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Anatomy And Physiology Quiz: The Cardiovascular System quiz 7

Anatomy And Physiology Quiz: The Cardiovascular System quiz 7

Anatomy And Physiology Quiz: The Cardiovascular System

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This vessel distributes oxygenated blood to the myocardium.

Coronary artery
Coronary vein
Right ventricle
Left auricle

Cardiac muscle fibres electrically connect to neighbouring fibres by

Desmosomes
Intermediate discs
Gap junctions
Contractile fibers
Chords of tendons

Which of the following contains the largest amount of mitochondria?

Smooth muscle
Skeletal muscle
Cardiac muscle
Hepatocytes
Leukocytes

This is a network of specialised cardiac muscle fibres that provide a path for each cycle of cardiac excitation to progress through the heart.

Pacemaker
Sinoatrial node
Purkinje fibers
Bundle of His
Conduction system

By comparison, cardiac muscle cells have contraction plateau time than skeletal muscle cells.

A shorter
A longer
No difference in

This is the volume of blood ejected from the left ventricle into the aorta each minute.

Cardiac output
Cardiac input
Stroke volume
Heart rate

This term refers to the period of time during a cardiac cycle when contraction occurs and blood pressure rises.

Filling
Systole
Repolarization
Diastole
Fibrillation

Which of these periods represents greatest cardiac output?

Atrial diastole
Ventricular diastole
Atrial systole
Ventricular systole
Septal systole

The second heart sound represents which of the below events?

Valvular stenosis
Semilunar valves opening
Atrioventricular valves closing
Semilunar valves closing
Atrioventricular valves opening

This part of the heart can initiate a contraction and can set a constant heart rate of about 100 beats per minute.

Cardiac accelerator nerves
Chemoreceptors
Cardiovascular centre
Sinoatrial node
Proprioceptors
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