sure, you can do 1 muscle a day.
lets see we have:
1)pecs
2)traps, can we do upper, mid, and low on the same day?
3)deltoids, can we do anterior, medial, and posterior on the same day?
4)biceps, can we do the brachioradialis on the same day?
5)triceps
6)latisumus dorsi
7)spinal erectors
8)low back
9)rectus abdominus
10)obliques
11)quads
12)hamstrings
13)calves
14)hip adductors
15)hip abductors
so we are going for a 15 day cycle. sounds good. and seeing as how we are trying to focus on a specific muscle i guess we can leave out weak ass stuff like overhead pressing, bench press, rows, squats, deadlifts, or well any other mass building, ohh i mean, compound exercise.
seriously. body part splits are great for professional level bodybuilders that have spend 10+ years getting huge and require massive amounts of volume to stimulate growth. they are also likely on massive amount of legal and non legal supplementation to speed up recovery and increase work capacity. and even then anytime you add in compound movements you are working more then 1 muscle and therefore fail in doing 1 body part a day. most body parts will get hit several times a week no matter what unless you only do isolation exercises.
to best help you, lets find out one important thing. what is your goal for working out?