1. precommand levelcontrols the outputs of the cortex and regulates motor activity.
2. segmental levelcentral pattern generators.
3. projection levelintermediate relay for incoming and outgoing neurons.
4. the cerebellum and basal nuclei.
5. includes cortical and brain stem motor areas.
6. the neural machinery of the spinal cord, including spinal cord circuits.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

answerlength of time the medication is in contact with the skin(moistur level of the skin) depth of respirations blood supply to the area; all of the above; ///