Portage Learning BIOL 252 Human Anatomy & Physiology II
Module 2 Exam Review | 92 Practice Questions with
Answers & Rationales | Cardiovascular System: The Heart |
LockDown Browser Ready | 2026
Part 1: Heart Anatomy & Wall Layers (Questions 1-15)
1. Which layer of the heart wall is synonymous with the visceral layer of
the serous pericardium?
A) Endocardium
B) Myocardium
C) Epicardium
D) Fibrous pericardium
The epicardium is the outermost layer of the heart wall and is identical to the
visceral layer of the serous pericardium .
2. What type of epithelium forms the endocardium?
A) Simple cuboidal epithelium
B) Simple squamous epithelium
C) Stratified squamous epithelium
D) Pseudostratified columnar epithelium
The endocardium is lined by simple squamous epithelium (endothelium), which
minimizes friction as blood flows through the heart chambers .
3. Which chamber of the heart has the thickest myocardium?
,A) Right atrium
B) Left atrium
C) Right ventricle
D) Left ventricle
The left ventricle has the thickest myocardium because it must generate
enough pressure to pump blood throughout the entire systemic circulation .
4. What structure separates the right and left atria?
A) Interventricular septum
B) Interatrial septum
C) Coronary sulcus
D) Ligamentum arteriosum
The interatrial septum is the wall of tissue that physically divides the right and
left atria .
5. Where are pectinate muscles primarily located in the heart?
A) In the right atrium and auricles
B) In the apex of the left ventricle
C) Along the interventricular septum
D) Inside the pulmonary trunk
Pectinate muscles are prominent ridges of myocardium found inside the
anterior wall of the right atrium and within both auricles .
6. What is the name of the depression found in the interatrial septum that
represents the remnant of a fetal opening?
A) Foramen ovale
B) Fossa ovalis
,C) Coronary sinus
D) Sulcus terminalis
The fossa ovalis is a shallow depression in the adult interatrial septum,
representing the remnant of the fetal foramen ovale .
7. Which heart valve prevents the backflow of blood into the right ventricle
during ventricular diastole?
A) Tricuspid valve
B) Bicuspid valve
C) Aortic semilunar valve
D) Pulmonary semilunar valve
The pulmonary semilunar valve closes during ventricular diastole to prevent
ejected blood in the pulmonary trunk from flowing back into the right ventricle .
8. Which valve is positioned between the left atrium and the left ventricle?
A) Tricuspid valve
B) Bicuspid (mitral) valve
C) Aortic semilunar valve
D) Pulmonary semilunar valve
The bicuspid (mitral) valve regulates blood flow between the left atrium and left
ventricle .
9. What is the structural function of the chordae tendineae?
A) To actively pull the AV valves open during diastole
B) To transmit electrical signals to the papillary muscles
C) To anchor AV valve cusps and prevent eversion during systole
D) To constrict the fibrous skeleton during ventricular contraction
, The chordae tendineae anchor the cusps of the AV valves to the papillary
muscles, preventing them from everting (prolapsing) back into the atria during
ventricular contraction .
10. What is the term for the irregular ridges of muscle lining the internal
walls of the ventricles?
A) Pectinate muscles
B) Papillary muscles
C) Trabeculae carneae
D) Purkinje fibers
Trabeculae carneae are the raised, muscular ridges lining the interior walls of
both ventricles. Pectinate muscles are located in the atria .
11. Which structure anchors the heart to surrounding structures like the
diaphragm and sternum?
A) Visceral pericardium
B) Fibrous pericardium
C) Parietal pericardium
D) Endocardium
The fibrous pericardium is the tough, external sac that anchors the heart to
surrounding structures .
12. The posterior wall of the left atrium is formed by the merging of which
structures?
A) Superior vena cava
B) Four pulmonary veins
C) Coronary sinus
D) Inferior vena cava
Module 2 Exam Review | 92 Practice Questions with
Answers & Rationales | Cardiovascular System: The Heart |
LockDown Browser Ready | 2026
Part 1: Heart Anatomy & Wall Layers (Questions 1-15)
1. Which layer of the heart wall is synonymous with the visceral layer of
the serous pericardium?
A) Endocardium
B) Myocardium
C) Epicardium
D) Fibrous pericardium
The epicardium is the outermost layer of the heart wall and is identical to the
visceral layer of the serous pericardium .
2. What type of epithelium forms the endocardium?
A) Simple cuboidal epithelium
B) Simple squamous epithelium
C) Stratified squamous epithelium
D) Pseudostratified columnar epithelium
The endocardium is lined by simple squamous epithelium (endothelium), which
minimizes friction as blood flows through the heart chambers .
3. Which chamber of the heart has the thickest myocardium?
,A) Right atrium
B) Left atrium
C) Right ventricle
D) Left ventricle
The left ventricle has the thickest myocardium because it must generate
enough pressure to pump blood throughout the entire systemic circulation .
4. What structure separates the right and left atria?
A) Interventricular septum
B) Interatrial septum
C) Coronary sulcus
D) Ligamentum arteriosum
The interatrial septum is the wall of tissue that physically divides the right and
left atria .
5. Where are pectinate muscles primarily located in the heart?
A) In the right atrium and auricles
B) In the apex of the left ventricle
C) Along the interventricular septum
D) Inside the pulmonary trunk
Pectinate muscles are prominent ridges of myocardium found inside the
anterior wall of the right atrium and within both auricles .
6. What is the name of the depression found in the interatrial septum that
represents the remnant of a fetal opening?
A) Foramen ovale
B) Fossa ovalis
,C) Coronary sinus
D) Sulcus terminalis
The fossa ovalis is a shallow depression in the adult interatrial septum,
representing the remnant of the fetal foramen ovale .
7. Which heart valve prevents the backflow of blood into the right ventricle
during ventricular diastole?
A) Tricuspid valve
B) Bicuspid valve
C) Aortic semilunar valve
D) Pulmonary semilunar valve
The pulmonary semilunar valve closes during ventricular diastole to prevent
ejected blood in the pulmonary trunk from flowing back into the right ventricle .
8. Which valve is positioned between the left atrium and the left ventricle?
A) Tricuspid valve
B) Bicuspid (mitral) valve
C) Aortic semilunar valve
D) Pulmonary semilunar valve
The bicuspid (mitral) valve regulates blood flow between the left atrium and left
ventricle .
9. What is the structural function of the chordae tendineae?
A) To actively pull the AV valves open during diastole
B) To transmit electrical signals to the papillary muscles
C) To anchor AV valve cusps and prevent eversion during systole
D) To constrict the fibrous skeleton during ventricular contraction
, The chordae tendineae anchor the cusps of the AV valves to the papillary
muscles, preventing them from everting (prolapsing) back into the atria during
ventricular contraction .
10. What is the term for the irregular ridges of muscle lining the internal
walls of the ventricles?
A) Pectinate muscles
B) Papillary muscles
C) Trabeculae carneae
D) Purkinje fibers
Trabeculae carneae are the raised, muscular ridges lining the interior walls of
both ventricles. Pectinate muscles are located in the atria .
11. Which structure anchors the heart to surrounding structures like the
diaphragm and sternum?
A) Visceral pericardium
B) Fibrous pericardium
C) Parietal pericardium
D) Endocardium
The fibrous pericardium is the tough, external sac that anchors the heart to
surrounding structures .
12. The posterior wall of the left atrium is formed by the merging of which
structures?
A) Superior vena cava
B) Four pulmonary veins
C) Coronary sinus
D) Inferior vena cava
