Buds on new growth

Wondered if anyone could shed light on the small light coloured markings along the stem itself.
Are these all just lenticels? Some seem more pronounced and I'm wondering if they are immature/undeveloped buds of some form or other ?
Ultimately do they have any role in the future development of the shoot ?

While I'm here, I also noticed that the leaf scars have 3 obviously bundle 'holes'. Does anyone know of reference reading that goes into more detail about the form & patterns of scars ?

Thanks for any guidance