RabbitMQ and relationship between channel and connection

RabbitMQ and relationship between channel and connection

The RabbitMQ Java client has the following concepts:
Connection - a connection to a RabbitMQ server instance
Channel - ???
Consumer thread pool - a pool of threads that consume messages off the
RabbitMQ server queues
Queue - a structure that holds messages in FIFO order
I'm trying to understand the relationship, and more importantly, the
associations between them.
I'm still not quite sure what a Channel is, other than the fact that this
is the structure that you publish and consume from, and that it is created
from an open connection. If someone could explain to me what the "Channel"
represents, it might help clear a few things up.
What is the relationship between Channel and Queue? Can the same Channel
be used to communicate to multiples Queues, or does it have to be 1:1?
What is the relationship between Queue and the Consumer Pool? Can multiple
Consumers be subscribed to the same Queue? Can multiple Queues be consumed
by the same Consumer? Or is the relationship 1:1?
Thanks in advance for any help here!