The Vertebra That Lacks a Body and Helps Allow One

question 52

Multiple Choice

The vertebra that lacks a body and helps allow one to nod the head is the

• A) axis.
• B) atlas.
• C) coccyx.
• D) vertebra prominens.

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Definitions:

Dendritic Spine Density

A measure of the number of dendritic spines (small outgrowths from neurons) per unit length of dendrite, important for synaptic strength and neural connectivity.

Cocaine

A powerful and illegal stimulant drug derived from the leaves of the coca plant, known for its addictive properties and ability to increase levels of dopamine in the brain.

AMPA Receptor

The AMPA receptor is a type of glutamate receptor in the central nervous system that plays a crucial role in fast synaptic transmission and plasticity, contributing significantly to learning and memory.

Glutamate

An excitatory neurotransmitter crucial for brain functions including learning and memory, acting as a chemical messenger in the nervous system.