lecture 39: Bovine skull and eye (NOT DONE)

Question 1

Answer 1

Question 2

match the animal to the fundus

Answer 2

A= fundus of eye of cow

B= fundus of eye of goat

Question 3

what is this

Answer 3

iridic granules surrounding pupil in an Llama eyeglobe

Question 4

purpose of the” ‘iridic granules” (corpora nigra)

Answer 4

they are used to to shade the eye from bright
sunlight.

In bright light these iridic granules can actually interlock to completely cover the centre of the pupil. This leaves just two holes open on either end of the pupil, reducing the amount of light that can enter the eye.

Question 5

list all the species that have iridic granules surrounding the pupil

Answer 5

These odd looking structures are also found in horses, cattle and sheep

Question 6

Bovine eye anterior structures: identify 1-6

Answer 6

1 –iris
2 –pupil
3 –iridic granule
4 – nicitating membrane
5 – conjunctiva
6 - puncta

Question 7

Identify 1-3

Answer 7

Question 8

Answer 8

4. cilliary bodies
5. pupil

Question 9

identify 6 and 7

Answer 9

Question 10

identify 8-10

Answer 10

8)choroid coat
9)tapetum lucidum
10) retina

Question 11

Answer 11

Answer 12

Question 13

identify the chambers and the humor

Answer 13

1. anterior chamber with aqueous humor
2. posterior chamber with vitreus humor
3. viterus humor

Question 14

Answer 14

1. cornea
2. pupil
3. lens

Question 15

Answer 15

Question 16

Answer 16

tapetum lucidum

Question 17

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

what CN innervates this muscle:
Inferior(ventral) oblique

Answer 20

CN3 elevates and turns eye laterally

Question 21

what CN innervates this muscle:
Inferior(ventral) Rectus

Answer 21

CN 3 pulls eye inferior (look down)

Question 22

what CN innervates this muscle:
Superior (dorsal) Rectus

Answer 22

CN3 pulls eye superior (look up)

Question 23

what CN innervates this muscle:
Medial rectus

Answer 23

CN3 pulls eye medially

Question 24

what CN innervates this muscle:
Lateral Rectus

Answer 24

CN6 pulls eye laterally

Question 25

what CN innervates this muscle:
Superior (dorsal) oblique

Answer 25

CN4 depresses eye and turn eye laterally

Question 26

“dehorning procedure” often exposes ______

Answer 26

cornual sinuses

Question 27

what is this showing

Answer 27

Horn shears to remove horn & expose cornual sinus (bovine)

Question 28

what is this showing

Answer 28

Cauterization of horn base (caprine)

Question 29

Answer 29

15 years old

Question 30

how old is this cow

Answer 30

9 years

Question 31

how old is this cow

Answer 31

8 years

Question 32

how old is this cow

Answer 32

5 years

Question 33

how old is this cow

Answer 33

2-2.5

Question 34

How old is this cow

Answer 34

1.5-2 years

Question 35

Answer 35

Question 36

Answer 36

Question 37

Why is this Limbus important

Answer 37

this is where you put an injection (between sclera and cornea)

Question 38

what is the name of CNIII

Answer 38

oculomotor nerve

Question 39

what is the name of CN VI

Answer 39

abducen nerve

Question 40

what is the name of CNIV

Answer 40

trochlear nerve

Question 41

OD=
OS=
OU=

Answer 41

OD= right eye
OS= left eye
OU= both eyes

Question 42

Lens is suspended bind the ____

Answer 42

pupil

Question 43

what is going on when an animal is diagnosed with glaucoma

Answer 43

There’s a problem with the drainage of aqueous humor (not usually overproduction).

This causes it to build up, leading to increased intraocular pressure (IOP).

Question 44

How does fluid travel through the chambers of the eye

Answer 44

from posterior chamber out the pupil into the anterior chamber

Question 45

Answer 45

Question 46

When you are dehorning an adult, what makes it a more risky procedure

Answer 46

you are opening the frontal sinus which might attract insects/parasites to infiltrate the area

**this is why we do it in the winter so there is less insect risk