week 1 anatomy Flashcards
A: extends, adducts, and medially rotates humerus
N: thoracodorasal N (c6, 7 ,8)
latissimus Dorsi
A: extends head, elevates and pulls shoulder posteriorly, stabilization and movement of the scapula
N: moto innervation CN XI (spinal accessory nerve
Trapezius
A: scapula elevation
N:dorsal scapular nerve
Levator Scapulae
A: rotation of the scapula, rotation of the glenoid cavity
N: dorsal scapular nerve
Rhomboid major
A: retraction and elevation of the scapula
N: dorsal scapular nerve
Rhomboid Minor
Accessory nerve (CNXI)
transverse cervical artery
trapezius
A: elevates the ribs
N: intercostal nerves
serrates posterior superior
A:depresses the ribs
N: intercostal nerves
serrates posterior inferior
A: primary extensor of the back, contributes to stabizaltion of lateral rotation, and flexion of the vertebral column
N: posterior rami of spinal nerves
Erector Spinae
Parts of the Erector Spinae
iliocostalis
longissimis
spinalis
__ cervical
__ thoracic
__ lumbar
__ sacrum
__ coccyx
7
12
5
5
3-4
33 total
parts of the vertebrae
- body
- arch
- pedicle
- transverse process
- superior vertebral notch
- inferior vertebral notch
- lamina
- spinous process
parts of the cervical vertebrae
C1: atlas (foramen transversum )
C2: axis (dens)
gradual loss of bone density and strength, collapse of the thoracic vertebrae
osteoporosis
The pia mater covering the spinal cord is relatively thick and gives rise to longitudinal projections known as
denticulate
ligaments
anchors the conus medullaris to the caudal end of the spinal dural sheath
filum terminale
layers in order of the spinal cord
-bone
- epidural space
- dura matter
- subdural space
- arachnoid mater
- subarachnoid space
- pia mater
gray matter of the spinal cord?
rich in nerve cell bodies
white matter of the spinal cord?
rich in nerve cell process and tracts
dorsal is?
sensory
ventral is?
motor
parts of the humerus
-greater tubercle
- lesser tubercle
-humeral head
-intertubercular sulcus
- radial groove
parts of the posterior part of the scapula
-spine of scapula
-supraspinous fossa
- infraspinous fossa
- acromion
-acromion
-coracoid process
- subscapular fossa
anterior view of the scapula
-supraspinous fossa
-spine fo the scapula
-acromion
-infraspinous fossa
posterior view of the scapula
two ends of the clavical?
acromial end
sternal end
joint between the humerus and the scapula?
glenohumeral joint
glenohumeral joint is a what kind of joint?
ball and socket
the _________________________ make up the fibrous membrane of the joint capsule (humerus and scapula)
capsular ligament
the humeral head is ___ times larger than the glenoid cavity on the scapula
four times
what is the function of the glenoid labrum?
it adds stabilization of the glenohumeral joint between the humerus and the scapula
ARM moving forward
flexion
ARM moving backward
extension
what muscles are primarily response for adduction the arm
axillary fold muscles
- latissimus dorsi
- pectorallis major
- teres major
A: flexion of the arm and rotates it medially, abduction of the arm, extension and later rotation of the arm
N: Axillary n
deltoid m
A: protraction and rotation of the scapula holds it against thoracic wall
N: long thoracic n
serratus anterior m
A: adducts and medially rotates humerus
N: lower subscapular n
teres major m
A: external (lateral) rotation and adduction of the arm at the shoulder joint, stabilization of the glenoid cavity (rotator cuff muscle)
n: axillary n.
teres minor m
A: abduction initiation of arm to 15 degrees at glenohumeral joint (rotator cuff muscle)
N: subrascapular n
supraspinatus m
A: external (lateral) rotation of the arm at the shoulder joint, stabilizes the glenoid cavity (rotator cuff muscle)
N: suprascapular n
infraspinatus m
A: medially rotates arm, stabilizes humeral head in glenoid cavity ( rotator cuff muscle)
N: upper and lower subscapular nerves ( C5, 6, 7)
subscapularius m
teres minor
supraspinatus m
infraspinatus m
subscapularis m
rotator cuff muscles
rotator cuff is also known as the ?
tendinous cuff
actions of the glenhumeral joint?
0-15 degrees supraspinatus m
15-90 degrees deltiod m
90-180 degrees serratus anteriro m
at 90 degrees of the glenohumeral joint?
the humerus bumps into the acromion so then the scapular rotation takes place
- suprascapular artery
-superior transverse ligament
the scapular and circumflex arteries
-the army goes over and then navy goes under the bridge
quadrangular space
triangular space
triangular interval
spaces and gateways of the scapular region
-axillary n.
-posterior circumflex humoral a.
quadrangular space
-circumflex scapular a.
-circumflex scapular v.
triangular space
-profunda brachii a.
- Radial n.
triangular interval
By reflecting the
pectoralis major m. and
the pectoralis minor m.,
this?
gains access to the
axilla, the location of the
brachial plexus
A: adducts and medially rotates humerus, draws scapula anteriorly and inferiorly ( clavicular head alone flexes humerus and sternocostal head extends it from flexed position)
N: later and medial pectoral nerves ( C 5, 6,7,8 T1)
pectoralis major m
A: draws scapula inferiorly and anteriorly against the thoracic wall, stabilizes scapula
N: medial pectoral nerve (C8, T1)
pectoralis Minor m
