The First Mammals Were

question 25

Multiple Choice

The first mammals were

• A) large and diurnal.
• B) small and nocturnal.
• C) large and nocturnal.
• D) small and crepuscular.

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Definitions:

Schwann Cells

Peripheral nervous system cells that produce myelin, insulating axons to increase the speed at which electrical impulses are conducted.

Multipolar Neuron

A type of neuron characterized by having one axon and multiple dendrites, allowing for the integration of a large amount of information from various sources.

Bipolar Neuron

A type of neuron that has two extensions (one dendrite and one axon), commonly found in the sensory systems like retina and olfactory system.

Neuroglial Cell

Non-neuronal cells in the nervous system that provide support and protection for neurons, playing a crucial role in maintaining homeostasis and forming myelin.