Physiology Cardiology, -MOCK TEST #8 CCI RCS Exam With 100% Correct Answers 2023
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Course
CCI RCS
Institution
CCI RCS
Physiology Cardiology, -MOCK TEST #8 CCI RCS Exam With 100% Correct Answers 2023
SA node
pacemaker of the heart
Capillaries
Microscopic vessel through which exchanges take place between the blood and cells of the body
stressed volume
Blood volume contained in arteries
Cardi...
Physiology Cardiology, -MOCK TEST #8 CCI RCS Exam With 100% Correct Answers 2023
SA node - Correct Answer-pacemaker of the heart
Capillaries - Correct Answer-Microscopic vessel through which exchanges take place between the blood and cells of the body
stressed volume - Correct Answer-Blood volume contained in arteries
Cardiac Output (CO) - Correct Answer-measurement of the amount of blood ejected per
minute from either ventricle of the heart
Venous Return (VR) - Correct Answer-the amount of blood returned back to the heart
Arterioles - Correct Answer-small arteries, extensive smooth muscle, area of high resistances to blood flow, innervated by sympathetic adrenergic nerve fibers
Veins - Correct Answer-Thin-walled blood vessels that are less elastic than arteries; veins contain cup-like valves that keep blood flowing in one direction to the heart and prevent blood from flowing backward, have large captaincy.
unstressed volume - Correct Answer-The volume of blood contained in the veins
diastolic pressure - Correct Answer-occurs when the ventricles are relaxed; the lowest pressure against the walls of an artery
systolic blood pressure - Correct Answer-the pressure created in the arteries when the left ventricle contracts and forces blood out into circulation
Diacritic notch - Correct Answer-"blip" In arterial pressure curve- when aortic valve closes and produces retrograde flow from aorta toward valve briefly decreasing aortic pressure below systolic value
pulse pressure - Correct Answer-difference between systolic and diastolic pressure
Stroke Volume (SV) - Correct Answer-measurement of the amount of blood ejected from a ventricle in one contraction
Mean Arterial Pressure (MAP) - Correct Answer-pressure forcing blood into tissues, averaged over cardiac cycle What must the mean arterial pressure (MAP) be to maintain adequate perfusion to the brain ? - Correct Answer-Needs to exceed 70
What determines blood flow to tissues? - Correct Answer-Blood flow to tissues is dependent on tissue needs and is mainly controlled by local factors such as prostaglandins, NO, & Histamines.
laminar blood flow - Correct Answer-type of blood flow not resulting in audible sound; defined by streamline flow or flow in parallel layers without turbulence
turbulent blood flow - Correct Answer-type of blood flow resulting in audible sound; defined by chaotic flow due to variations of pressure and velocity
What is the audible sound called in relation to turbulent flow ? - Correct Answer-A murmur or bruit
What are possible causes of murmurs? - Correct Answer-Valvular disease such as stenosis of the valves or regurgitation of the valves
What is the most important factor in vessel flow? - Correct Answer-Radius of the vessel.
Right sided heart failure would most likely lead to what physiological finding - Correct Answer-Peripheral Edema
Total Peripheral Resistance (TPR) - Correct Answer-the resistance to the flow of blood through the entire systemic circulation
If TPR is decreased, what will happen to venous return ? - Correct Answer-Venous return will increase/Preload is increased
If TPR is increased what will happen to venous return? - Correct Answer-Venous return will decrease but afterload will increase
Afterload - Correct Answer-the amount of resistance to ejection of blood from the ventricle
A patient presents with an increased heart rate what is one of the first things that can be
done to help slow the patient's HR. - Correct Answer-Vagal maneuvers- By bearing down or having the patient blow through a straw the patient stimulates the vagus nerve which intern stimulate parasympathetic responses to lower the HR.
Patient has known renal insufficiency due to renal artery blockage. What is the pathophysiology behind his hypertension? - Correct Answer-Decreased perfusion to the
kidneys causes release of renin by the kidneys renin is then converted to angiotensin and angiotensin II which further causes aldosterone release and sodium water
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