In Some Invertebrates,if We Cut the Nerves Leading to the Heart

question 13

Multiple Choice

In some invertebrates,if we cut the nerves leading to the heart and the heart stops beating,the heart is considered

• A)an open system.
• B)myogenic.
• C)neurogenic.
• D)a deferred pacemaker.
• E)asynchronous.

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Definitions:

Nuclear Medicine

The use of radionuclides, or radioisotopes (radioactive elements or their compounds), to evaluate the bone, brain, lungs, kidneys, liver, pancreas, thyroid, and spleen; also known as radionuclide imaging.

Radioisotope

An atom with an unstable nucleus that emits radiation during its decay to a stable form.

Nonionizing Radiation

Radiation that has enough energy to move atoms around or make them vibrate, but not enough to ionize (remove charged particles such as electrons) atoms or molecules.

Radionuclide Imaging

A medical imaging technique using small amounts of radioactive material to diagnose or treat diseases.