Lab Practical 1 Flashcards
intervertebral foramina
where spinal nerves pass from the spinal cord to the periphery
vertebral canal
encloses and protects spinal cord
supraspinous and interspinous ligaments
attach spines of adjacent vertebrae
ligamentum flavum
present on inner aspect of vertebral arch
posterior longitudinal ligament
runs along posterior aspect of vertebral bodies and limits hyperflexion of vertebral column
anterior longitudinal ligament
runs along anterior aspect of vertebral bodies and limits hyperextension of vertebral column
conus medullaris
occurs at level of L1 or L2; distal tapering of spinal cord
spinal nerves
31 pairs
cauda equina
“tail of horse”
loose collection of ventral and dorsal roots from lumbar and sacral spinal nerves inferior to the conus medullaris
filum terminale
center of cauda equina; a filament continuous with pia mater. anchors spinal cord to sacrum
dorsal and ventral rootlets
pierce the dura and enter intervertebral foramen as ventral and dorsal roots
spinal ganglion/dorsal root ganglion
will be proximal to the ventral and dorsal roots
ventral and dorsal rami
divisions of spinal nerve
trapezius
has fibers running in 3 directions
spinal accessory nerve (Cranial nerve XI)
innervates trapezius
rhomboid major and minor and levator scapulae
attached to medial edge of scapulae and innervated by branches of dorsal scapular nerve
serratus anterior
attaches to medial border of scapula near rhomboids and runs anteriorly and inferiorly to rubs 1-8
subscapularis
lies between serratus anterior and scapula
latissimus dorsi
slanting upward from vertebral column
thoracodorsal nerve and artery
neurovascular bundle embedded in fate on the deep surface of the latissimus dorsi
I Love Spaghetti
lateral to medial for erector spinae muscles (intrinsic back muscles)
iliocostalis, longissmus and spinalis
deltoid muscle
innervated by axillary nerve
infraspinatus
innervated by suprascapular nerve
posterioal humeral circumflex artery
found on the deep surface of the deltoid along with the axillary nerve
supraspinatus
innervated by the suprascapular nerve
teres minor
found inferior to infraspinatus and superior to teres major
teres major
found inferior to teres minor and runs behindlong head of triceps brachii and the humerus
rotator cuff muscles
subscapularis, teres minor, supraspinatus and infraspinatus
long head of triceps
passes between teres minor and major. On the medial side of the posterior arm
lateral head of triceps brachii
lateral on posterior arm
medial head of triceps brachii
found between long head and lateral head.
triceps muscle
innervated by radial nerve and supplied by deep brachial artery
suprascapular ligament
covers the suprascapular notch, which is on the superior border of the scapula
cephalic vein
found in the deltopectoral triangles between the deltiod and clavicular head of pectoralis major
pectoralis minor
runs deep to pectoralis major
medial pectoral nerve
innervates the pectoralis minor
lateral pectoral nerve
along with medial pectoral nerve innervates pectoralis major
short head of biceps brachii
medial side of anterior arm
corachobrachialis
medial side of anterior arm, deep to short head of biceps brachii
long head of biceps brachii
lateral side of anterior arm
bicipital groove
on the humerus, where the long head of biceps brachii runs
bicipital aponeurosis
on medial side of bicipital tendon, where it attaches to the deep fascia of the forearm
musculocutaneous nerve
innervates the anterior compartment of arm and is found entering the posterior medial aspect of the coracobrachialis
lateral cutaneous nerve of the forearm
a continuation of the musculocutaneous nerve in the forearm. it is purely sensory
brachial artery
found on medial aspect of the arm along with the median and ulnar nerves
deep brachial artery
branch off the brachial artery that supplies the posterior compartment of the arm
glenoid labrum
fibricartilagenous extension of glenoid fossa
axillary artery
continuation of subclavian artery; begins where subclavian crosses over the first rib