Which of the Following Statements About the Refractory Period of Neuronal

question 142

Multiple Choice

Which of the following statements about the refractory period of neuronal or muscle membranes is TRUE?

• A)In nerve cells,the absolute refractory period coincides with the period of increased K⁺ permeability.
• B)In skeletal muscle cells,the absolute refractory period lasts about as long as the twitch.
• C)In ventricular cells,the absolute refractory period coincides with the period of increased Na⁺ and Ca²⁺ permeability.
• D)The relative refractory period in neuronal membranes lasts about the same length of time as the absolute refractory period in cardiac muscle cell membranes.
• E)The refractory period in an alpha-motor neuron membrane is much briefer than the refractory period in a skeletal muscle cell membrane.

---

Definitions:

Specifiers

Are additional descriptors used in psychiatric diagnosis to provide a more comprehensive picture of the disorder.

Biological Preparedness

The concept that organisms are inherently inclined to form associations between certain stimuli and responses, facilitating the learning process.

Seligman

A psychologist known for his work in positive psychology and theories related to learned helplessness and optimism.

Etiologies

The study of the causes or origins of diseases, disorders, or conditions, determining how they develop and why.