Sympathetic supply to hea: (A) C5 - C7, (B) T1 - T4, (C) C1 - C4, (D) T5 - T9
Answer is B. Sympathetic nerves are derived from upper four to five thoracic segments of spinal cord .that is from T1-T4 ganglia. BD CHAURASIS'S HUMAN ANATOMY VOLUME 1. 6TH EDITION.Page no 267.fig.18.30