Pectoralis Major Muscle: Chest, Shoulder, Upper Back, Arm, Hand

The pectoralis major contributes to pain in the chest, shoulder, breast and upper back. Pain can also travel down the inner arm, elbow and extend to the hand and last two fingers.

Pectoralis Minor - Physiopedia

Pectoralis Major Muscle - Attachment, Action & Innervation

What You Need to Know About Your Pectorals – Genesis Bailey Fitness

Tight Chest Muscles: Why Your Upper Back Is the Key to Their Release — Laguna Orthopedic Rehabilitation

Chest and Shoulder Workout Routine (8 Exercises) – StrengthLog

Pectoralis Major Muscle: Chest, Shoulder, Upper Back, Arm, Hand Pain - The Wellness Digest

The muscles of the chest and upper back

Tight Chest Muscles: Why Your Upper Back Is the Key to Their Release — Laguna Orthopedic Rehabilitation

Arm and hand pain: Pectoralis minor entrapment – Christina's Pain Therapy Blog

5 Stretches for Tight Chest Muscles - InSync Physiotherapy