The Action Potentials of Myocardial Autorhythmic Cells, Are Due to a Combination

question 82

Multiple Choice

The action potentials of myocardial autorhythmic cells, are due to a combination of increasing Na²⁺ ________ and decreasing K⁺ ________.

• A) influx, efflux
• B) efflux, influx
• C) influx, influx
• D) efflux, efflux

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Definitions:

Phloem

The vascular tissue in plants responsible for the transport of nutrients and carbohydrates produced by photosynthesis.

Sieve Plates

Sieve plates are the porous end walls that enable transport between sieve tube elements in the phloem of plants, facilitating the flow of nutrients.

Companion Cells

Companion cells are specialized cells in the phloem of plants that assist in the transport of sugars and other nutrients.

Annual Growth Rings

Concentric rings found in the wood, indicating the age of a tree by representing a year of growth.