Fill in the words or phrases that best complete each sentence. Be as specific as possible. thank you!
f. During embryonic development, ninety-nine percent of the cardiac fibers are specialized for the function called----------------- , whereas the remainder is specialized for----------------------- .
g. The action potential delay at the------------------------------- ensures that atrial excitation and contraction are complete before -------------------------- excitation and contraction commence.
h. The ------------------ is the volume of blood in the ventricle after ejection has been completed. An increase of this volume occurs when the stroke volume is------------------------ .
i. The three cations, K+, Ca2+, and Na+ have an important effect of heart function. Increased blood levels of Na+ blocks --------------------- inflow and results in a decrease in the force of contraction, while an excess of ----------------------- blocks the generation of action potentials.
j. An increase in parasympathetic activity has the following effect on stroke volume:-------------------- . An increase in parasympathetic activity ---------------------- atrial contractility.
Fill in the words or phrases that best complete each sentence. Be as specific as possible. thank you!
f. During embryonic development, ninety-nine percent of the cardiac fibers are specialized for the function called----------------- , whereas the remainder is specialized for----------------------- .
g. The action potential delay at the------------------------------- ensures that atrial excitation and contraction are complete before -------------------------- excitation and contraction commence.
h. The ------------------ is the volume of blood in the ventricle after ejection has been completed. An increase of this volume occurs when the stroke volume is------------------------ .
i. The three cations, K+, Ca2+, and Na+ have an important effect of heart function. Increased blood levels of Na+ blocks --------------------- inflow and results in a decrease in the force of contraction, while an excess of ----------------------- blocks the generation of action potentials.
j. An increase in parasympathetic activity has the following effect on stroke volume:-------------------- . An increase in parasympathetic activity ---------------------- atrial contractility.