138 Questions
Which type of muscles are found in the walls of blood vessels in the cardiovascular system?
Smooth muscles
What is the function of the heart in the cardiovascular system?
Pump blood
Which system in the cardiovascular system contains lymph?
Lymphatic system
What is the function of the capillaries in the cardiovascular system?
Exchange nutrients and waste with tissues
How many circuits are there in the blood vascular systems?
2 circuits
Which circuit of the blood vascular systems is responsible for oxygenating the blood?
Pulmonary circuit
What is the function of arteries in the cardiovascular system?
Supply blood to the rest of the body
Why are major arteries situated according to their function in the cardiovascular system?
To avoid damage
Which type of capillaries surround blood capillaries and drain excess fluid in the cardiovascular system?
Lymphatic capillaries
Do the pulmonary and systemic circuits work in parallel or in series in the cardiovascular system?
Series
Which of the following is NOT a pathway for drainage of blood towards the heart?
Arteries
What is the purpose of the pericardial fluid?
To lubricate the heart
Which chamber of the heart receives deoxygenated blood from the superior vena cava, inferior vena cava, and coronary sinus?
Right atrium
What is the function of the myocardium?
To generate force to pump blood
Which layer of the heart wall is composed of simple squamous epithelium and forms a barrier between blood and the vascular wall of the cardiovascular system?
Endocardium
Why do arteries and veins have different physiological structures?
Due to the difference in pressure of blood
What is the purpose of the exchange network of capillaries?
To exchange nutrients, dissolved gases, and waste between blood and surrounding interstitial fluid
What is the purpose of the lymphatics in the cardiovascular system?
To drain excess fluid that has escaped the blood vascular system
Why does the left ventricle have thicker walls compared to the right ventricle?
To push blood around the systemic circuit
What is the purpose of the fibrous pericardium?
To provide strength and protection to the heart
Which of the following is the most accurate statement about the orientation of the heart in the thoracic cavity?
The heart is tilted posteriorly and the apex pushes against the anterior chest wall.
Which of the following is NOT a function of the pericardium in the cardiovascular system?
To support the endothelial cells.
Which of the following is the most accurate statement about the layers of the heart wall in the cardiovascular system?
The endocardium is the innermost layer and is composed of simple squamous epithelium.
Which of the following is the most accurate statement about the chambers of the heart in the cardiovascular system?
The left ventricle needs to generate large force to push blood through the systemic circuit.
Which of the following is the most accurate statement about the fibrous pericardium in the cardiovascular system?
The fibrous pericardium is the outermost layer of the pericardium and surrounds the serous pericardium.
True or false: The cardiovascular system is made up of a series of organs.
True
True or false: Epithelial cells form barriers between blood and the walls of the vascular system.
True
True or false: Muscle tissue in the cardiovascular system consists of only cardiac muscles in the heart.
False
True or false: The heart functions as a pump in the cardiovascular system.
True
True or false: Arteries transport blood away from the heart.
True
True or false: The lymphatic system is a one-way drainage system that later reunites with the blood vascular system.
True
True or false: The pulmonary and systemic circuits work in parallel in the cardiovascular system.
False
True or false: Major arteries are situated according to their function to avoid damage.
True
True or false: Capillaries in the cardiovascular system exchange nutrients and waste with tissues.
True
True or false: The blood vascular system is a closed supply and drainage system containing blood.
True
True or false: Arteries change their name at each major branch.
True
True or false: The cross-sectional area of veins is at least twice as wide as arteries.
True
True or false: The orientation of the heart in the thoracic cavity is rotated to the right.
False
True or false: The right atrium receives oxygenated blood from the pulmonary arteries.
False
True or false: The epicardium is the innermost layer of the heart wall.
False
True or false: The left ventricle has thicker walls than the right ventricle.
True
True or false: The fibrous pericardium is the outermost layer of the pericardium.
True
True or false: The lymphatics in the cardiovascular system prevent blood capillaries from swelling up.
True
True or false: The exchange network in the cardiovascular system consists of only continuous capillaries.
False
True or false: The superficial veins in the cardiovascular system are located deep in position.
False
True or false: Arteries change their name at each major branch.
True
True or false: The cardiovascular system is made up of connective tissues and cells such as epithelial and muscle cells?
True
True or false: Epithelial cells in the cardiovascular system form barriers between blood and the walls of the vascular system to prevent coagulating and clotting of blood inside blood vessels?
True
True or false: Muscle tissue in the cardiovascular system consists of only cardiac muscles in the heart and smooth muscles in the blood vessel walls?
True
True or false: The major arteries in the cardiovascular system are situated according to their function to avoid damage?
