CSCC BIO 2300 Unit 4 Concept C: Heart
Questions and Answers (Top Grade
Assured) 2026 Update
In the average normal adult, the heart weighs about ______
grams. - Correct Answers ✅300 grams
The outermost heart layer of the heart wall is the ______ and
is also known as the ______ layer of the serous pericardium. -
Correct Answers ✅epicardium, visceral
As we age,______ is deposited in the epicardium, and so this
layer becomes ______. - Correct Answers ✅fat, thicker
The myocardium is the ______ of the three heart wall layers. -
Correct Answers ✅thickest
The ______ surface of the heart and the ______ surfaces of the
heart valves are covered by endocardium. - Correct
Answers ✅internal, external
The heart is a relatively small, conical organ approximately
the size of a person's ______. - Correct Answers ✅clenched
fist
The anterior part of each atrium is a wrinkled, flap like
extension, called a(n) ______ because it resembles an ear. -
Correct Answers ✅auricle
, CSCC BIO 2300 Unit 4 Concept C: Heart
Questions and Answers (Top Grade
Assured) 2026 Update
The epicardium is composed of simple squamous epithelium
and ______ connective tissue. - Correct Answers ✅areolar
Two large arteries, the ______ and the ______ exit the
ventricles of the heart. - Correct Answers ✅pulmonary
trunk and aorta
The endocardium is composed of a ______ squamous
epithelium, called an endothelium, and a layer of ______
connective tissue. - Correct Answers ✅simple, areolar
The right atrioventricular opening is covered by the ______
valve. - Correct Answers ✅tricuspid valve
The right atrium receives blood from the ______ circulation,
and the left atrium receives blood from the _______
circulation. - Correct Answers ✅systemic/pulmonary
The inferior chambers of the heart are the_________________. -
Correct Answers ✅ventricles
The anterior and inferior interventricular sulci extend
inferiorly from the ______ sulcus toward the heart ______. -
Correct Answers ✅coronary, apex
Questions and Answers (Top Grade
Assured) 2026 Update
In the average normal adult, the heart weighs about ______
grams. - Correct Answers ✅300 grams
The outermost heart layer of the heart wall is the ______ and
is also known as the ______ layer of the serous pericardium. -
Correct Answers ✅epicardium, visceral
As we age,______ is deposited in the epicardium, and so this
layer becomes ______. - Correct Answers ✅fat, thicker
The myocardium is the ______ of the three heart wall layers. -
Correct Answers ✅thickest
The ______ surface of the heart and the ______ surfaces of the
heart valves are covered by endocardium. - Correct
Answers ✅internal, external
The heart is a relatively small, conical organ approximately
the size of a person's ______. - Correct Answers ✅clenched
fist
The anterior part of each atrium is a wrinkled, flap like
extension, called a(n) ______ because it resembles an ear. -
Correct Answers ✅auricle
, CSCC BIO 2300 Unit 4 Concept C: Heart
Questions and Answers (Top Grade
Assured) 2026 Update
The epicardium is composed of simple squamous epithelium
and ______ connective tissue. - Correct Answers ✅areolar
Two large arteries, the ______ and the ______ exit the
ventricles of the heart. - Correct Answers ✅pulmonary
trunk and aorta
The endocardium is composed of a ______ squamous
epithelium, called an endothelium, and a layer of ______
connective tissue. - Correct Answers ✅simple, areolar
The right atrioventricular opening is covered by the ______
valve. - Correct Answers ✅tricuspid valve
The right atrium receives blood from the ______ circulation,
and the left atrium receives blood from the _______
circulation. - Correct Answers ✅systemic/pulmonary
The inferior chambers of the heart are the_________________. -
Correct Answers ✅ventricles
The anterior and inferior interventricular sulci extend
inferiorly from the ______ sulcus toward the heart ______. -
Correct Answers ✅coronary, apex
