Horse Hoof Lecture Flashcards
Define hoof
The dermal and epidermal structues distal to the coronet
Define hoof capsule
The epidermal structures distal to the coronet
Define foot
The hoof capsule and all of the structures contained within.
High ringbone
Exostosis at the pasten
Low ringbone
Exostosis at the coffin joint
Sidebone
Ossification of the cartilage of the hoot
Pyramidal disease
Ossification of extensor process
What are the “XYZs” of the horse world
Straight, oblique, and cruciate sesamoidean ligament
Give three general types of synovial structures and give a specific example of eat
Joint capsule- fetlock jt capsul
Bursa- navicular bursa
Tendon sheath-digital flexor tendon sheath
Give layers of epidermis from must subcutaneous to deep and indicate which are mitotically active
Horny layer (stratum corneum) Granular layer (stratum granulosum) Pickle-cell layer (stratum spinosum) Basal layer (stratum basale)
Basal layer is the only layer with mitotic elements
Statum germinativum
Stratum basale and stratum spinosum
–>Germinal layer
What degree are the fore hoof capsule and hind hoof capsule?
Fore= 47
Hind=54
Coronet
Jxn of wall and skin
What side of the hoof capsule is more angled medial or lateral
Lateral
Name some elements of the hoof capsule
Periople Wall Sole Frog Bars White line
White line
AKA
Jxn of the sole and the wall
AKA zona alba
White line disease affects what part of ground surface of hoof
Water line (unpigmented part)
Give layers of the wall from most outer to inner
Stratum externum
Stratum medium
Stratum internum
What portions of the hoof are made of water
frog= 50%
sole=33%
wall=20%
What is stratum externum derived from
periople
T/F Proximal ends of periople and stratum medium feature grooves
T
What does the internal layer of the wall feature? What is that internal layer called.
Stratum internum ft 600 primary laminae
What are the dermal regions of the hoof and what is overlying these regions
Dermal layers=perioplic dermis, coronary dermis, laminar dermis, sole dermis, frog dermis
Straum germinativum covers dermal regions.
Explain how SA is increased in the inner hoof wall
There are 600 primary epidermal lamellae that have 200 secondary lamellae along the length of each primary. The tips of the primary and secondary lamellae are all orientated towards the distal phalanx.
