodilation
What does cold do to the circulatory system - CORRECT ANSWER vasoconstriction
