pectoralis minor


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pectoralis minor

[‚pek·tə′ral·əs ′mīn·ər]
(anatomy)
The small, deep muscle connecting the third to fifth ribs with the scapula.
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A significantly decreased pectoralis minor strength on the left (p=0.
UPPER CROSSED SYNDROME MUSCULATURE Overly facilitated Overly inhibited ("tight") muscles ("weak") muscles Pectoralis major Rhomboids Pectoralis minor Middle and lower trapezius Subclavius Serratus anterior Upper trapezius Longus colli and capitis (deep neck flexors) Levator scapulae Infraspinatus and teres minor Sternocleidomastoid Thoracic paraspinals (SCM) Suboccipital group Table 2.
A large collateral branch arose from the axillary artery at the medial border of the pectoralis minor muscle, which gave many branches which otherwise arise from the second and third parts of the axillary artery and we propose to name this artery as common subscapular trunk
Laterally, pectoralis minor inserts onto the coracoid process, and the neurovascular bundle can be found lying posterior to the muscle and inferior and medial to the coracoid process.
Muscle flexibility of the upper trapezius, levator scapula, serratus anterior, rhomboids, middle trapezius, lower trapezius, and pectoralis minor was measured.
The pectoralis minor muscle is positioned posterior to the pectoralis major muscle, extending from the third, fourth or fifth ribs to the coracoid process of the scapula.
16, 20) The medial pectoral nerve (C8-T1) supplies the pectoralis minor and the lower sternocostal segments after arising from the posterior cord and traveling distally either through or lateral to the pectoralis minor, then entering the posterior aspect of the PM 11.
Serial helical scans of upper chest revealed that there was complete absence of both sternal and clavicular parts of right pectoralis major and pectoralis minor muscle.
The pectoralis major muscle was under-developed but the pectoralis minor muscle as well as the anterior serratus muscle were present (Figure-2).
Near the lateral margins of the pectoralis minor muscle, each cord terminates in 2 major nerve branches (Figure 1).
Palpation of the right pectoralis minor, anterior scalene, upper trapezius, and levator scapulae muscles revealed tenderness and hypertonicity.
A relationship between pectoralis minor muscle tightness and rounded shoulder posture (RSP) has been suggested, but evidence demonstrating that treatment aimed at the pectoralis minor affects posture or muscle function such as lower trapezius strength (LTS) remains lacking.