Biceps. Brachhil
There are no muscles listed in the question on which to give an answer.
You're going to have to be clearer which muscles you're asking about.
It functions as a direct object.
No
Yes.
direct
There is no direct object in this sentence.
Trip is the direct object.
They direct the muscles to help us move
Arector pili muscles get innervation from sympathetic out flow. But the neurotransmitter is acetylcholine. So functionally the nerve supply is parasympathetic.
Personality is the direct object in that sentence.
Yes. There is your heart, and several other involuntary muscles.