Trivia: The Cardiovascular System Quiz!

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Trivia: The Cardiovascular System Quiz! - Quiz

Do you suppose you know enough about the cardiovascular system? The cardiovascular system is comprised of the heart and the circulatory system. The heart, which is a muscular organ, pumps blood and nutrients into the body. The structures of the cardiovascular system include the heart, blood vessels, and blood. The lymphatic system is strongly associated with the cardiovascular system. If you are studying for an exam, this quiz will get the juices flowing.

Questions and Answers

1.

Cardiac muscle cells are connected to adjacent cardiac muscle cells by junctions called __________.

Correct Answer
intercalated discs
intercalated disks
2.

Cardiac muscle fibers are interconnected in branching networks that spread in all directions of the heart to form a ______ which is a mass of merging cardiac muscle cells.

Correct Answer
functional syncytium
3.

The heart contains two functional syncytia. They are the _________ which is located in the atrial walls and the _______ which is located in the ventricular walls. If any part of the syncytium is stimulated, the whole structure contracts as a unit.

Correct Answer
atrial syncytium, ventricular syncytium
4.

Except for a small region in the floor of the _______, the atrial syncytium is separated from the ventricular syncytium by the _______________.

Correct Answer
right atrium, fibrous skeleton
right atrium, skeleton of the heart
5.

The _________ is a network of specialized cardiac muscle cells that initiates and distributes electrical impulses.

Correct Answer
conduction system of the heart
cardiac conduction system
6.

Most of the specialized cardiac muscle cells involved in the cardiac conduction system are smaller than the _________ of the myocardium and contain fewer ________. Instead of contracting they initiate and distribute the _____________.

Correct Answer
contractile cells, myofibrils, cardiac impulses
7.

The conduction system of the heart includes the _____ which is a small mass of specialized cardiac muscle cells situated on the posterior wall of the right atrium just below the opening of the superior vena cava beneath the epicardium.
- A.
  
  A-V node
- B.
  
  Pacemaker
- C.
  
  S-A node
- D.
  
  Atrial synctium
Correct Answer
C. S-A node
8.

The fibers of the S-A node are continuous with those of the __________.

Correct Answer
atrial syncytium
9.

The S-A node is referred to as the _________ of the heart.

Correct Answer
pacemaker
10.

The S-A node contains pacemaker cells which establish the __________. It is responsible for the ________ of the heart.

Correct Answer
heart rate, rhythmic contractions
11.

The S-A node initiates one impulse after another _____ times per minute
- A.
  
  50-60
- B.
  
  60-70
- C.
  
  70-80
- D.
  
  80-90
- E.
  
  90-100
Correct Answer
C. 70-80
12.

As the cardiac impulse travels from the S-A node into the __________, the atria _______ almost simultaneously.

Correct Answer
atrial syncytium, contract
13.

_________ are fibers that are interspersed amongst the atrial muscle fibers that conduct the impulses to the A-V node.
- A.
  
  Purkinje fibers
- B.
  
  Myofibrils
- C.
  
  Contractile fibers
- D.
  
  Junctional fibers
- E.
  
  S-A fibers
Correct Answer
D. Junctional fibers
14.

Junctional fibers have very _____ diameters that cause the impulses they carry to be ________.

Correct Answer
small, delayed
15.

The _______ is a mass of specialized cardiac muscle cells located in the lower right atrium near the entrance of the coronary sinus.
- A.
  
  S-A node
- B.
  
  Auricle
- C.
  
  A-V node
- D.
  
  Bundle branches
- E.
  
  Myofibril
Correct Answer
C. A-V node
16.

The A-V node provides the only normal _____________ between the atrial and ventricular syncytia.

Correct Answer
conduction pathway
17.

The ____________ does not conduct impulses and thus isolates the atrial myocardium from the ventricular myocardium.

Correct Answer
fibrous skeleton
18.

The cells composing the A-V node are ______ efficient in conducting an impulse which causes a short delay in the transmission of the impulse to the_________.

Correct Answer
less, ventricles
19.

What is the importance of the A-V node?
- A.
  
  It permits the ventricles to complete their contraction and empty their blood into the pulmonary trunk and aorta
- B.
  
  It helps to close the A-V valves
- C.
  
  It has no real significance
- D.
  
  It permits the atria to complete their contraction and empty their blood into the ventricles before they contract
- E.
  
