TONGUE Flashcards
TONGUE in general
Tongue = LINGUAE
- Fills the ORAL CAVITY
- Very mobile
- Supported caudally by the HYOID BONE
- Consists of STRIATED MUSCLES
Structures of the TONGUE(LINGUA)
I: DORSUM LINGUAE A- TORUS LINGUAE (in Ru) B- FOSSA LINGUAE (in ru) C- CARTILAGO DORSI LINGUAE (eq) D- SULCUS MEDIANUS LINGUAE
II: APEX LINGUAE
A: LYSSA (ca)
III: CORPUS LINGUAE
IV: RADIX LINGUAE (caudal to vallate Papilla)
- TONSILLA LINGUALIS
A: LYMPHATIC FOLLICLES - Folliculi Lingualis (bo,eq)
B: TONSILLARIS PAPILLA - Papilla Tonsillares
(Su)
V: MARGO LINGUAE
VI: FRENULUM LINGUAE (double in Su+Bo)
VII: DUCTUS THYROGLOSSUS
(In foramen Cecum)
VIII: SEPTUM LINGUAE
IX: APPONEUROSIS LINGUAE
MUCOUS MEMBRANES of TONGUE
- Allong the VENTRAL and LATERAL surface?
- On the DORSUM LINGUAE
- Its thin and delikate
- It is:
- Thick
- CORNIFICATION of the EPITHELIUM
(Especially in RU and CATs)!!
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
- Formed by mucous membranes
- On the DORSUM LINGUAE
I: MECHANICAL PAPILLAE A- FILIFORM B- CONICAL C- LENTIFORM - MECHANICAL function
II: GUSTATORY PAPILLA A- FUNGIFORM B- FOLIATE C- VALATE - GUSTATORY function
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
FILIFORM PAPILLA
Threadlike
HEAVILY CORNIFIED in FE and OX
Covers DORSUM LINGUAE
Covers the RADIX LINGUAE (Car+Sus)
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
CONICAL PAPILLA
- Scattered among the FILIFORM PAPILLAS
OX, Goat, sheep especially on the TORUS LINGUAE
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
LENTIFORM PAPILLAE
- Lens-shaped
- Scattered among the FILIFORM PAPILLa (of the OX, Goat, sheep especially on the TORUS LINGUAE)
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
FOLIATE PAPILLAE
- On the BORDER of the TONGUE
- ROSTRAL to the: PALATOGLOSSAL ARCH
- Bear TASTE BUDS
- Ø in RU
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
FUNGIFORM PAPILLAE
- Mushroom - shaped
- Bear TASTE-BUDS
- ON the DORSUM LINGUAE
- On the LATERAL and VENTRAL Surface of the Tongue
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
VALATE PAPILLAE in general and interspecial differences in #!
- Flat Papilla
- Surrounded by a Circular groove
- Bear TASTE-BUDS
- On the DORSUM LINGUAE, just ROSTRAL to the RADIX LINGUAE
🐷🐴: ONLY one pair (sus, eq)
Carnivores: 2-3 PAPILLAS on EACH side
🐮: 8-17 PAPILLAS (OX)
MUCOUS MEMBRANES of TONGUE
- LINGUAL PAPILLAS
MARGINAL PAPILLA
Pressent in NEWBOARN Car + Sus
Muscles of the TONGUE
MUSCULI LINGUAE
I: INTRINSIC(M.Lingualis Proprius)
II: EXTRINSIC
I: Forms the BULK of the TONGUE Consists of MUSCLE FIBERS, Ø attached to SKELLETON M.FIBERS run in: 1. Longitudinal 2. Perpendicular 3. Transverse direction
II:
Originate from the SKELLETON
Enters the TONGUE from behind and below
INTRINSIC MUSCLES Of the TONGUE
M.LINGUALIS PROPRIUS
- FIBRAE LONGITUDINALIS SUPERFICIALIS
- FIBRAE LONGITUDINALIS PROFUNDUS (eq)
- FIBRAE TRANSVERSE
- FIBRAE PERPENDOCULARES
EXTRINSIC MUSCLES of the TONGUE
- M. GENIOGLOSSUS
- M.STYLOGLOSSUS
- M. HYOGLOSSUS
Structures of the Tongue
I: DORSUM LINGUAE
- Surface opposite palate
A- TORUS LINGUAE
In the ruminants
Prominance of the DORSUM LINGUAE
Caudal to FOSSA LINGUAE
B- FOSSA LINGUAE
In the Ruminants
Deep pit on the DORSUM LINGUAE
Rostral to TORUS LINGUAE
C- CARTILAGO DORSI LINGUAE Slender bar of cartilage In HORSE🐴 TONGUE In medial plane Below mucous membrane
D- SULCUS MEDIANUS LINGUAE
Median DORSAL groove
Devides the Tongue into two EQUAL HALVES
Structures of the Tongue
II: APEX LINGUAE
Free rostral portion
Tip of Tongue
Pressens dors and ventr surface
VENTRAL SURFACE - connected to the FLOOR of the ORAL CAVITY by median fold = FRENULUM LINGUAE
A- LYSSA
In carnivores
The APEX contains a median filiform structure
Embedded in the muskulature along the Ventral surface of the APEX
Structures of the Tongue
III: CORPUS LINGUAE
Body
Between APEX and ROOT
Structures of the Tongue
IV: RADIX LINGUAE
- Root
- CAUDAL to the VALATE PAPILLA
- Slopes ventrally toward the base of the EPIGLOTTIS
TONSILLA LINGUALIS
A- LYMPHATIC FOLLICLES
In Bo, Eq
On the RADIX LINGUAE
B- TONSILLAR PAPILLAE In Su Conical Papillae Contains LYMPHATIC NODULES On the RADIX LINGUAE
Structures of the Tongue
V: Margo LINGUAE
Margin of the Tongue
Structures of the Tongue
IV: FRENULUM LINGUAE
Ventral median fold
Attaches the Tongue to the floor of the mouth.
DOUBBLE in Sus and BO
Structures of the Tongue
VII: DUCTUS THYROGLOSSUS
Epithelial tube
evaginates from the root
Gives rise to the THYROID Gland
in FORAMEN CECUM
Structures of the Tongue
VIII: SEPTUM LINGUAE
Sheet of CT in the median plane
Structures of the Tongue
IX: APPONEUROSIS LINGUAE
Dense layer of CT
Covers the musculature
Attachement of the muscles