True
Arteries change their name at each major ______
branch
Exchange network = ______
capillaries
Capillaries present with varying degrees of permeability (leakiness) for exchange of nutrients, dissolved gases and wastes between blood and surrounding ______ fluid
interstitial
Arteries and veins have different physiological structures due to the difference in ______ of blood
pressure
To compensate for the difference in pressure, cross-sectional area of veins is at least __________ as wide of arteries to shift the same volume of blood per time.
twice
The heart is located in the thoracic cavity, flanked laterally by the left and right pleural cavities, anterior portion of the ___________.
mediastinum
The right atrium receives deO2 blood from superior vena cava, inferior vena cava, ______ sinus
coronary
Endocardium is the innermost ______ of the heart wall
layer
Both ventricles pump the same volume of blood per second but at different ______
pressure
The pericardium is a closed ______ membrane
serous
Epithelia form barriers between ______ and the walls of the vascular system to prevent coagulating and clotting of blood inside blood vessels.
blood
Muscle consists of cardiac muscles (only in ______) and smooth muscles (in the blood vessel walls)
heart
Heart - ______
pump
Supply - ______
arteries
Veins/lymphatics - ______
drainage
Capillaries - ______ with tissues (+ nutrients, - waste)
exchange
Blood vascular system - closed supply and drainage system containing ______
blood
Lymphatic (vascular) system - open-entry drainage system containing ______
lymph
Pulmonary and systemic circuit work in ______ not parallel.
series
Which of the following is NOT a function of the pericardium in the cardiovascular system?
To generate force to pump blood
To compensate for the difference in pressure, the cross-sectional area of veins is at least ______ as wide as arteries to shift the same volume of blood per time.
2
Which of the following is the correct statement about the lymphatic system in the cardiovascular system?
The lymphatic system is an open-entry drainage system containing lymph.
Which of the following is the correct statement about the pulmonary circuit in the cardiovascular system?
The pulmonary circuit consists of the right heart and is responsible for oxygenating blood at gas exchange surfaces in the lungs.
Which of the following is the correct statement about the systemic circuit in the cardiovascular system?
The systemic circuit consists of the left heart and is responsible for oxygenating blood at gas exchange surfaces of the rest of the body.
Which of the following is the correct statement about the supply side in the cardiovascular system?
The supply side consists of arteries and is responsible for supply.
Which of the following is the correct statement about the major arteries in the cardiovascular system?
Major arteries are situated according to their function to avoid damage.
Which of the following is the correct statement about the capillaries in the cardiovascular system?
Capillaries present with varying degrees of permeability for exchange of nutrients, dissolved gases, and wastes between blood and surrounding tissue.
Which of the following is the correct statement about the orientation of the heart in the thoracic cavity?
The heart is located in the thoracic cavity, flanked laterally by the left and right pleural cavities, anterior portion of the lungs.
What is the role of autonomic nerves in the coordination of heart contraction and atrioventricular valve action?
They alter the rate of conduction impulse generation
What is the function of conduction cells in the heart?
They are involved in electrical conduction
Which vessels supply oxygenated blood directly to the myocardium?
Coronary arteries
Where does the right coronary artery run along in the heart?
The groove between the right atrium and ventricle
Which artery supplies the anterior surface of the heart and the intraventricular septum?
Anterior interventricular artery
Which veins drain areas supplied by the right coronary artery?
Small cardiac vein
Which veins drain areas supplied by the anterior interventricular artery and circumflex artery?
Great cardiac vein
Where does the coronary sinus drain deoxygenated blood into?
Right atrium
Which part of the heart contains more myocardium?
Ventricles
What is the role of sympathetic tone in heart rate?
It increases heart rate
Which of the following is the correct statement about the function of the atrioventricular valves in the cardiovascular system?
They prevent blood from returning to the atria during ventricular contraction.
Which of the following is the correct statement about the main function of the semilunar valves in the cardiovascular system?
They prevent blood from returning to the ventricles during diastole.
Which of the following is the correct statement about the papillary muscles in the cardiovascular system?
They contract during systole to hold the cusps of the valves and control their closing.
Which of the following is the correct statement about the chordae tendineae in the cardiovascular system?
During systole, they are tense and prevent the cusps of the valves from swinging into the atria.
Which of the following is the correct statement about cardiac muscle in the cardiovascular system?
It is exclusively located in the heart and does not exist in any other part of the body.
Which of the following is the correct statement about gap junctions (intercalated disks) in the cardiovascular system?
They allow for electrochemical communication via cytoplasmic contact.
Which of the following is the correct statement about the conduction system of the heart in the cardiovascular system?
It greatly increases the efficiency of the heart pumping.
Which of the following is the correct statement about the function of the capillaries in the cardiovascular system?
They allow for the exchange of nutrients and waste products between the blood and tissues.
Which of the following is the correct statement about the lymphatics in the cardiovascular system?
They prevent blood capillaries from swelling up.
Which of the following is the correct statement about the layers of the heart wall in the cardiovascular system?
The myocardium is the middle layer and consists of cardiac muscle.
True or false: Autonomic nerves alter the rate of heart contraction and atrioventricular valve action.
True
True or false: Parasympathetic tone increases heart rate.
False
True or false: Conduction pathways in the heart are made of nervous tissue.
False
True or false: Conduction cells in the heart are involved with electrical conduction.
