Lab 4 Superficial abdominal structures and GI topography of the horse Flashcards
External abdominal oblique function
defication, micturition, partution, expiration, flexes trunk
abdominal muscles innervation
receive innervation from D and V branches of spinal nerves T18-L2
boundaries of abdominal cavity
cr- diaphragm
dorsal- lumbar vertebrea and hypoxia muscles
cd- pelvic inlet
lateral- internal and external abdominal obliques and transversus abdominus
ventral- rectus abdominal muscle
sub iliac lymph nodes
on edge tensor fasciae latae dorsal to stifle; Darin superficial parts of hip, thigh, flank, and sends efferents to lateral iliac lymph nodes w/ in abdomen
liver lobes of horse
horses lack gallbladder
- R lobe bigger than L
- quadrate between has lobes, caudate on back side
boundaries of epiploic foramen
Cr- hepatoduodenal ligament (lesser omentum)
Dorsal- cd vc and caudate process of caudate liver lobe
cd- hepatic artery / mesoduodenum
ventral- portal vein
small intestine course
duodenum arises from stomach passes caudally on r of root of mesentery, climbs over top of base of cecum then curves right to left caudal to mesentery and passes cr on left side of mesentery and becomes jejunum v to left kidney, jejunum coiled on l side abdomen and ends as ileum which passes l to r cd to root mesentery and v to duodenum where enters base of cecum at lesser curvature
duodenum mesentery
mesoduodenum
jejunum mesentery
mesojejunum
ileum
attached to cecum by ileocecal fold
regions of stomach
glandular and non glandular; separated by margo placates, glandular region more ventral; cardia, body, fundus of stomach
deep circumflex iliac artery
first branch off of external iliac artery
cr branch found in reflection of internal oblique and on surface of transversus
cd branch lies deep to sub iliac LNs which are on edge tensor fasciae latae dorsal to stifle Lisa along with lateral cutaneous femoral nerve
