What Body Feature Is Most Responsible for Freeing Vertebrates from Dependence

question 58

Multiple Choice

What body feature is most responsible for freeing vertebrates from dependence on watery habitats?

• A)lungs
• B)paired appendages
• C)shelled, amniote eggs
• D)a four-chambered heart
• E)fur

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Definitions:

Synaptic Vesicles

Small structures within neurons that store neurotransmitters, which are released into the synaptic cleft to transmit neural signals.

Neurotransmitters

Neurotransmitters are chemicals found in the nervous system that transmit signals across a synapse from one neuron to another, influencing mental processes and behavior.

Myelin

An insulating layer, or sheath, made of protein and fatty substances, that surrounds the axons of some neurons, enabling fast and efficient transmission of electrical impulses.

Synaptic Cleft

The small gap at a synapse between neurons, across which neurotransmitters move from one neuron to another.