Biology
Circulation
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#9 Which region of the mammalian heart receives impulses directly from the sympathetic nervous system
A) AVN
B) SAN
C) Bundle of His
D) Purkinji tissue
#10 Normal rate of the heart beat in a healthy human being is
A) 72 beats /minute
B) 80 beats /minute
C) 100 beats /minute
D) 120 beats /minute
#11 One complete cardiac cycle takes about
A) 0.1 seconds
B) 0.3 seconds
C) 0.8 seconds
D) 1 minute
#12 The continuous working of heart is due to SAN, AVN and
A) Auricles
B) Ventricles
C) Purkinji fibres
D) Nerves
#13 The medical device used for recording the electric activity of the heart is called
A) Pace maker
B) ECG
C) Sphygmomanometer
D) Stent
#14 Vessels carrying blood away from heart are called
A) Veins
B) Arteries
C) Capillaries
D) Portal Vein
#15 Flow of blood in capaillaries is adjusted by
A) Heart beat
B) SAN
C) AVN
D) Pre-capillary sphincter
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