I think Autorhythmic fibers are fibers that are self excitable or on their own for example some cardiac muscle. They repeatedly generate action potentials that trigger heart contractions.They continue to stimulate a heart to beat even when it is removed from the body. In comparison to contractile fibers, autorhythmic fibers are self excitable and do not require nervous system stimulation to trigger contractions. Contractile fibers have stable resting membrane potentials of -90mV, when a contractile fibers reaches threshold by action potential, the voltage gated fast sodium ions channels will open.

5 0

3 years ago

Question 3

andrey2020 [161]

The answer to this question is damp

7 0

2 years ago

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What happens to carbon from plants and animals that gets buried for millions of years?

zhuklara [117]

Answer:

used by plants as nutrients i think

Explanation:

7 0

1 year ago

Firewood is made up of cellulose, which is a polymer of glucose molecules. When burning, heat and light are given off, indicatin

skelet666 [1.2K]

Answer:

Exergonic reaction

Explanation:

A chemical reaction which is associated with a release of energy and thus, is associated with a negative free energy change is said to be an exergonic reaction.

An exergonic reaction owing to the negative free energy change is a spontaneous reaction.

The energy that is released in the exergonic reaction is usually observed in the form of heat and light.

The energy is released due to the breaking of the chemical bonds.

Therefore, on burning of the firewood the bonds between the glucose molecules break up which leads to the release of energy in the form of heat and light and this is thus, an example of an exergonic reaction.

7 0

3 years ago