QuestionSBA
QuestionChoice
The image shows the posterior view of a model of the right orbit with the roof and lateral wall removed and the eyeball and associated muscles in view. The medial aspect of the orbit is towards the left of the image because the optic chiasm is towards the left and it is normally found in the midline. Eyeball adduction is a function of the medial rectus muscle, which is not immediately visible in the image, as it shows a posterolateral view of the eyeball in the orbit. However, the blue arrow indicates the lateral rectus muscle, whose action is to abduct the eyeball.
10041587
b
Eyeball adduction
QuestionChoice
The image shows the posterior view of a model of the right orbit with the roof and lateral wall removed and the eyeball and associated muscles in view. The medial aspect of the orbit is towards the left of the image because the optic chiasm is towards the left and it is normally found in the midline. Eyelid elevation is a function of the levator palpebrae superioris muscle, which is not visible in the image and which lies superior to the superior rectus muscle. However, the blue arrow indicates the lateral rectus muscle, whose action is to abduct the eyeball.
10041590
e
Eyelid elevation
QuestionChoice
The image shows the posterior view of a model of the right orbit with the roof and lateral wall removed and the eyeball and associated muscles in view. The medial aspect of the orbit is towards the left of the image because the optic chiasm is towards the left and it is normally found in the midline. The blue arrow indicates the lateral rectus muscle, whose action is to abduct the eyeball.
10041586
a
Eyeball abduction
QuestionChoice
The image shows the posterior view of a model of the right orbit with the roof and lateral wall removed and the eyeball and associated muscles in view. The medial aspect of the orbit is towards the left of the image because the optic chiasm is towards the left and it is normally found in the midline. Eyeball depression is a function of the inferior rectus muscle, which is not immediately visible in the image, as it shows a posterolateral view of the eyeball in the orbit. However, the blue arrow indicates the lateral rectus muscle, whose action is to abduct the eyeball.
10041589
d
Eyeball depression
QuestionChoice
The image shows the posterior view of a model of the right orbit with the roof and lateral wall removed and the eyeball and associated muscles in view. The medial aspect of the orbit is towards the left of the image because the optic chiasm is towards the left and it is normally found in the midline. Eyeball elevation is a function of the superior rectus muscle, which is visible running from the top of the eyeball. However, the blue arrow indicates the lateral rectus muscle, whose action is to abduct the eyeball.
10041588
c
Eyeball elevation
Concept
Chapter
2693
6289
Orbit
Topic
201
Head and neck anatomy
20616
Picture
3215
70 - Orbit (Lateral rectus).png
images/ipd0b5x01727764983519.jpg
images/ipd0b5x01727764983519_256.jpg
images/ipd0b5x01727764983519_512.jpg
4ygGDYLSS2aQU4eIhJqmhQyGhnA3
Topic
201
Head and neck anatomy
Identify the statement that correctly describes the function of the muscle indicated by the blue arrow in the following image:
[lightgallery]
a