Lecture 1: Superficial & Deep Back Flashcards
What are the 3 surface anatomy landmarks for the back?
- Vertebra prominens
- Iliac crests
- Spine fo scapula
What are the 4 regions of the back?
Cervical
Thoracic
Lumbar
Sacral
What type of fascia is the hypodermis?
Superficial fascia
Fascia is ________ tissue.
Connective
From superficial to deep describe the path a blade takes from skin to muscle.
- Skin
- Superior fascia
- Deep fascia
- Muscle
What fascia surrounds muscle groups (& skeletal muscle fibers, fascicles)
Deep fascia
What kind of fascia is thoracolumbar fascia?
Deep fascia
List the 5 extrinsic muscles of the back.
extrinsic = superficial
1. Trapezius
2. Latissimus Dorsi
3. Levator scapulae
4. Rhomboid Major
5. Rhomboid Minor
What is the innervation of the trapezius?
CN XI: Accessory
What is the innervation of the Levator scapulae?
Brachial Plexus
Rhomboids - innervation
Brachial Plexus
Latissimus Dorsi - innervation
Brachial Plexus
What muscles are mostly innervated by anterior rami of cervical spinal nerves?
Extrinsic (superficial) back muscles
What is the main action of extrinsic (superficial) back muscles?
Moving upper limb
What is the innervation of the intermediate back muscles?
Intercostal nerves
What is the function of intermediate back muscles?
Rib movement during respiration
What are the 2 intermediate back muscles?
- Serratus posterior superior
- Serrartus posterior inferior
What is the innervation of the deep (intrinsic) back muscles [motor]?
Posterior rami of spinal nerves
What are the further divisions of the deep back muscles? What muscles are in which group?
Superficial Deep - splenius
Intermediate Deep - erector spinae
Deepest Deep - Transversopinalis
Function of splenius muscles
Extend the neck
From lateral to medial, list the erector spinae muscles.
Iliocostalis
Longissimus
Spinalis
(ILS)
What muscles are in the transversospinalis grouping?
Multifidus
Semispinalis
Rotatores
What ligament is between spinous processes?
Interspinous
What ligament is between adjacent laminae?
Ligament flavum
