Exam 1 Flashcards
What are the four types of action control
schema, eye gaze control, visual perception information, and motor contor of limb and body
Recall some important functions of eye movements
- retinal smearing: prevents motion blur
- visual acuity: allows fine spatial vision
- provides depth perception
- assistes in social interactions
What are schor’s 3 functional categories
- stabilization of gaze for environment
- foveal gaze lock for objects
- foveal gaze shifts
What ate classes of eye movements for stabilization of gaze for environment
vestibulo-ocular, cervico-ocular, and optokinetic
What are classes for foveal gaze lock for objects
fixational, pursuit, smooth vergence,
What are classes for foveal gaze shift
saccades and step vergence
What are major bony and tissue structures of orbit that interacts with extraocular muscle
spehnoid bone, frontal bone, maxillary bone, trochlea, and common ring tendon
Which EOM has CRT as anatomical origin
MR, LR, SR, IR, and SO
Which EOM has muscle pulley at function of origin
MR, LR, SR, IR and IO
Insertion of MR
spiral of tillaux; 5.3 mm from limbus
Insertion of LR
spiral of tillaux; 6.9 mm from limbus
drInsertion of SR
spiral of tillaux; 7.9 mm from limbus
Insertion of IR
spiral of tillaux; 6.8 mm from limbus
Insertion of SO
sclera posterior of center of rotation
Insertion of IO
sclera posterior to center of rotation on temporal side of eyeball
Insertion of LPS
tarsal plate and skin of upper lid
Anatomical origin of IO
on maxillary bone posterior to lower orbital rim and lateral to nasolacrimmal fossa
Anatomical origin of LPS
superior and anterior to optic foramen on sphenoid bone
Function at origin of SO
trochlea
Function at origin of LPS
superior transverse ligament
Angle with line of sight of SR
23
Angle with line of sight of IR
23
Angle with line of sight of SO
51-55
Angle with line of sight of IO
51
Which EOM have cranial nerve III innervation
MR, IR , IO (inferior division), and SR and LPS (superiorn division)
Cranial nerve innervation for LR
VI
