A Crayfish Is a Member of the Phylum

question 12

Multiple Choice

A crayfish is a member of the phylum

• A) Echinodermata.
• B) Mollusca.
• C) Annelida.
• D) Platyhelminthes.
• E) Arthropoda.

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Definitions:

Axon Terminals

The endings of axons that make synaptic connections with other nerve cells or with effector cells.

Telodendria

The fine terminations of an axon or dendrite which are involved in transmitting the nerve impulse to other neurons or to muscles.

Neurofibrils

Fine, threadlike structures within nerve cells that contribute to the cell's support and transport functions.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out neural signals.