In severed cardiac nerves condition, the heart would stop beating because the cardiomyocytes would not receive any signal that inhibits the contraction process. Adequate information: The heart is composed of cardiac muscle tissue. It helps in contractions that result in pumping blood into the vessels. Cardiac muscles are striated and are organized into sarcomeres due to which they have the same banding structure as skeletal muscle. The muscle fibers of the heart are connected in a branched form by intercalated discs. This disc helps the cardiac muscle cells to contract in a wave-like pattern due to which a heart can work as a pump. To determine: The given statement, if the cardiac nerves were severed, the heart would stop beating because the cardiomyocytes would receive no signals and could not contract is true or false. Given Information: The cardiac muscles inhibit the contraction when the cardiomyocytes unable to receive signals due to severe cardiac nerve.

Question

Want to see the full answer?

Answer 1

Question

Chapter 20, Problem 6WWWTS

Summary Introduction

Case summary:

In severed cardiac nerves condition, the heart would stop beating because the cardiomyocytes would not receive any signal that inhibits the contraction process.

Adequate information:

The heart is composed of cardiac muscle tissue. It helps in contractions that result in pumping blood into the vessels. Cardiac muscles are striated and are organized into sarcomeres due to which they have the same banding structure as skeletal muscle. The muscle fibers of the heart are connected in a branched form by intercalated discs. This disc helps the cardiac muscle cells to contract in a wave-like pattern due to which a heart can work as a pump.

To determine:

The given statement, if the cardiac nerves were severed, the heart would stop beating because the cardiomyocytes would receive no signals and could not contract is true or false.

Given Information:

The cardiac muscles inhibit the contraction when the cardiomyocytes unable to receive signals due to severe cardiac nerve.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

You aim to test the hypothesis that the Tbx4 and Tbx5 genes inhibit each other's expression during limb development. With access to chicken embryos and viruses capable of overexpressing Tbx4 and Tbx5, describe an experiment to investigate whether these genes suppress each other's expression in the limb buds. What results would you expect if they do repress each other? What results would you expect if they do not repress each other?

You decide to delete Fgf4 and Fgf8 specifically in the limb bud. Explain why you would not knock out these genes in the entire embryo instead.

You implant an FGF10-coated bead into the anterior flank of a chicken embryo, directly below the level of the wing bud. What is the phenotype of the resulting ectopic limb? Briefly describe the expected expression domains of 1) Shh, 2) Tbx4, and 3) Tbx5 in the resulting ectopic limb bud.