True
True or false: The left coronary artery supplies the right atrium and ventricle.
False
True or false: The great cardiac vein drains deoxygenated blood into the coronary sinus.
True
True or false: The myocardium contains more myocardium in the ventricles than in the atria.
True
True or false: The left coronary artery branches into another artery which circumflexes around the left lateral margin of the heart.
True
True or false: The small cardiac vein drains areas supplied by the left coronary artery.
False
True or false: The coronary sinus opens into the left atrium.
False
True or false: There are 4 valves in the heart, 2 semilunar valves, and 2 atrioventricular valves?
True
True or false: The atrioventricular valves prevent blood from returning to the atria during ventricular contraction?
True
True or false: The tricuspid valve is the right atrioventricular valve?
True
True or false: The mitral valve is the left atrioventricular valve?
True
True or false: The semilunar valves prevent blood from returning to the ventricles during filling?
True
True or false: The pulmonary valve is the right semilunar valve?
True
True or false: The aortic valve is the left semilunar valve?
True
True or false: The papillary muscles are one of the first parts of the ventricle to contract during systole?
True
True or false: The chordae tendineae tense during systole to control the closing of the valves?
True
True or false: Cardiac muscle cells heavily rely on oxygen-dependent aerobic metabolism for contraction?
True
During diastole, the AV valves ______ and blood flows from atria into ventricles
open
During systole, the AV valves are 'pushed' shut by the raised pressure in the ventricle and blood flows ______ of the heart.
out
The function of the semilunar valves is to prevent blood from ______ to the ventricles during filling (diastole)
returning
The right semilunar valve is also known as the ______ valve
pulmonary
The left semilunar valve is also known as the ______ valve
aortic
The papillary muscles tense the pretension cables to hold the cusps and control the closing of the valves when the pressure ______ in the ventricles
increases
The chordae tendineae are strong tendinous strands that become ______ during diastole
loose
Cardiac muscle displays features of both smooth and skeletal muscle as well as cardiac muscle ______
specialisations
The cells of cardiac muscle are interconnected with neighboring cells via ______ disks
intercalated
The conduction system of the heart greatly increases the efficiency of the heart ______
pumping
Conduction cells are involved with electrical ______
conduction
The myocardium is present in the ______ and ventricles
atria
Oxygenated blood is directly supplied to the myocardium from the ascending ______ via the left and right coronary arteries
aorta
The right coronary artery supplies the right ______ and ventricle
atrium
The left coronary artery supplies the ________ surface of the heart AND the groove between left atrium and left ventricle
anterior
The great cardiac vein drains areas that were supplied by anterior ______ artery and circumflex artery
interventricular
Both small cardiac vein and great cardiac vein drain ______ blood into the coronary sinus
deoxygenated
Conduction cells have many ______ and large store of glycogen
mitochondria
The left coronary artery runs over the intraventricular ______
septum
Sympathetic tone increases when excited - heart beats ______
faster
Study Notes
Cardiovascular System
- Smooth muscles are found in the walls of blood vessels in the cardiovascular system
- The heart's function in the cardiovascular system is to pump blood throughout the body
- The lymphatic system contains lymph in the cardiovascular system
- Capillaries exchange nutrients, dissolved gases, and wastes with tissues in the cardiovascular system
- There are two circuits in the blood vascular system: pulmonary and systemic
- The pulmonary circuit oxygenates the blood in the cardiovascular system
Heart Structure
- The right atrium receives deoxygenated blood from the superior vena cava, inferior vena cava, and coronary sinus
- The function of the myocardium is to contract and pump blood throughout the body
- The epicardium is the outermost layer of the heart wall, composed of simple squamous epithelium
- Arteries and veins have different physiological structures due to differences in blood pressure
- The purpose of the pericardial fluid is to reduce friction between the heart and surrounding tissues
Blood Vessels
- Arteries transport blood away from the heart in the cardiovascular system
- The exchange network of capillaries allows for the exchange of nutrients, dissolved gases, and wastes with tissues
- Lymphatics in the cardiovascular system provide a one-way drainage system that reunites with the blood vascular system
- The pulmonary and systemic circuits work in series in the cardiovascular system
- Major arteries are situated according to their function to avoid damage
- Capillaries surround blood capillaries and drain excess fluid in the cardiovascular system
Heart Function
- The heart functions as a pump in the cardiovascular system
- The left ventricle has thicker walls compared to the right ventricle due to the higher pressure required to pump blood to the entire body
- The fibrous pericardium is the outermost layer of the pericardium, providing protection and support to the heart
- The cardiovascular system is made up of connective tissues and cells such as epithelial and muscle cells
- Epithelial cells form barriers between blood and the walls of the vascular system to prevent coagulating and clotting of blood inside blood vessels
Test your knowledge of the cardiovascular system and its components, including organs, connective tissues, epithelial and muscle cells. Learn about the important role of epithelia in preventing coagulation and clotting of blood, as well as the presence of cardiac and smooth muscles in the heart and blood vessel walls.
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