  It conducts electrical impulses to the purkinje fibers
Correct Answer
D. It permits the atria to complete their contraction and empty their blood into the ventricles before they contract
20.

Once the cardiac impulse reaches the distal end of the A-V node, it passes into a group of large fibers that make up the __________. This bundle is located in the superior portion of the ____________ where impulses travel __________.

Correct Answer
A-V bundle, interventricular septum, rapidly
21.

The A-V bundle persists only briefly before dividing into the _____ and ______ bundle branches. These branches extend toward the _____ of the heart in the _________.

Correct Answer
left, right, apex, interventricular septum
22.

The bundle branches conduct the cardiac impulse to the ___________.

Correct Answer
purkinje fibers
23.

The purkinje fibers are very _____ fibers, essentially long strands of _____-shaped cells with few ______. They are located in the _________.

Correct Answer
large, barrel, myofibrils, endocardium
24.

Purkinje fibers complete the conduction pathway through the __________, penetrate into the _____ and then travel ____ into the __________. They give off many small paths and become continuous with the _____________.

Correct Answer
interventricular septum, apex, superiorly, ventricular walls, cardiac muscle fibers
25.

Purkinje fibers conduct impulses very _________; as fast as _____________.

Correct Answer
rapidly, small myelinated axons
26.

The ventricular muscle fibers are arranged in patterns of _______. When these fibers are stimulated by the branches of the _______ , the ventricular walls contract with a _______ motion. The end result is that a ______ contraction of the ventricles begins at the _____ and pushes the blood _______ toward the ________. This effectively ejects some blood from the ventricles into the ____ and the _________.

Correct Answer
whorls, purkinje fibers, twisting, wringing, apex, superiorly, semilunar valves, aorta, pulmonary trunk

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Current Version
Mar 21, 2022

Quiz Edited by
ProProfs Editorial Team
Jan 29, 2010

Quiz Created by
Dmclover73

Trivia: The Cardiovascular System Quiz!

Cardiac muscle cells are connected to adjacent cardiac muscle cells by junctions called __________.

Cardiac muscle fibers are interconnected in branching networks that spread in all directions of the heart to form a ______ which is a mass of merging cardiac muscle cells.

The heart contains two functional syncytia. They are the ___ which is located in the atrial walls and the _ which is located in the ventricular walls. If any part of the syncytium is stimulated, the whole structure contracts as a unit.

Except for a small region in the floor of the _, the atrial syncytium is separated from the ventricular syncytium by the _________.

The _________ is a network of specialized cardiac muscle cells that initiates and distributes electrical impulses.

Most of the specialized cardiac muscle cells involved in the cardiac conduction system are smaller than the _ of the myocardium and contain fewer . Instead of contracting they initiate and distribute the _____.

The conduction system of the heart includes the _____ which is a small mass of specialized cardiac muscle cells situated on the posterior wall of the right atrium just below the opening of the superior vena cava beneath the epicardium.

The fibers of the S-A node are continuous with those of the __________.

The S-A node is referred to as the _________ of the heart.

The S-A node contains pacemaker cells which establish the __. It is responsible for the of the heart.

The S-A node initiates one impulse after another _____ times per minute

As the cardiac impulse travels from the S-A node into the ____, the atria _ almost simultaneously.

_________ are fibers that are interspersed amongst the atrial muscle fibers that conduct the impulses to the A-V node.

Junctional fibers have very _ diameters that cause the impulses they carry to be ____.

The _______ is a mass of specialized cardiac muscle cells located in the lower right atrium near the entrance of the coronary sinus.

The A-V node provides the only normal _____________ between the atrial and ventricular syncytia.

The ____________ does not conduct impulses and thus isolates the atrial myocardium from the ventricular myocardium.

The cells composing the A-V node are efficient in conducting an impulse which causes a short delay in the transmission of the impulse to the___.

What is the importance of the A-V node?

Once the cardiac impulse reaches the distal end of the A-V node, it passes into a group of large fibers that make up the . This bundle is located in the superior portion of the where impulses travel .

The A-V bundle persists only briefly before dividing into the _ and bundle branches. These branches extend toward the _ of the heart in the _______.

The bundle branches conduct the cardiac impulse to the ___________.

The purkinje fibers are very ___ fibers, essentially long strands of _-shaped cells with few . They are located in the _____.

