Avian Internal Anatomy Flashcards
the accessory organs include
tongue, salivary glands, liver, gall bladder, and pancreas
oropharynx
combined oral and pharyngeal space
pharyngeal space
a joint area for the digestive and respiratory system
the function of the hyoid apparatus is
strengths and supports the tongue
hyoid apparatus is a complex of
cartilage and bone
salivary glands secrete
mucin, bicarbonate, and water
salivary glands do NOT secrete
salivary amylase
the palatine cleft is a passage between
oral and nasal cavities
infundibular cleft
remains open to permit pressure equalization in flight
laryngeal cleft
closes to block food from entering the larynx
T or F: the larynx contains vocal cords in the bird
false; does NOT contain vocal cords
syrinx
responsible for vocalization in birds
crop
feed storage area
T or F: All avians don’t have a crop
true
how many heart chambers do birds have?
4
liver
processes nutrients and bile
gall bladder
stores bile
spleen
lymphocyte production and recycles RBCs
proventriculus
secretes pepsinogen for protein breakdown, HCL, mucous, and gastrin
what is the glandular stomach
proventriculus
ventriculus
grinds feed; functions similarily to teeth
small intestine
produces the enzymes enterokinase, carboxy-peptidase, aminopeptidase, maltase and sucrase; also bicarbonate
the small intestine does NOT produce
lactase
duodenum
receives bile and pancratic secretions; revies ingesta from the ventriculus; initiates intestinal digestion of protein and starch
jejunum
digestion of protein and carbohydrates is fairly complete; absorption of amino acids, monosaccharides, calcium, and iron
ileum
absorption of bile salts, water, electrolytes, and vitamin B12
Meckels Diverticulum
Yolk stalk remnant; Marks juncture of jejunum and ileum; Lymphocyte production.
Where is the pancreas found in avians
Duodenal loop
pancreas
produces digestive enzymes and bicarbonate, and secretes insulin and glucagon.
hepatic Portal System
Collects nutrients absorbed from the digested tract.
The Large Intestine contains
Ceca and the colon.
Chickens have how many ceca
two (2)
Ceca
Microbial fermentation of residual starch and some cellulose; absorption of fermentation products (VFAs) and vitamins.
T or F: birds have an appendix
False
Colon
Absorption of fermentation products (VFAs) and vitamins.
Cloaca
The juncture of the ureters, colon, and reproductive system.
Bursa of Fabricius
Produces B-lymphocytes
External Opening of Cloaca
Vent
Where is reproductive urinary, and fecal material exit?
Vent
