PNB 2265 PRACTICAL 1 FROG HEART QUIZZES
WITH ACCURATE ANSWERS 2026 – 2027 .
Major differences between human heart and frog heart - Correct Answer -Frog heart has 3
chambers instead of 2.
In human heart, pacemaker cells are located in SA node whereas in the frog heart, they are
located in the SV node.
The human heart has 2 ventricles. The heart frog has 1 ventricle so there is some mixing of
oxygenated and deoxygenated blood.
Trabeculae - Correct Answer -Columns of muscular tissue that provides a site of attachment
for papillar muscles
Spiral folds - Correct Answer -Present in the vessels of the heart; helps guide blood flow
from atria to systemic arteries
Negative electrode - Correct Answer -Goes on the frog heart
Positive electrode - Correct Answer -Goes on right shoulder
Ground electrode - Correct Answer -Goes on left thigh
Q10 - Correct Answer -temperature coefficient; measures how much the rate of a process
increases with a temp change of 10 degrees
Frank starling law - Correct Answer -describes length-tension relationship of the heart and
cardiac output.
Within physiological limits, with higher Right Atrial Pressure, cardiac output increases up to
a max value
1
WITH ACCURATE ANSWERS 2026 – 2027 .
Major differences between human heart and frog heart - Correct Answer -Frog heart has 3
chambers instead of 2.
In human heart, pacemaker cells are located in SA node whereas in the frog heart, they are
located in the SV node.
The human heart has 2 ventricles. The heart frog has 1 ventricle so there is some mixing of
oxygenated and deoxygenated blood.
Trabeculae - Correct Answer -Columns of muscular tissue that provides a site of attachment
for papillar muscles
Spiral folds - Correct Answer -Present in the vessels of the heart; helps guide blood flow
from atria to systemic arteries
Negative electrode - Correct Answer -Goes on the frog heart
Positive electrode - Correct Answer -Goes on right shoulder
Ground electrode - Correct Answer -Goes on left thigh
Q10 - Correct Answer -temperature coefficient; measures how much the rate of a process
increases with a temp change of 10 degrees
Frank starling law - Correct Answer -describes length-tension relationship of the heart and
cardiac output.
Within physiological limits, with higher Right Atrial Pressure, cardiac output increases up to
a max value
1
