QuestionSBA
QuestionChoice
This is incorrect. In eccentric hypertrophy, new sarcomeres are added in series to the existing ones, resulting in an increase in chamber size without an increase in wall thickness. Concentric hypertrophy, on the other hand, does result in wall thickening.
10026351
b
Eccentric hypertrophy causes an enlargement in chamber size in proportion to an increase in wall thickness
QuestionChoice
This is incorrect. This describes concentric hypertrophy. Eccentric hypertrophy occurs as a result of endurance training, not pressure overload.
10026352
c
Eccentric hypertrophy occurs when the heart adapts to pressure overload (e.g. in hypertension)
QuestionChoice
This is incorrect. Eccentric hypertrophy is a form of physiological remodelling whereby the myocytes increase in length but not width. This results in an increase in chamber size without an increase in wall thickness. Concentric hypertrophy, on the other hand, occurs secondary to pressure overload (e.g. in hypertension) and involves significant wall thickening.
10026353
d
Eccentric and concentric hypertrophy are synonymous terms referring to the same process of cardiac remodelling
QuestionChoice
This is incorrect. Concentric hypertrophy occurs when sarcomeres are added in parallel to the existing ones, resulting in the thickening of the chamber walls and hence an increase in myocardial mass.
10026354
e
Eccentric hypertrophy results in a reduction in myocardial mass
QuestionChoice
This is correct. Eccentric hypertrophy is a form of physiological remodelling whereby the myocytes increase in length but not width. This results in an increase in chamber size without an increase in wall thickness.
10026350
a
Eccentric hypertrophy does not result in an increased myocardial wall thickness
Concept
Chapter
2693
4534
Myocytes
Topic
159
Cardiovascular physiology
17668
Which of the following correctly distinguishes concentric from eccentric hypertrophy?
a