Once an SA Nodal Cell Reaches Threshold, the Depolarization Phase

question 115

Multiple Choice

Once an SA nodal cell reaches threshold, the depolarization phase occurs during which

• A) potassium comes in through fast voltage-gated channels.
• B) calcium comes in through fast voltage-gated channels.
• C) potassium moves out through fast voltage-gated channels.
• D) sodium moves out through slow voltage-gated channels.
• E) calcium moves out through slow voltage-gated channels.

Explain the physiological impact of undernourishment and how it affects the body.

Identify dietary sources to prevent specific nutrient deficiency diseases.

Distinguish between the dietary needs and adaptations of different types of animals, including heterotrophs, autotrophs, saprobes, and detritivores.

Understand the causes and effects of specific nutritional deficiency diseases.

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