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Anatomy Lab- Week 2
Vertebral Column/ Post. Cervical Triangle/ Scapular Region
35
Medical
Professional
08/14/2011

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Cards

Term
vertebral canal
Definition
bony tube formed by stacked vertebral foramina
Term
spinal cord
Definition
part of CNS from foramen magnum to level of ~L2
Term
spinal meninges
Definition
membranes of the spinal cord (dura mater, arachnoid mater, and pia mater)
Term
cervical enlargement
Definition
widening of spinal cord between C4 and T1; provides nerves to the upper limbs
Term
lumbar enlargement
Definition
widening of spinal cord between L2 and S3; provides nerves to the lower limbs
Term
breakdown of spinal nerves
Definition
8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal
---
31 total
Term
vertebral laminae
Definition

[image]

two broad plates extending dorsally and medially from the pedicles; fuse to form the "roof" of the vertebral column

Term
ligamenta flava (sing ligamentum flavum)
Definition

[image]

ligaments which connect the laminae of adjacent vertebrae

Term
vertebral venous plexuses
Definition
valveless veins that permit flow based on blood pressure; can serve as routes for metastasis; lie between dura mater and vertebrae
Term
conus medullaris
Definition
end of the spinal cord; in adults located between L1 and L2
Term
filum terminale
Definition
internum: extension of pia mater to S2, encircled by dural sac
externum: continues extension of pia mater from S2 until attaching to coccyx, anchoring spinal cord
Term
dural sac
Definition
membranous sac of dura mater that envelopes the spinal cord and ends at S2
Term
cauda equina
Definition
collection of ventral and dorsal roots extending past the cona medullaris
Term
subarachnoid space
Definition
space in between arachnoid mater and pia mater, contains CSF
Term
denticulate ligaments
Definition
laternal extensions of pia mater that attach to dura mater
Term
lumbar puncture
Definition
performed inferiorially to cona medullaris to alleviate risk of puncturing spinal cord
Term
dorsal root ganglia
Definition
also "spinal ganglia"; nodule medial to spinal nerve the contains the cell bodies of the dorsal, sensory, afferent nerves
Term
posterior cervical triangle
Definition
triangle w/ boundaries: post. border of SCM muscle, ant. border of trap, middle 1/3 clavicle
Term
carotid sheath
Definition
houses the internal jugular vein, vagus nerve (CN X), and carotid artery
Term
platysma muscle
Definition
located in superficial fascia of the neck; innervated by facial cranial nerve (CN VII); covers SCM muscle
Term
external jugular vein
Definition
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Term
nerves of the posterior cervical triangle
Definition
Tulane Girls Like Aldo Shoes.
Transverse Cervical
Greater Auricular
Lesser Occipital
Accessory
Supraclavicular
Term
deltoid
Definition
O: scapular spine, acromion, lat. 1/3 of clavicle I: deltoid tuberosity of humerus
A: adducts humerus
N: axillary nerve
Term
supraspinatus
Definition
O: supraspinous fossa I: greater tuberosity of humerus
N: suprascapular nerve
A: abduction, stabilization
Term
infraspinatus
Definition
O: infraspinous fossa I: middle facet of greater tubercle of humerus
N: suprascapular nerve
A: lateral rotation, stabilization
Term
teres minor
Definition
O: lateral border of scapula I: inferior facet- greater tubercle of humerus
A: lat. rotation of humerus
N: axillary nerve
Term
teres major
Definition
O: inferior angle of scapula I: medial lip of intertubercular sulcus of humerus
A: adducts, med. rotates humerus
N: lower subscapular C6-7
Term
subscapularis
Definition
O: subscapular fossa I:lesser tubercle of humerus
N: upper subscapular, lower subscapular nerve C5-6
A: stabilizes shoulder, medially rotates humerus
Term
quadrangular space
Definition
anatomical reference point through which the axillary nerve/post. circumflex humeral artery comes; borders: inf border of teres minor, surgical neck of humerus, long head of triceps brachii, sup border of teres major
Term
AXILLARY nerve
Definition
branch of brachial plexus; passes through quadrangular space along w/ post. humeral circumflex artery
innervates 3 muscles: deltoid, teres minor, triceps brachii
Term
ACCESSORY nerve
Definition
cranial nerve XI, also "spinal accessory nerve"
motor innervation to sternocleidomastoid muscle, trapezius
Term
suprascapular artery
Definition
deep to supraspinatus; passes over the superior transverse scapular ligament; blood supply to infra-/supraspinatus; originates from thyrocervical trunk
Term
suprascapular nerve
Definition
deep to deep to supraspinatus; passes under the superior transverse scapular ligament; innervates infra-/supraspinatus; originates from the upper trunk of the brachial plexus
Term
superior transverse scapular ligament
Definition
ligament over scapular notch
Term
4 rotator cuff muscles
Definition
supraspinatus, infraspinatus, teres minor, subscapularis
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