Flashcards in Anatomy EX2 - Arteries Deck (46)
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Pericardiacophrenic & superior phrenic aa
-supply superior surface of diaphragm (via int. thoracic a & thoracic aorta)
2
Inferior phrenic aa
- supply inferior surface of diaphragm (via abdominal aorta)
- sends off 6-8 Sup. suprarenal aa.
3
Musculophrenic aa
- supply periphery of diaphragm and upper abdominal mm. (via int. thoracic aa.)
-Br. of Internal Thoracic (Mammary)
-Runs along costal cartilage
4
Superior Epigastric aa.
-Br. of Internal Thoracic (Mammary)
-Enters posterior rectus sheath lat. to sternum
-Supplies upper rectus abdominus mm.
-Anastomoses with Inf. Epigastric
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Celiac Trunk
- 1st major br. of Abd aorta
- Supplies liver, gb, esophagus, stomach, pancreas & spleen
-3 main branches
1)Common hepatic
2) L. gastric
3) Splenic aa.
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Splenic a.
- Left br. of celiac trunk
- Runs toward spleen
- supplies pancreas & spleen
-Sends short gastric aa. & L gastroepiploic a.
-supply greater curvature of stomach
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L Gastric a.
- Superior br. of celiac trunk
- Runs L toward lesser curvature of stomach
- supplies stomach & esophagus (via esophageal brs.)
8
Common Hepatic a.
- Right br. of celiac trunk
- Runs toward liver & gallbladder
- 2 terminal branches:
1) Proper hepatic a.
2) Gastroduodenal a.
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Proper Hepatic a.
- Superior br. of common hepatic a.
- Runs toward liver & medial to bile duct
- Splits into R & L hepatic aa
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R. Gastric a.
- usually arises from proper hepatic a.
-May arise from common hepatic or gastroduodenal aa.
- Anastomoses with L. gastric a.
- Supplies lesser curvature of stomach
11
Cystic a.
- usually arises from R hepatic a.
- 75% run post. to common hepatic duct
- 24% run ant. to common hepatic duct
- 1% are double cystic aa.
- Supplies gallbladder & cystic duct
12
Common Hepatic aa. Variations
- variations ~ 40%
- R hepatic a. may arise from SMA
- L hepatic a. may arise from L. gastric a.
-Both R and L hepatic aa. may arise from celiac trunk
Accessory R & L hepatic aa also common
13
Gastroduodenal a.
- Inferior br. of common hepatic a.
- Runs toward junction of stomach & duodenum
- sends Supr. pancreaticoduodenal aa. to pancreas/duodenum
- sends R gastroepiploic a to gr. curvature of stomach
14
Superior & Inferior Pancreaticoduodenal aa.
- Gastroduodenal a. sends off Supr. pancreaticoduodenal aa.
- SMA gives off Inferior pancreaticoduodenal aa.
- They anastomose and supply head of pancreas & duodenum
*Splenic a. supplies rest of pancreas with additional branches
15
Lumbar aa,
- 4 pairs aa
- brs of Abd aorta
(sup to bifurcation)
*Note:
Aorta bifurcates at L4
level of umbilicus
16
Suprarenal aa.
- supply adrenal glands
1) Sup. suprarenal aa (6-8) from Inferior phrenic a.
2) Middle suprarenal aa (1+) from Abdominal aa.
3) Inf. suprarenal aa (1+) from Renal aa.
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Renal aa.
- R longer
- R passes posterior to IVC
- Each divides at hilum into segmental aa.
- Enter hilum of each kidney to supply it
- lateral branches of abdominal aorta (lateral to SMA)
- sends off brs. to adrenal glands via inf. suprarenal aa., and ureters
18
Ureter aa.
– arise from 3-4 sources:
1) renal a.
2) testicular or ovarian a.
3) abdominal aorta
4) internal iliac a. (Pelvic cavity)
19
Gonadal aa.
• lateral branches of abdominal aorta (inf. to renal aa.)
• Ovarian aa (♀)
– crosses over ureters & iliac vessels
– descends to pelvis to supply ovaries
• Testicular aa. (♂)
– crosses over ureters & enters inguinal canal
– descends into scrotum to supply testes
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Deep Circumflex Iliac aa.
- Br. of External Iliac
- Runs between IO & TA
Supplies inferior lateral abdominal mm.
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Inferior Epigastric aa.
-Br. of External Iliac
-Enters posterior rectus sheath at arcuate line
-Supplies lower rectus abdominus mm.
-anastomoses with Sup. Epigastric
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Superficial Circumflex Iliac aa.
- br. of femoral a.
- supplies region of inguinal ligament
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Superficial Epigastric aa.
- br. of femoral a.
- supplies abdomen infr. to umbilicus.
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Internal iliac aa.
- enter true pelvis & branches
- 3 posterior & 7 anterior
- supplies pelvic organs & gluteal region
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Iliolumbar a.
- between iliac crest & L5
- supplies medial ilium & L5
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Lateral Sacral a.
- enters ventral sacral foramina
- supplies sacrum & ventral sacral nn.
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Superior Gluteal a.
- between L5 & S1
-enters gluteal region superior to piriformis m.
-supplies gluteal mm. with superior gluteal nn.
-exits greater sciatic foramen
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Inferior Gluteal a.
- Between S2 & S3(S1 & S2)
- inferior to piriformis m.
- supplies gluteal mm with inferior gluteal nn.
NOTE: both Sup. & Inf. Gluteal aa. exit pelvis via greater sciatic foramen
29
Middle Rectal a.
- supplies rectum
- anastomoses with superior rectal from IMA & inferior rectal from internal pudendal a.
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