On the Cellular Level, Sleep Occurs Because of

question 46

Multiple Choice

On the cellular level, sleep occurs because of

• A) hyperpolarization of the cells of the thalamus and cortex.
• B) depolarization of the cells of the thalamus and cortex.
• C) increased synaptic input between axons and neurons in the thalamus and cortex.
• D) desynchronization of electrical impulses in the cortex.
• E) decreased opening of potassium and calcium channels in the membranes of cortical cells.

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Definitions:

Senescence

The process of aging, where cells progressively lose the ability to divide and function until they die, affecting the organism's overall physiology.

Evolutionary Theory

A set of scientific principles and hypotheses that explain the diversity of life on Earth through the process of evolution by natural selection.

Life History

Life history refers to the pattern of investment an organism makes in growth and reproduction. Life history traits include an organism’s age at first reproduction, the duration and schedule of reproduction, the number and size of offspring produced, and life span.

Age At First Reproduction

The age at which an organism successfully produces offspring for the first time, an important life-history trait affecting fitness and evolution.