Lab Exam 1: Origins/Insertions Flashcards
Trapezius Origin
- Medial 1/3 of superior nuchal line
- EOP
- Nuchal ligament
- SPs of C7-T12
Trapezius Insertion
- Lateral 1/3 of clavicle
- Acromion
- Scapular spine
Trapezius Innervation
- Spinal accessory nerve CN XI (motor)
- C3,4 spinal nerves (pain and proprioception)
Latissimus Dorsi Origin
- SPs of T7-L5
- Thoracolumbar fascia
- Iliac crest
- Inferior 3 or 4 ribs
- Inferior angle of the scapula
Latissimus Dorsi Insertion
- Humerus (floor of intertubercular sulcus)
Latissimus Dorsi Innervation
- Thoracodorsal nerve
Levator Scapulae Origin
- Posterior tubercles of C1-4 TPs
Levator Scapulae Insertion
- Medial scapular border
- Superior angle of scapula
Levator Scapulae Innervation
- Dorsal scapular nerve (C4,5) – motor
- C3,4: proprioception
Rhomboid Minor/Major Origin
- Nuchal ligament
- C7 – T5 SPs
Rhomboid Minor/Major Insertion
- Medial scapular border
Rhomboid Minor/Major Innervation
- Dorsal scapular nerve (C4,5) – motor
- C3,4: proprioception
Serratus Posterior Superior Origin
- Spinous processes of C7 – T3
- Ligamentum nuchae
Serratus Posterior Superior Insertion
- Ribs 2-5 (superior border)
Serratus Posterior Superior Innervation
- Anterior rami T2 – T5
Serratus Posterior Inferior Origin
- SPs of T11 – L2
Serratus Posterior Inferior Insertion
- Lower 4 ribs (9-12 inferior borders)
Serratus Posterior Inferior Innervation
- Anterior rami T9 – T12
Splenius Capitis Origin
- Ligamentum nuchae
- SPs of C7 - T6
Splenius Capitis Insertion
- TPs of C1 - C3
- Mastoid process
- Lateral 1/3 of superior nuchal line of occipital bone
Splenius Capitis Innervation
- Dorsal rami of cervical (middle)
Splenius Cervicis Origin
- SPs of T3 - T6 (SPs of C7 - T6 if including capitis)
Splenius Cervicis Insertion
- TPs of C1 - C3
- Mastoid process
Splenius Cervicis Innervation
- Dorsal rami of cervical nerves (middle)
Spinalis Origin
- Median sacral crest
- Posterior surface of sacrum
- Lumbar SPs and lower thoracic SPs
- Medial part of iliac crest
Spinalis Insertion
- SPs of thoracic and cervical regions
Spinalis Innervation
- Dorsal rami of cervical nerves (lower)
Longissimus Origin
- Median sacral crest
- Posterior surface of sacrum
- Lumbar SPs and lower thoracic SPs
- Medial part of iliac crest
Longissimus Insertion
- Between tubercles and angles of ribs
- TPs of thoracic and cervical regions
Longissimus Innervation
- Dorsal rami of cervical nerves (lower)
Iliocostalis Origin
- Median sacral crest
- Posterior surface of sacrum
- Lumbar SPs and lower thoracic SPs
- Medial part of iliac crest
Iliocostalis Insertion
- Angles of lower ribs
- TPs of cervical region
Iliocostalis Innervation
- Dorsal rami of cervical nerves (lower)
Rectus Capitis Posterior Major Origin
- SP of C2 (axis)
Rectus Capitis Posterior Major Insertion
- Lateral inferior nuchal line of occipital bone
Rectus Capitis Posterior Major Innervation
- Dorsal ramus C1
Rectus Capitis Posterior Minor Origin
- Posterior tubercle of C1 (atlas)
Rectus Capitis Posterior Minor Insertion
- Medial inferior nuchal line of occipital bone
Rectus Capitis Posterior Minor Innervation
- Dorsal ramus C1
Obliquus Capitis Superior Origin
- TP of C1 (atlas)
Obliquus Capitis Superior Insertion
- Between lateral aspect of superior and inferior nuchal lines of occipital bone
Obliquus Capitis Superior Innervation
- Dorsal ramus C1
Obliquus Capitis Inferior Origin
- SP of C2 (axis)
Obliquus Capitis Inferior Insertion
- TP of C1 (atlas)
Obliquus Capitis Inferior Innervation
- Dorsal ramus C1
Breast Cutaneous Innervation
- 2nd - 6th intercostal nerves
- Lateral and anterior branches
Nipple Innervation
- Specifical the 4th intercostal nerve
- Ventral ramus of T4
Pectoralis Major Origin
- Medial 1/2 of clavicle
- Anterior sternum
- Upper 6 costal cartilages
- Aponeurosis of external oblique muscle
Pectoralis Major Insertion
- Lateral lip of intertubercular sulcus
Pectoralis Major Innervation
- Lateral and medial pectoral nerves
Pectoralis Minor Origin
- Ribs 3-5
Pectoralis Minor Insertion
- Coracoid process of scapula
Pectoralis Minor Innervation
- Medial pectoral nerve
Subclavius Origin
- Rib 1
- Costal cartilage junction
Subclavius Insertion
- Inferior middle 1/3 of clavicle
Subclavius Innervation
- Nerve to subclavius
Serratus Anterior Origin
- Anterior surface of medial scapular border
Serratus Anterior Insertion
- Lateral aspect of ribs 1-9
Serratus Anterior Innervation
- Long thoracic nerve
Subscapularis Origin
- Subscapular fossa
Subscapularis Insertion
- Lesser tubercle of the humerus
Subscapularis Innervation
- Upper and lower subscapular nerve
Teres Major Origin
- Inferior angle of the scapula
Teres Major Insertion
- Medial lip of intertubercular sulcus
Teres Major Innervation
- Lower subscapular nerve
All Intercostal Muscle Superior Attachments
- Inferior border of rib above
All Intercostal Muscle Inferior Attachments
- Superior border of the rib below
All Intercostal Muscle Innervation
- Intercostal nerves
Transversus Thoracis Origin
- Inner surface of sternum
Transversus Thoracis Insertion
- Costal cartilages of ribs 2-6