Anatomy Test #3 - Digestive Tracts Flashcards

Terms Definitions
Where in the body is the cecum located?
The cecum is located on the abdomen's right side EXCEPT IN THE PIG, where it is on the left side
What are TENIAE? What species are they found in?
Teniae: smooth muscle bands on the cecum
They are found in horses and pigs
Teniae are responsible for the ______ in the gut wall
Sacculations, also known as Haustra
Teniae extend to the horse's _____ and part of the pig's _______.
Horse's colon; pig's ascending colon
What is the RECTAL AMPULLA? What species have it?
Rectal Ampulla: dilated terminal part of the rectum
Found in the horse, ox & dog
The horse has no   (organ)   and thus no ______ duct.
Gall bladder; cystic duct
The hepatic ducts of the horse join to form the...
Bile duct
What lobes are present in the liver of the CARNIVORE?
Left Lateral, Left Medial, Quadrate, Right Lateral, Right Medial, Caudate Lobe with Caudate Process and Papillary Process
What lobes are present in the liver of the RUMINANT?
Left Lobe (NOT divided), Quadrate, Right Lobe (NOT divided), Caudate Lobe with Caudate Process and Papillary Process
What lobes are present in the liver of the HORSE?
Left Lateral, Left Medial, Quadrate, Right Lobe (NOT divided), Caudate Lobe with Caudate Process ONLY
What lobes are present in the liver of the PIG?
Left Lateral, Left Medial, Quadrate, Right Lateral, Right Medial, Caudate Lobe with Caudate Process ONLY
What does the HEPATIC TRIAD consist of? (3 parts)
1. Bile duct
2. Hepatic artery
3. Portal vein
What is the SIGMOID LOOP?
The sigmoid loop is the "S"-shaped curve of the cranial part of the duodenum
Where is the sigmoid loop located in the body relative to other organs?
What species has the sigmoid loop?
It is located against the visceral side of the liver in the horse
What is the DUODENAL AMPULLA? What species is it found in?
The duodenal ampulla is the dilated cranial part of the duodenum in the horse
What is the FLANGE?
The flange is the part of the small intestines with the longest mesentery
The flange consists of the dital end of the _______ and the proximal end of the ________.
Jejunum; Ileum
In what species is the flange found?
Bovine
What is the ILEOCECAL OPENING? What species has it?
Opening into the cecum of the horse
What is the ILEOCOLIS OPENING? What species have it?
Opening to the colon of the dog, cat, and rabbit
What is the ILEOCECOCOLIC OPENING? What species have it?
A "T"-junction into the cecum and ascending colon found in ruminants and swine
What does the ascending colon of the carnivore look like? (2 adjectives)
Short & Straight
What does the ascending colon of pigs & ruminants look like?
Spiral colon - forms a coil
What does the ascending colon of the horse look like?
Forms a double horseshoe-shaped loop
The ANAL SACS are pouches located between the ____ _____ and _____ ________ sphincter muscles.
Inner smooth; outer striated
The anal sacs open to the ____ ______ at __ and __ o'clock.
Anal Canal; 4 and 8
Anal sacs are found exclusively in what animals?
Carnivores
What is the LYSSA and where is it found?
The lyssa is a bar of cartilage found in the ventral surface of the apex of the tongue
The LYSSA is found in what species?
Dog
The horse has tongue cartilage located where?
Embedded in the median plane of the dorsal surface
What is the TORUS LINGUAE? Who has it?
The torus linguae is a round swelling of the caudodorsal surface of the ox tongue
The soft palate of the horse is located _______ to the epiglottis
Ventral
(in front of)
Is the soft palate of the horse long or short?
Very long
The horse cannot do what to its soft palate?
Voluntarily raise it
The horse breathes exclusively through its ________.
Nostrils
The horse vomits through its _______.
Nostrils
What is the PHARYNGEAL DIVERTICULUM?
The pharyngeal diverticulum is a blind mucosal pouch in the roof of the nasal pharynx
What species has a pharyngeal diverticulum?
Pig
The pharyngeal diverticulum can be mistaken for the  (organ)  during   (process) .
Esophagus; pilling
Name 2 unique parts of the horse stomach.
Saccus Cecus
and
Margo Plicatus
What is the SACCUS CECUS? What is it lined by?
A blind sac; extensive fundus of the horse's stomach lined by nonglandular mucosa
The saccus cecus of the horse is homologous to the ______ of ruminants.
Forestomach
What is the MARGO PLICATUS?
Grossly visible, internal, irregular raised line separating the horse stomach's glandular and nonglandular portions
What is another name for the margo plicatus?
Folded Margin
What is the GASTRIC DIVERTICULUM? What species has it?
What is another name for it?
Extension of the fundus found in pigs
Another name for it is Ventriculi
What is the TORUS PYLORICUS?
Round swelling of the pylorus in the lumen of the pyloric canal
What species is the torus pyloricus found in?
Swine
&
Ruminants
What type of stomach do RUMINANTS have?
Complex Composite
What type of stomach do HORSES have?
Simple Composite
What type of stomach do CARNIVORES have?
Simple Glandular
What type of stomach do PIGS have?
Simple Composite
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