Syntax

Syntactic actants

Actant 1: whose chest it is
(a) Genitive
(b) Possessive
Она прижалась к груди мужа. She pressed herself to her husband's chest.
Его грудь была мускулистая и волосатая. His chest was muscular and hairy.
NB When the word грудь functions as a subject and does not have a descriptive modifier, the construction грудь у + Genitive is often preferred to (a) and (b), above:
Грудь у него была мускулистая и волосатая. His chest was muscular and hairy.