The Pogonophora

question 24

Multiple Choice

The Pogonophora

• A) Are worm-like in shape
• B) Lack a complete digestive tract
• C) Are found in the deep sea
• D) All of the above

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Definitions:

Neurotransmitters

Chemical substances in the body that transmit signals across a chemical synapse from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Dynorphin

A type of opioid peptide that plays a role in pain, emotion, stress, and addiction processes within the body.

Glutamate

An important neurotransmitter in the brain involved in learning and memory.

Endorphins

Natural chemicals in the body that interact with brain receptors to reduce perception of pain and trigger positive feelings.