Lecture 10 eye movement relationships

what is the primary agonist for adduction of the extraocular muscles

medial rectus

what is the primary agonist for abduction of the extraocular muscles

lateral rectus

what is the primary agonist for elevation/supraduction of the extraocular muscles

superior rectus

what is the primary agonist for depression/infraduction of the extraocular muscles

inferior rectus

what is the primary agonist for intorsion of the extraocular muscles

superior oblique

what is the primary agonist for extorsion of the extraocular muscles

inferior oblique

 the medial rectus is the antagonist muscle of which muscle in the same eye during abduction

lateral rectus

 the lateral rectus is the antagonist muscle of which muscle in the same eye during adduction

medial rectus

what is the antagonist pair for horizontal eye movements

lateral rectus and medial rectus

what is the antagonist pair for vertical eye movements

superior rectus and inferior rectus

the superior rectus is the antagonist muscle of which muscle in the same eye during depression

inferior rectus

the inferior rectus is the antagonist muscle of which muscle in the same eye during elevation

superior rectus

what is the antagonist pair for torsional eye movements

superior oblique and inferior oblique

the inferior oblique is the antagonist muscle of which muscle in the same eye during intorsion

superior oblique

the superior oblique is the antagonist muscle of which muscle in the same eye during extorsion

inferior oblique

what are the synergistic muscles during elevation from primary gaze

superior rectus and inferior oblique

what are the synergistic muscles during depression from primary gaze

superior oblique and inferior rectus

what are the synergistic muscles for adduction (think about secondary and tertiary gaze)

medial rectus, superior rectus, inferior rectus

what are the synergistic muscles for abduction (think about secondary and tertiary gaze)

lateral rectus, superior oblique, inferior oblique

what are the synergistic muscles for intorsion (think about secondary and tertiary gaze)

superior oblique and superior rectus

what are the synergistic muscles for extorsion (think about secondary and tertiary gaze)

inferior oblique and inferior rectus

what is the yoked muscles for the right gaze

right lateral rectus and left medial rectus

hat is the yoked muscles for the left gaze

left lateral rectus and right medial rectus

hat is the yoked muscles for the elevated (right and up) gaze

right superior rectus and left inferior oblique

hat is the yoked muscles for the elevated (right and left) gaze

right inferior oblique and left superior rectus

hat is the yoked muscles for the depressed (right and down) gaze

right inferior rectus and left superior oblique

what is the yoked muscles for the depressed (left and down) gaze

right superior oblique and left inferior rectus

according to the Sherrington’s Law of Reciprocal Innervation, what is the agonist and antagonist muscle respectively when you look to the right

right lateral rectus, right medial rectus

according to the Sherrington’s Law of Reciprocal Innervation, what is the agonist and antagonist muscle respectively when you look to the left

left lateral rectus, left medial rectus

for an antagonist pair, where do the eye muscles of the single eye move

in opposite directions

which eye movement relationship concerns both eyes

yoked muscles

Right Lateral Rectus & Left Medial Rectus work together to look to the right is an example of which law

Hering's Law of Equal Innervation

left Lateral Rectus & right Medial Rectus work together to look to the left is an example of which law

Hering's Law of Equal Innervation

Right Superior Rectus & Left Inferior Oblique work together to look up and to the right is an example of which law

Hering's Law of Equal Innervation

left Superior Rectus & right Inferior Oblique work together to look up and to the left is an example of which law

Hering's Law of Equal Innervation

right inferior rectus & left superior oblique work together to look down and to the right is an example of which law

Hering's Law of Equal Innervation

left inferior rectus & right superior oblique work together to look down and to the left is an example of which law

Hering's Law of Equal Innervation

define Hering's Law of Equal Innervation

“Yoked” muscles receive equal and simultaneous innervation

define Sherrington’s Law of Reciprocal Innervation

Whenever an agonist receives an impulse to contract, an equivalent inhibitory impulse is sent to its antagonist

according to the Sherrington’s Law of Reciprocal Innervation, what is the agonist and antagonist muscle respectively when looking up

superior rectus/inferior oblique and inferior rectus/superior oblique

according to the Sherrington’s Law of Reciprocal Innervation, what is the secondary agonist and antagonist muscle respectively when looking down

inferior rectus/superior oblique and superior rectus/inferior oblique

according to the Sherrington’s Law of Reciprocal Innervation, what is the primary agonist and antagonist muscle respectively when looking to the right

right lateral rectus and right medial rectus

according to the Sherrington’s Law of Reciprocal Innervation, what is the primary agonist and antagonist muscle respectively when looking out and left

left lateral rectus and left medial rectus