Which of the Following Is the Normal Sequence of Signal

question 16

Multiple Choice

Which of the following is the normal sequence of signal conduction in the human heart?

• A) neural and chemical messengers -AV node -atria -SA node -ventricles
• B) neural but not chemical messengers -AV node -ventricles -SA node - atria
• C) neural and chemical messengers -ventricles -SA node -atria -AV node
• D) neural and chemical messengers -SA node -atria -AV node -ventricles
• E) chemical but not neural messengers -atria -SA node -ventricles -AV node

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Definitions:

Chlorophylls

A group of green pigments found in plants and some microorganisms, critical for photosynthesis by enabling the absorption of light energy.

Multicellular Gametangia

Specialized organs found in multicellular plants and algae that produce gametes (reproductive cells).

Green Algae

A large and diverse group of photosynthetic, often aquatic plant-like organisms, important in the ecological balance of many freshwater and marine environments.

Charophytes

Group of green algae closely related to land plants.