Purkinje fibers complete the conduction pathway through the ________, penetrate into the _ and then travel into the . They give off many small paths and become continuous with the _____.

Purkinje fibers conduct impulses very _; as fast as _____.

Trivia: The Cardiovascular System Quiz!

Cardiac muscle cells are connected to adjacent cardiac muscle cells by junctions called __________.

Cardiac muscle fibers are interconnected in branching networks that spread in all directions of the heart to form a ______ which is a mass of merging cardiac muscle cells.

The heart contains two functional syncytia. They are the _________ which is located in the atrial walls and the _______ which is located in the ventricular walls. If any part of the syncytium is stimulated, the whole structure contracts as a unit.

Except for a small region in the floor of the _______, the atrial syncytium is separated from the ventricular syncytium by the _______________.

The _________ is a network of specialized cardiac muscle cells that initiates and distributes electrical impulses.

Most of the specialized cardiac muscle cells involved in the cardiac conduction system are smaller than the _________ of the myocardium and contain fewer ________. Instead of contracting they initiate and distribute the _____________.

The conduction system of the heart includes the _____ which is a small mass of specialized cardiac muscle cells situated on the posterior wall of the right atrium just below the opening of the superior vena cava beneath the epicardium.

The fibers of the S-A node are continuous with those of the __________.

The S-A node is referred to as the _________ of the heart.

The S-A node contains pacemaker cells which establish the __________. It is responsible for the ________ of the heart.

The S-A node initiates one impulse after another _____ times per minute

As the cardiac impulse travels from the S-A node into the __________, the atria _______ almost simultaneously.

_________ are fibers that are interspersed amongst the atrial muscle fibers that conduct the impulses to the A-V node.

Junctional fibers have very _____ diameters that cause the impulses they carry to be ________.

The _______ is a mass of specialized cardiac muscle cells located in the lower right atrium near the entrance of the coronary sinus.

The A-V node provides the only normal _____________ between the atrial and ventricular syncytia.

The ____________ does not conduct impulses and thus isolates the atrial myocardium from the ventricular myocardium.

The cells composing the A-V node are ______ efficient in conducting an impulse which causes a short delay in the transmission of the impulse to the_________.

What is the importance of the A-V node?

Once the cardiac impulse reaches the distal end of the A-V node, it passes into a group of large fibers that make up the __________. This bundle is located in the superior portion of the ____________ where impulses travel __________.

The A-V bundle persists only briefly before dividing into the _____ and ______ bundle branches. These branches extend toward the _____ of the heart in the _________.

The bundle branches conduct the cardiac impulse to the ___________.

The purkinje fibers are very _____ fibers, essentially long strands of _____-shaped cells with few ______. They are located in the _________.

Purkinje fibers complete the conduction pathway through the __________, penetrate into the _____ and then travel ____ into the __________. They give off many small paths and become continuous with the _____________.

Purkinje fibers conduct impulses very _________; as fast as _____________.

The heart contains two functional syncytia. They are the ___ which is located in the atrial walls and the _ which is located in the ventricular walls. If any part of the syncytium is stimulated, the whole structure contracts as a unit.

Except for a small region in the floor of the _, the atrial syncytium is separated from the ventricular syncytium by the _________.

Most of the specialized cardiac muscle cells involved in the cardiac conduction system are smaller than the _ of the myocardium and contain fewer . Instead of contracting they initiate and distribute the _____.

The S-A node contains pacemaker cells which establish the __. It is responsible for the of the heart.

As the cardiac impulse travels from the S-A node into the ____, the atria _ almost simultaneously.

Junctional fibers have very _ diameters that cause the impulses they carry to be ____.

The cells composing the A-V node are efficient in conducting an impulse which causes a short delay in the transmission of the impulse to the___.

Once the cardiac impulse reaches the distal end of the A-V node, it passes into a group of large fibers that make up the . This bundle is located in the superior portion of the where impulses travel .

The A-V bundle persists only briefly before dividing into the _ and bundle branches. These branches extend toward the _ of the heart in the _______.

The purkinje fibers are very ___ fibers, essentially long strands of _-shaped cells with few . They are located in the _____.

Purkinje fibers complete the conduction pathway through the ________, penetrate into the _ and then travel into the . They give off many small paths and become continuous with the _____.

Purkinje fibers conduct impulses very _; as fast as _____.