Lecture 19: Circulatory System Trunk and Lower Limbs Flashcards Preview

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Flashcards in Lecture 19: Circulatory System Trunk and Lower Limbs Deck (18)
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1
Q

Thoracic aorta

A

Continuation of arch of aorta descending in posterior mediastinum through diaphragm at TXII
Supplies all thoracic viscera except heart (lung tissue, esophagus)

2
Q

Abdominal aorta

A

Continuation of thoracic aorta past diaphragm from TXII - LIV
Supplies abdominal viscera

3
Q

Branches of abdominal aorta

A

Celiac trunk/artery
Superior mesenteric artery
Inferior mesenteric artery

4
Q

Celiac trunk

A

Divides into left gastric, common hepatic, splenic branches

Spplies esophagus, stomach, liver, gall bladder, spleen, pancreas, upper half of duodenum

5
Q

Superior mesenteric artery

A

Lower half of duodenum, pancreas, small intestine, cecum, appendix, ascending colon, R 2/3 of transverse colon

6
Q

Inferior mesenteric artery

A

L 1/2 of transverse colon, descending colon, sigmoid colon, rectum, upper anal canal

7
Q

Common iliac arteries

A

After abdominal artery ends at L4, it divides into L/R common iliac arteries
Splits into internal and external iliac arteries at sacroiliac joints

8
Q

Internal iliac artery

A

Goes into pelvic cavity

Supplies pelvic viscera (rectum, uterus, bladder, prostate)

9
Q

External iliac artery

A

Supplies anterior abdominal wall and false pelvic masculature

10
Q

Pathway of arteries to lower limb

A

External iliac artery passes deep to inguinal ligament and continues as femoral artery - supplies anterior and medial compartments of thigh
Has branch, deep femoral artery - supplies posterior compartment of thigh
Femoral artery continues to posterior aspect of knee joint and becomes popliteal artery - supplies knee joint and soft tissues around
Popliteal artery divides into anterior and posterior tibial arteries
Anterior tibial artery - supplies anterior compartment of leg
Posterior tibial artery - supplies lateral and posterior compartment of leg
Tibial arteries will reach the foot and form arterial arches

11
Q

Pathway of veins from lower limb

A

2 superficial veins
Greater saphenous vein (medial) -drains into femoral vein
Small saphenous vein (lateral) - drains into popliteal vein
Femoral vein becomes external iliac vein after passing inguinal ligament

12
Q

Pathway of veins from pelvic region

A

Internal iliac vein collects venous blood of pelvis
External iliac vein collects from lower anterior abdominal wall and false pelvis walls, and continues from femoral vein
Internal and external iliac vein to make L/R common iliac vein at LV
Common iliac veins give rise to inferior vena cava (1 inch)

13
Q

Pulmonary veins

A

Pair of veins receiving oxygenated blood from lung and drain into L atrium

14
Q

Superior vena cava

A

Union of L/R brachiocephlic veins behind first costal cartilage
Drains into R atrium
Receives venous blood of head, neck, upper limbs, thorax (except heart)

15
Q

Inferior vein cava

A

Union of L/R common iliac veins
Drains into R atrium
Receives venous blood from abdominal viscera, lower limbs, pelvis

16
Q

Azygos system

A

Veins that drain venous blood of chest wall
Anterior intercostal vein - drain to internal thoracic vein which drains to brachiocephalic vein
Posterior intercostal vein - drain into azygus, hemiazygus, accessory hemiazygus vein; ultimately drains into superior vena cava

17
Q

Hepatic portal system

A

Hepatic portal vein
Splenic vein - at spleen, receives blood of spleen, stomach, pancreas
Inferior mesenteric vein - receives blood of splenic flexure, descending colon, sigmoid colon, rectum
Superior mesenteric vein - receives blood of small intestine, cecum, appendix, ascending colon, transverse colon

18
Q

Hepatic portan vein

A

Collects venous blood from digestive system below diaphragm (esophagus, stomach, small/large intestine, pancreas, spleen) to liver
Nutrients need to be metabolized before entering the inferior vena cava