Rec 01 Intro & Back

blunt dissection

separate tissues, organs, or structures along their natural anatomical planes without cutting them

sharp dissection

separation or cutting of tissues using clean, sharp-edged instruments

scissors technique

clean

remove remaining connective tissue

define

requires blunt dissection to separate out the muscles

retract

holding or moving tissues, muscles, or organs aside to expose deeper structures w/out cutting them

transect

cut or divide a body structure, organ or tissue transversely or straight across its path

reflect

cutting it at one or more attachment points while leaving at least one attachment intact so it can be folded or moved aside to reveal deeper layers

sagittal

divides left from right

transverse

divides superior from inferior

frontal (coronal)

divides anterior from posterior

supine

face up

prone

face down

acromion

coracoid process

supraspinous fossa

spine

infraspinous fossa

medial (vertebral) border

lateral (axillary) border

cervical vertebrae (7)

• C1: atlas

• C2: axis

thoracic vertebrae (12)

lumbar vertebrae (5)

sacral vertebrae (5)

coccyx (4 fused vertebrae)

Trapezius O:

nuchal ligament, superior nuchal line, external occipital protuberance, spinous processes C7-T12

Trapezius I:

Lateral clavicle, acromion & spine of scapula

Trapezius motor innervation

spinal accessory n. (CN XI)

spinal acessory nerve (and branches)

innervates trapezius & sternocleidomastoid

Latissimus Dorsi O:

SP T7-L5, thoracolumbar fascia, sacrum, ilia crest, ribs

thoracolumbar fasci

thick broad connective tissue layer

Latissimus dorsi I:

floor/distal part of intertubercular groov of humerus

Latissimus dorsi innervation

thoracodorsal n.

thoracodorsal nerve

• part of brachial plexus

• deep to latissimus dorsi

• motor innervation to latissimus dorsi

rhomboid major O:

SP T2-T5

rhomboid major I:

medial border of scapula (below spine)

rhomboid minor O:

nuchal ligament, SP C7-T1

rhomboid minor I:

medial border of scapula (at spine)

rhomboid major & minor innervation

dorsal scapular n.

dorsal scapular nerve

innervates rhomboid major & minor, levator scapulae

Levator Scapula O:

TP (traverse process) C1-C4

Levator Scapulae I:

medial border of scapular (overs spine)

levator scapula innervation:

dorsal scapular nerve

triagle of ausculation

bounded by trapezius, rhomboid major/scapula, and latissimus dorsi

Serratus posterior superior O:

Nuchal ligament, SP C7-T3

Serratus posterior superior I:

Ribs 2-5

Serratus Posterior inferior O:

SP T11-L2

Serratus Posterior inferior I:

Ribs 9-12

Spenius capitis O:

Nuchal ligament, SP C3-T3

Splenius capitis I:

mastoid process, occipital bone

semispinalis capitis innervations:

Greater Occipital Nerve, 3rd cervical nerve

Spenius cervicis O:

SP T3-T6

Splenius cervicis I:

TP C1-C3

semispinalis cervicis innervation:

lower cervical upper thoracic nerves

greater occipital nerve (GON) motor innervation:

probably semispinalis capitis, possibly obliquus capitis inferior

greater occipital nerve sensory innervation:

posterior scalp & dura mater

spinalis thoracic O:

SP T11-L3

spinalis thoracis I:

SP T2-T8

spinalis thoracic innervation:

thoracic & lumbar nerves

erector spinae muscles share common apoenurosis

erector spinae tendon

longissimus O:

SP L1-L5, sacrum, iliac crest

longissimus I:

TP thoracic & lumbar

longissimus innervation:

thoracic & lumbar nerves

iliocostalis O:

ribs 7-17, sacrum

iliocostalis I:

ribs 1-6

iliocostalis innervation

thoracic & lumbar nerves

transversospinales

originate from transverse processes & insert onto spinous process

multifidius O:

sacrum, porsterior superior ilia spine, mammillary process of lumbar vertebrae, TP T1-T12 and articular process C4-C7

multifidus I:

SP of vertebrae

rotatores