Lecture 30 - Pelvic Limb 7 Flashcards

1
Q

define equine foot

A

epidermal hoof and all structures contained therein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what part of the horse hoof normally bears weight

A

tips of toes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the corium?

A

the dermal layer (sensitive) of the hoof that provides nutrition for the epidermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the 5 regional coria?

A
  1. perioplic
  2. coronary
  3. laminar
  4. sole
  5. frog
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

list the layers of the epidermal hoof wall

A
  1. stratum externum
  2. stratum medium
  3. stratum interum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what produces the layers of the hoof wall

A

germinal epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what layers of the hoof wall are non-pigmented

A

inner stratum medium
stratum interum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

describe the sensitive insensitive laminar bond

A

the insensitive epidermal laminae (stratum interum) interdigitates with the sensitive dermal laminae (laminar corium)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

where does the basement membrane fit into the laminar bonds

A

the basement membrane sits between the epidermal laminae and the dermal laminae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what do farriers use to guide nail placement

A

white lone/zone to avoid penetrating sensitive laminae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what are the white line? the white zone?

A

white line = non-pigmented inner stratum medium

white zone = non-pigmented inner stratum medium and stratum interum + pigmented horn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are side bones?

A

ossified collateral cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how fast does the hoof wall grow?

A

8mm/month

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how long does it take a hoof defect to grow out?

A

9-12 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

describe the sole and frog portions of the foot

A

sole = formed by GE covering sole corium, no contact with ground

frog = softest epidermis, formed by GE covering frog corium, some weight bearing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what structures break down in laminitis

A

the interdigital bond between dermal and epidermal laminae

15
Q

what is a rotator? why does it occur?

A

moderate loss of bond; pd pulls away from hoof wall at DIPJ due to DDFT

16
Q

what is a sinker? why does it occur?

A

extensive loss of bond; Pd separates from the hoof wall and “sinks”, can walk out of

17
Q

what are comparative ruminant and pig hoof differences?

A

no frog/bars, secondary laminae
bulb of the heel extends to the ground to form a digital pad

18
Q

what is the hoof capsule?

A

the hoof wall, sole, and frog

19
Q

what layer creates the external, waterproofing layer

A

stratum externum

20
Q

coronet

A

junction of hair and hoof wall

21
Q

T/F: the hoof has an extensive blood supply due to metabolic demands

22
Q

T/F: horse hooves only have primary laminae

23
what fills the gap as epidermal laminae continues past the dermal laminae
pigmented horn produced by the germinal epithelium
24
what reflects stressors on normal foot physiology
growth rings
25
which species have wider perioplic and coronary grooves: pig or horse
Pig