exam 4: sense organ of vision Adnexa (34)

Question 1

The organ of vision: The orbit is known as

Answer 1

Adnexa

Question 2

Connects the zygomatic process of the frontal bone with the frontal process of the zygomatic bone

Answer 2

Orbital ligament

Question 3

what is the black arrow pointing to

Answer 3

Orbital ligament

Question 4

Muscle located dorsal in the orbit. Attaches within the superior eyelid structure.

Is the responsible to elevate the superior eyelid

Answer 4

Levator palpebrae superioris m

Question 5

Levator palpebrae superioris m is innervated by what CN

Answer 5

Oculomotor nerve (CN III)

Question 6

Levator palpebrae superioris m action

Answer 6

responsible to elevate the superior eyelid

Question 7

Form the main muscular structure of
the eyelids.

Close the aperture between the eyelid or palpebral fissure (Rima palpebral) “Blink”

Answer 7

Orbicularis oculi m.

Question 8

Orbicularis oculi m. is innervated by

Answer 8

branch of Facial nerve (CN VII)

Question 9

Orbicularis oculi m. action

Answer 9

Close the aperture between the eyelid or palpebral fissure (Rima palpebral) “Blink”

Question 10

Mucosa that covers the posterior surface of the eyelids

Answer 10

Palpebral conjunctiva

Question 11

Glands located posterior to the orbicularis oculi m

Answer 11

Tarsal glands (Meibomian glands)

Question 12

Tarsal glands produce an oiled substance (meibum), which coats the _________

Answer 12

tear film

Question 13

what are the 2 functions of the Tarsal glands

Answer 13

1. Prevent the evaporation of tears
   and from spilling onto the face
2. Traps tears between the eyeball and the oiled edge of the eyelid, and makes the eyelids airtight when closed

Question 14

identify the muscle

Answer 14

Levator palpebrae superioris m

Question 15

Blind sac between the palpebral
and bulbar conjunctiva

there is a superior and inferior

Answer 15

Fornix

Question 16

other name for Third eyelid

Answer 16

Nictitanting membrane

Question 17

what is this

Answer 17

Third eyelid (Nictitanting membrane)

Question 18

Answer 18

Question 19

Covers the surface of the sclera

Answer 19

Bulbar Conjunctiva

Question 20

Answer 20

Question 21

Periorbita also called

Answer 21

Orbital fascia

Question 22

Fascia that encapsule the extrinsic
muscles that moves the eye, periorbital adipose tissue, vessels and nerves

Answer 22

Periorbita (Orbital fascia)

Question 23

Answer 23

Periorbita (Orbital fascia)

Question 24

what makes up the adnexa (4)

Answer 24

• The eyelids and tunica conjunctiva
• Periorbita (Orbital fascia)
• The ocular muscles
• The lacrimal apparatus

Question 25

identify 1 and 2

Answer 25

1. Periorbita 2. Zygomatic gland

Question 26

what muscle is the green box on

Answer 26

Masseter m.

Question 27

what is the blue arrow pointing to

Answer 27

Periorbita

Question 28

Parasympathetic ganglion where preganglionic fibers from facial nerve (VII) synapse

Answer 28

Pterygopalatine ganglion

Question 29

Pterygopalatine ganglion parasympathetic or sympathetic? what CN is it associated with

Answer 29

Parasympathetic ganglion where preganglionic fibers from facial nerve (VII) synapse

Question 30

hint 3 and 4: one is an artery and one is a nerve

Answer 30

1.Ophthalmic v. 2. Periorbita 3. Maxillary nerve (V2) 4. maxillary artery 5. Pterygopalatine ganglion

Question 31

how many Extrinsic muscles of the eye are there

Answer 31

Question 32

identify 1-4

Answer 32

1.Dorsal rectus m. 2.Lateral rectus m. 3.Ventral rectus m 4.Medial rectus m (whatever muscle contracts is which way the eye/pupil moves)

Question 33

identify 1 and 2

Answer 33

1. Dorsal Oblique m. 2. Ventral oblique m.

Question 34

Dorsal rectus m. is innervated by

Answer 34

oculomotor nerve CN III

Question 35

Ventral rectus m. is innervated by

Answer 35

oculomotor nerve CN III

Question 36

identify the muscle being used

Answer 36

Dorsal rectus m (DR) **both are being contracted**

Question 37

identify the muscle being used

Answer 37

Ventral rectus m. (VR)

Question 38

Medial rectus m is innervated by CN _______

Answer 38

oculomotor nerve CN III

Question 39

Lateral rectus m. is innervated by

Answer 39

abducens nerve CN VI

Question 40

identify the muscles being used

Answer 40

Left LR is contracted RIght MR is contracted

Question 41

identify the muscles being used

Answer 41

Question 42

Dorsal oblique m. is innervated by

Answer 42

trochlear nerve CN IV

Question 43

Ventral oblique m. is Innervated by

Answer 43

oculomotor nerve CN III

Question 44

identify the muscles being used

Answer 44

Question 45

Muscle fibers located around the optic nerve. This muscle retract the eyeball into the orbit as result of a reflect.

Answer 45

Retractor bulbi m.

Question 46

Retractor bulbi m. is innervated by what CN

Answer 46

innervated by abducens n. (CN VI)

Question 47

identify 1-4

Answer 47

1. Dorsal Oblique tendon 2. Retractor bulbi m. 3. Optic nerve CN II 4. Ventral Oblique m.

Question 48

identify 1-4

Answer 48

1. Frontal n. Br of Ophthalmic n. V1 2. R dorsal 3. R lateral 4. R ventral

Question 49

identify 1 and 2

Answer 49

1. Opening of lacrimonasal duct 2. Lacrimonasal duct

Question 50

identify 1-4

Answer 50

1.Lacrimal gland 2.Lacrimal puncta 3. Lacrimal sac 4.Lacrimal canaliculus

Question 51

What muscles and nerves are acting in each side ?

Answer 51

Right eye: Lateral Rectus using abducens nerve CN VI Left eye: Medial Rectus CN III

Question 52

in carnivores is the orbit open or closed

Answer 52

open

Question 53

palpebral fissure (Rima palpebral) is located where

Answer 53

space between the 2 eyelids

Question 54

what is circled in green

Answer 54

zygomatic salivary gland

Question 55

Explain what nerve is damaged in the image

Answer 55

CN III

Question 56

Explain what nerve is damaged in the image

Answer 56

trochlear nerve CN IV

Question 57

Explain what nerve is damaged in the image

Answer 57

abducens nerve CN VI