Human Biology Lab 3, Exercise 3
Questions with Complete Solutions
Beginning with the right atrium, what is the order of the valves through which blood
will pass? (Figure 20-5) - ANSWER-tricuspid valve, pulmonary valve, mitral valve,
aortic valve
The structure that permits blood flow from the right atrium to the left atrium in the
fetal circulation is the - ANSWER-foramen ovale.
Blood leaves the right ventricle by passing through the - ANSWER-pulmonary valve
The atrioventricular valves permit blood flow - ANSWER-in one direction only.
Blood returning to the heart from the systemic circuit first enters the - ANSWER-right
atrium
Blood returning to the heart from the pulmonary circuit first enters the - ANSWER-left
atrium
The earlike extension of the atrium is the - ANSWER-auricle
In the middle of the thoracic cavity is a region occupied by the heart, great vessels,
thymus, esophagus, and trachea called the - ANSWER-mediastinum.
The cusps (leaflets) of atrioventricular valves attach directly to - ANSWER-chordae
tendineae.
The visceral pericardium is the same as the - ANSWER-epicardium
The right ventricle pumps blood to the - ANSWER-right and left lungs
The left ventricle pumps blood to the - ANSWER-aorta
The right atrium receives blood from all of the following structures except the -
ANSWER-pulmonary veins.
Coronary veins empty into the - ANSWER-right atrium
There are ________ pulmonary veins. - ANSWER-4
Blood is supplied to the muscular wall of the left atrium by the - ANSWER-left
coronary artery.
The bicuspid or mitral valve is located - ANSWER-between left atrium and left
ventricle
, The right pulmonary veins carry ________ blood to the ________. - ANSWER-
oxygenated; left atrium
The following is a list of vessels and structures that are associated with the heart.
What is the correct order for the flow of blood entering from the systemic circulation?
1. right atrium
2. left atrium
3. right ventricle
4. left ventricle
5. venae cavae
6. aorta
7. pulmonary trunk
8. pulmonary veins - ANSWER-5, 1, 3, 7, 8, 2, 4, 6
The pulmonary veins carry blood to the - ANSWER-heart
The foramen ovale in the fetal heart is located in the - ANSWER-interatrial septum.
The first blood vessels to branch from the aorta are the ________ arteries. -
ANSWER-coronary
The superior portion of the heart where major blood vessels enter and exit is the -
ANSWER-base.
The inferior point of the heart is called the - ANSWER-apex
The ________ is shared by the two ventricles. - ANSWER-interventricular septum
Muscular ridges on the inner surface of the ventricles are called - ANSWER-
trabeculae carneae.
The ________ carry blood toward the heart. - ANSWER-veins
Oxygen is added to blood as it flows through the ________ circuit. - ANSWER-
pulmonary
The ________ is a remnant of an important fetal blood vessel that once linked the
pulmonary and systemic circuits. - ANSWER-ligamentum arteriosum
The endocardium consists of this type of tissue. - ANSWER-simple squamous
epithelium
Thick projections of muscle in the ventricles that anchor chordae tendineae are
called - ANSWER-papillary muscles.
Which of the following is not true regarding the right atrioventricular valve?
-It is also called the tricuspid valve.
-The cusps provide one-way flow of blood.
Questions with Complete Solutions
Beginning with the right atrium, what is the order of the valves through which blood
will pass? (Figure 20-5) - ANSWER-tricuspid valve, pulmonary valve, mitral valve,
aortic valve
The structure that permits blood flow from the right atrium to the left atrium in the
fetal circulation is the - ANSWER-foramen ovale.
Blood leaves the right ventricle by passing through the - ANSWER-pulmonary valve
The atrioventricular valves permit blood flow - ANSWER-in one direction only.
Blood returning to the heart from the systemic circuit first enters the - ANSWER-right
atrium
Blood returning to the heart from the pulmonary circuit first enters the - ANSWER-left
atrium
The earlike extension of the atrium is the - ANSWER-auricle
In the middle of the thoracic cavity is a region occupied by the heart, great vessels,
thymus, esophagus, and trachea called the - ANSWER-mediastinum.
The cusps (leaflets) of atrioventricular valves attach directly to - ANSWER-chordae
tendineae.
The visceral pericardium is the same as the - ANSWER-epicardium
The right ventricle pumps blood to the - ANSWER-right and left lungs
The left ventricle pumps blood to the - ANSWER-aorta
The right atrium receives blood from all of the following structures except the -
ANSWER-pulmonary veins.
Coronary veins empty into the - ANSWER-right atrium
There are ________ pulmonary veins. - ANSWER-4
Blood is supplied to the muscular wall of the left atrium by the - ANSWER-left
coronary artery.
The bicuspid or mitral valve is located - ANSWER-between left atrium and left
ventricle
, The right pulmonary veins carry ________ blood to the ________. - ANSWER-
oxygenated; left atrium
The following is a list of vessels and structures that are associated with the heart.
What is the correct order for the flow of blood entering from the systemic circulation?
1. right atrium
2. left atrium
3. right ventricle
4. left ventricle
5. venae cavae
6. aorta
7. pulmonary trunk
8. pulmonary veins - ANSWER-5, 1, 3, 7, 8, 2, 4, 6
The pulmonary veins carry blood to the - ANSWER-heart
The foramen ovale in the fetal heart is located in the - ANSWER-interatrial septum.
The first blood vessels to branch from the aorta are the ________ arteries. -
ANSWER-coronary
The superior portion of the heart where major blood vessels enter and exit is the -
ANSWER-base.
The inferior point of the heart is called the - ANSWER-apex
The ________ is shared by the two ventricles. - ANSWER-interventricular septum
Muscular ridges on the inner surface of the ventricles are called - ANSWER-
trabeculae carneae.
The ________ carry blood toward the heart. - ANSWER-veins
Oxygen is added to blood as it flows through the ________ circuit. - ANSWER-
pulmonary
The ________ is a remnant of an important fetal blood vessel that once linked the
pulmonary and systemic circuits. - ANSWER-ligamentum arteriosum
The endocardium consists of this type of tissue. - ANSWER-simple squamous
epithelium
Thick projections of muscle in the ventricles that anchor chordae tendineae are
called - ANSWER-papillary muscles.
Which of the following is not true regarding the right atrioventricular valve?
-It is also called the tricuspid valve.
-The cusps provide one-way flow of blood.
