WorksheetsWeek 4_CVS part 2
Total questions: 15
Worksheet time: 8mins
Which of the following set of circumstances would increase the heart rate?
Sympathetic activation, physical inactivity and fear
Adrenaline release, physical activity and fall in blood pressure
Parasympathetic stimulation, fall in blood pressure and thyroxine release
Rise in blood pressure, adrenaline release and physical activity
Which of the following statements is true?
The vagus nerve supplying the heart carries both sympathetic and parasympathetic fibres
The sympathetic supply to the heart increases both the rate and the force of the heartbeat
The sinoatrial node is supplied only by sympathetic nerve fibres
The heart rate slows during parasympathetic activity because of the release of noradrenaline.
Parasympathetic nerves supplying the heart release: ____.
acetylcholine
noradrenaline
adrenaline
acetylcholine and noradrenaline
The right atrioventricular valve is also called the: ____.
bicuspid
tricuspid
mitral
aortic
How is the heart muscle supplied with oxygen and nutrients?
From the blood flowing through the heart chambers
By the coronary arteries, which branch from the aorta
By the pulmonary arteries, which also supply the lungs
From the cardiac arteries, which are more extensive on the left side of the heart than on the right.
Increased blood pressure means______________________
Increased heart rate
Increased stroke volume
Generalised vasoconstriction
All of the above
Cardiac output is determined by: ____.
the return of the blood to the heart and the heart rate
the strength of contraction of the left ventricle
the stroke volume and heart rate
the systolic discharge and stroke volume
Which artery in the arm is used to measure blood pressure?
Brachial
Radial
Ulnar
Axillary
Blood pressure is usually expressed as: ____.
diastolic pressure over systolic pressure
pulse pressure over diastolic pressure
systolic pressure over diastolic pressure
diastolic pressure over pulse pressure
Which of the following events can be measured as systolic blood pressure?
Atrial contraction
Ventricular contraction
Pulse pressure
Cardiac diastole
What are the two main factors that determine blood pressure?
Cardiac output and peripheral resistance
Peripheral resistance and blood volume
Blood volume and pulse pressure
Pulse pressure and cardiac output
Where do the coronary arteries arise?
The aortic arch
The ascending aorta
The descending aorta
The aortic valve
Right sided heart failure is also termed as __________
Pulmonary hypertension
Congestive cardiac failure
All of the above
None of the above
Pulmonary hypertension
Congestive cardiac failure
All of the above
None of the above
Which is the most important artery in the supply to the circulus arteriosus (circle of
Willis)?
The internal carotid
The external carotid
The anterior cerebral
The anterior communicating
Where in the brain is the cardiovascular centre, for regulating heart rate, located?
In the cerebral cortex
In the hypothalamus
In the medulla oblongata
In the cerebellum
