1. Lab 32
Blood Vessels

2. Vessels - Generalities
Peripheral distributions are the same on the left and right side of the body except near the heart.
Most arteries and veins follow similar paths and are often similarly named
One vessel can have several names (like a street)
Many tissues are serviced by several arteries and veins

3. Veins - Generalities
Veins are far more variable from person ot person than arteries
Several veins, especially in the limbs, have superficial and deep routes. Superficial route usually only caries 10-15% of blood at a maximum and serves to aid in thermoregulation

4. Vessels to know
Be able to identify the following arteries/veins on a model: inferior and superior vena cava, left and right pulmonary arteries and veins,, common carotid, subclavian, brachiocephalic, coronary
thoracic and abdominal aorta, celiac, renal, axillary, brachial, radial, ulnar, mesenteric, iliac, peroneal, femoral, popliteal, tibial, jugular, celiac, splenic, gastric, hepatic and saphenous.

6. Major Systemic Arteries
Figure 21-20

7. Branches of the Aortic Arch
Deliver blood to head and neck:
brachiocephalic trunk
right subclavian artery
right common carotid artery
left common carotid artery
left subclavian artery

8. Arteries of Upper Limbs
Subclavian  axial  brachial  splits into radial, ulnar
3D Peel Away

9. Descending aorta thoracic aorta  abdominal aorta  common illiac  to be continued
renal

10. 3 Unpaired Branches of the Abdominal Aorta
Celiac trunk, divides into:
left gastric artery
splenic artery
common hepatic artery
Superior mesenteric artery
Left mesenteric artery

11. celiac
gastric
hepatic
splenic
mesenteric
iliac

12. Illiac  femoral  popliteal Posterior and anterior tibial.
Posteror tibial gives rise to peroneal (fibular)

13. Veins Know the veins with the same names as arteries Exceptions:
saphenous (leg) no comparable artery
jugular (neck) like carotid arteries

14. Lab #32
Look at 3 slides:
Artery
Vein
Aorta
For arteries, veins, and aorta, label the three layers and answer the questions
Look at models and diagrams to identify vessels for the practical exam

15. Artery or Vein?
Arteries have high numbers of elastic fibers, which causes them to recoil when at low pressure (or empty). Causes:
folded or ridged endothelium (since it cannot contract)
constricted lumen (but appears round)
Veins do not constrict like this and they are less resiliant so they collapse in section. Causes:
smooth, unfolded endothelium.
lumens look flattened and oblong