All cards
1
Pectoralis major origin
Clavicular head - Medial Clavicle
Sternal head - Sternum and costal cartilages of superior ribs
Sternal head - Sternum and costal cartilages of superior ribs
2
Pectoralis Major Insertion
lateral bicipital (intertubercular) groove of humerus
3
Pectoralis Major actions
Both Heads:
Adduction of shoulder
Horizontal adduction of shoulder
internal rotation of shoulder
Clavicular Head:
Flexion of shoulder
Sternal Head:
Extension of shoulder to neutral
Adduction of shoulder
Horizontal adduction of shoulder
internal rotation of shoulder
Clavicular Head:
Flexion of shoulder
Sternal Head:
Extension of shoulder to neutral
4
Pectoralis Major nerve supply
clavicular head: lateral and medial pectoral nerves
Sternal head: medial pectoral nerve
Sternal head: medial pectoral nerve
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Pectoralis Minor origin
anterior surface of ribs 3-5
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Pectoralis Minor insertion
coracoid process of scapula
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Pectoralis Minor action
protraction of scapula
depression of scapula
downward rotation of scapula
depression of scapula
downward rotation of scapula
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Pectoralis Minor nerve supply
medial pectoral nerve
9
Serratus Anterior origin
lateral surface of superior ribs
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Serratus Anterior insertion
medial (vertebral) border of scapula
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Serratus Anterior action
protraction of scapula
upward rotation of scapula
holds scapula to thoracic wall
upward rotation of scapula
holds scapula to thoracic wall
12
Serratus Anterior nerve supply
long thoracic nerve
13
Subclavius origin
costal cartilage of rib 1
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Subclavius insertion
inferior border of clavicle
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Subclavius action
stabilizes clavicle
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Subclavius nerve supply
nerve to subclavius
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Scalenes origin
transverse processes of cervical vertebrae
18
Scalenes insertion
ribs 1 and 2
19
Scalenes action
elevation of ribs 1 and 2
flexion of cervical vertebrae
lateral flexion of cervical vertebrae
flexion of cervical vertebrae
lateral flexion of cervical vertebrae
20
Scalenes nerve supply
anterior rami of spinal nerves
21
Sternocleidomastoid origin
sternal head: manubrium
Clavicular head: medial clavicle
Clavicular head: medial clavicle
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Sternocleidomastoid insertion
mastoid process
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Sternocleidomastoid action
flexion of neck
ipsilateral flexion of neck and contralateral rotation of neck
ipsilateral flexion of neck and contralateral rotation of neck
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Sternocleidomastoid nerve supply
Cranial nerve XI
25
Platysma origin
fascia over upper chest
26
Platysma insertion
mandible
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Platysma action
tension of skin on neck
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Platysma nerve supply
Cranial nerve VII
29
External Intercostals origin
Inferior margin of rib above
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External Intercostals inserton
superior margin of rib below
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External Intercostals action
elevates ribs during inspiration
32
External Intercostals nerve supply
intercostal nerves
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Internal Intercostal origin
superior margin of rib below
34
Internal Intercostal insertion
inferior margin of rib above
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Internal Intercostal action
depresses ribs during forced expiration
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Internal Intercostal nerve supply
intercostal nerves
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