Tack Flashcards
Tongue
The pressure point required for flexion and yielding of jaw, chewing, activation of the salivary glands and production of foam.
Tongue sensitvity
More sensitive along the edges than the center
Bars
Pressure points that lead to flexion and yielding of the jaw and flexion of the poll. The bars are the most sensitive structures of the mouth
Corners of the mouth
Encourages extension of the head and neck and sometimes raises the head. The skin is flexible and
less sensitive than the tongue.
Palate (roof of the mouth)
Encourages the horse to open the mouth, tip the head or tuck its chin into its chest. This area
is less sensitive than the bars
Curb groove or chin groove
Located on the underside of the horse’s head where the lower lip meets the jaw. It is the location
of the mandible nerve, which is a large and very sensitive nerve that runs down the edge of the under part of the jaw and goes into the bone just above the chin.
Sides of jaw
Encourages the horse to turn away from lateral pressure
Bridge of nose
Encourages poll flexion. The bridge of the nose is a very complex, sensitive structure of bone and cartilage
that is easily damaged.
Poll
Encourages the lowering of the head. The poll area needs to be handled with care as all mechanical control relies on some form of bridle fitting partially or fully to the poll region.
Poll pressure by itself is not very significant.
Direct pressure
One pound of pressure on the reins equals one pound of pressure in the mouth
Leverage
This multiplies the pressure.
Factors include length of shank, tightness of curb chain and ratio of upper shank to lower shank.
The greater the leverage, the more severe the pressure
Mouthpiece
: A thicker mouthpiece spreads pressure over a wide area while a thinner mouthpiece concentrates the pressure
Mouthpiece surface
Smooth mouthpieces are the gentlest. Twisted, corkscrew, wire or sharp edge mouth pieces are more
severe
Auxillay equipment
Nosebands and martingales make bits more severe by limiting the horse’s options
Snaffle bit
Direct pressure, non-leverage bits.
Snaffle action
tongue, lips and bars.
Common snaffle cheeks (4)
D-ring
Eggbutt
Full
Loose
D-ring snaffle
Has slight lateral pressure.
Fixed mouthpiece
Eggbutt snaffle
Prevents lips from being pinched.
Fixed mouthpiece
Not seen much in hunter ring
Full snaffle
Helps with lateral guidance.
Fixed mouthpiece.
Loose-ring snaffle
Mouthpiece is loose and rotates on ring
Can pinch
Allows horse to set the mouthpiece for its comfort level
Corkscrew mouthpiece
Tight corkscrew twist.
Stronger than a twist
Double wire mouthpiece
Two mouthpieces made of thin twisted wire
Each mouthpiece has a joint and the joints are asymmetrical
Dr. Bristol mouthpiece
Rectangular plate in center of mouthpiece
Plate is at 45 degree angle, rests on tongue
Two joints
French link mouthpiece
Small bone-shaped plate in center of mouthpiece
Plate is not at angle
Two joints
Hollow mouth
Mouthpiece is hollow and wide.
Also extremely light