The Pectoralis Minor Muscle

The Pectoralis Minor Muscle

David Keil Upper Limb Leave a Comment

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What does pectoralis minor mean?

The Pectoralis Minor MuscleThe name of the pectoralis minor muscle describes the general location of this muscle.
Pectoralis comes from the Latin word “pectus” meaning breast.
Minor comes from Greek and means “the lesser”.
This is the smaller of the two pectoralis muscles.

Where does the pectoralis minor muscle attach?

Origin

It originates on the third, fourth, and fifth rib

Insertion

It  inserts on the coracoid process of the scapula

What actions does the pectoralis minor muscle do?

  • Depression
  • Downward Rotation
  • Protraction

What are the most common injuries to the pectoralis minor muscle?

The pectoralis minor muscle doesn’t necessarily get injured. However, it is important to note that the nerves, as well as the arteries and veins that feed the arm, all run beneath the pectoralis minor muscle. If the muscle is strained or gets too tight it can compress these structures, causing problems all the way down the arm. At this point it usually fits in under a condition known as Thoracic Outlet Syndrome.

Postures where the pectoralis minor muscle contracts

pectoralis minor muscle in upluthih

As we push into the floor and lift our body, our scapulae depress, an action of pectoralis minor.

Postures where the pectoralis minor muscle lengthens

pectoralis minor muscle in dhanurasana

In dhanurasana the scapulae are retracted, stretching the pectoralis minor.

Trigger points

Pectoralis Minor Trigger Points

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About David Keil

This website is simply about delivering yoga anatomy to the yoga community in a simple and understandable way. It has always been about you, the reader, understanding the complexity and diversity of our own humanness as well as our anatomy.

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