Intramuscular & Extraocular Muscles Quiz

32 Questions | By Taliatunstill95 | Last updated: Sep 15, 2020 | Total Attempts: 1625

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Intramuscular & Extraocular Muscles Quiz

Take this quiz and learn more about the extra ocular muscles and their innervation in a patient who periodically.

Questions and Answers

1.

Which of the following are intraocular muscles? (pick 2)
- A.
  
  Ciliary muscle
- B.
  
  Pupil
- C.
  
  Iris
- D.
  
  Tarsal muscle
2.

Which of the following are Extraocular muscles?
- A.
  
  Two Oblique Muscles
- B.
  
  Ciliary Muscle
- C.
  
  Four Rectus Muscles
- D.
  
  Levator palpebrae superioris
- E.
  
  Muller's muscle
- F.
  
  One Oblique muscle
3.

Which EOMs depress the eye? (Select 2 answers)
- A.
  
  IO
- B.
  
  IR
- C.
  
  LR
- D.
  
  MR
- E.
  
  SO
- F.
  
  SR
4.

Which EOM is the main extortor?
- A.
  
  IO
- B.
  
  IR
- C.
  
  LR
- D.
  
  MR
- E.
  
  SO
- F.
  
  SR
5.

Which EOMs abduct the eye? (Select 3 answers)
- A.
  
  IO
- B.
  
  IR
- C.
  
  LR
- D.
  
  MR
- E.
  
  SO
- F.
  
  SR
6.

Which EOMs depress the eye from an adducted position?
- A.
  
  IO
- B.
  
  IR
- C.
  
  LR
- D.
  
  MR
- E.
  
  SO
- F.
  
  SR
7.

Actions of right IO and left SR are tested in?
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
8.

Which of the following describes the primary gaze? (Pick 2)
- A.
  
  The superior (and inferior)oblique forms a 54 degree angle with the visual axis
- B.
  
  The superior (and inferior)oblique forms a 23 degree angle with the visual axis
- C.
  
  The superior (and inferior) rectus forms a 23 degree angle with the visual axis
- D.
  
  The superior (and inferior) rectus forms a 54 degree angle with the visual axis
9.

If the eye is adducted the superior oblique is the only EOM that depresses the eye
- A.
  
  True
- B.
  
  False
10.

When the eye is adducted about 67 degrees what is the only action of the vertical recti EOMs (SR and IR)
- A.
  
  Torsion
- B.
  
  Elevation
- C.
  
  Depression
- D.
  
  There is more than one action
11.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
12.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
13.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
14.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
- I.
  
  RLR
- J.
  
  RMR
- K.
  
  LLR
15.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
- I.
  
  RLR
- J.
  
  RMR
- K.
  
  LLR
16.

What Muscles are involved?
- A.
  
  RSR
- B.
  
  LIO
- C.
  
  RIO
- D.
  
  LSR+LIO
- E.
  
  RSR+RIO
- F.
  
  LSO
- G.
  
  LMR
- H.
  
  LSR
- I.
  
  RLR
- J.
  
  RIR
- K.
  
  LLR
17.

Which muscles are used? (Pick 2)
- A.
  
  RIR+RSO
- B.
  
  LIR+LSO
- C.
  
  RSO
- D.
  
  LSO
- E.
  
  LIR
- F.
  
  RIR
- G.
  
  LMR
- H.
  
  RMR
18.

Which muscles are used? (Pick 2)
- A.
  
  RIR+RSO
- B.
  
  LIR+LSO
- C.
  
  RSO
- D.
  
  LSO
- E.
  
  LIR
- F.
  
  RIR
- G.
  
  LMR
- H.
  
  RMR
19.

What applies to the medial rectus?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN VI
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extosion
- H.
  
  Intorsion
20.

What applies to the lateral rectus?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN VI
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extosion
- H.
  
  Intorsion
21.

What applies to the superior rectus?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN VI
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extosion
- H.
  
  Intorsion
22.

What applies to the inferior rectus?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN VI
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extosion
- H.
  
  Intorsion
23.

What applies to the superior oblique?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN IV
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extosion
- H.
  
  Intorsion
24.

What applies to the inferior oblique?
- A.
  
  Adduction
- B.
  
  CN III
- C.
  
  CN IV
- D.
  
  Elevation
- E.
  
  Abduction
- F.
  
  Depression
- G.
  
  Extorsion
- H.
  
  Intorsion
25.

What is the origin of the 4 recti muscles?
- A.
  
  Annulus of Zinn
- B.
  
  Sclera
- C.
  
  Anterior aspects of bony orbit (medial wall close to the nasolacrimal canal)
- D.
  
  None of the above

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