Fig. 9.

Chicken embryo heart dimensional changes after banding. (a) Ventricular diameters at end diastole (maximum diameter) and end systole (minimum diameter) at the V2 position; and (b) change in diameter, calculated as the difference between end diastolic and end systolic diameter. (c) Ventricular areas at end diastole and end systole; and (d) change in area, calculated as the difference between end diastolic and end systolic area. (e) Maximum and minimum OFT diameters at the O2 position; and the (f) change in diameter, calculated as the difference between maximum and minimum diameter over the cardiac cycle. Data are shown as $\text{mean}\pm \mathrm{SEM}$; $p$-values obtained from Student’s $t$-tests of less than 0.05 were considered statistically significant and are denoted by asterisks.