Biology 322 Human Anatomy Blood Vessels

Pulmonary Circuit

Systemic Circuit

Arteries: Veins:

Elastic (Large) Arteries: Aorta, pulmonary trunk, & their close branches Large Veins: Return blood to heart Medium Veins: Gather blood from head, limbs, & organs Muscular (Medium) Arteries: Distribute blood to head, limbs, & organs Small Veins: Gather blood from tissues Arterioles: Distribute blood within organs & tissues Venules: Gather blood from capillaries. Also some exchange of same materials as capillaries Capillaries: Primary site for exchange of gases, nurients, ions, wastes, hormones, cells, etc.

Pathway Variations:

Entire circulatory system (heart, all vessels) lined Capillaries Larger vessels, either veinous or arterial,

You will be asked to know the names of some specific arteries and veins, but first it is important to understand the patterns which these vessels form.

“Great Vessels” Not visible:

Arteries Arising From Arch of Aorta

Veins which drain blood from the neck and head (including brain)

In upper limb,

Upper limb also has

In abdomen, aorta gives rise to two sets of arteries: 1. 2.

In abdomen, also two sets of veins: 1. 2.

Deep Veins In lower limb

Superficial Veins Lower limb also has

You should be able to identify the following arteries, know from where each artery receives blood, and know to where each artery delivers blood. Aorta Pulmonary trunk Brachiocephalic artery Pulmonary arteries Subclavian arteries Common carotid arteries Axillary arteries Internal carotid arteries Brachial arteries External carotid arteries Radial arteries Vertebral arteries Ulnar arteries Basilar artery Common iliac arteries Renal arteries Internal iliac arteries Celiac trunk External iliac arteries Hepatic artery Femoral arteries Splenic artery Popliteal arteries Left gastric artery Anterior tibial arteries Superior mesenteric arteries Posterior tibial arteries Inferior mesenteric arteries Gonadal arteries Coronary arteries Example: Each external iliac artery receives blood from the common iliac artery on that side and delivers blood to the femoral artery on that side

You should be able to identify the following veins, know from where each vein receives blood, and know to where each vein delivers blood. Superior vena cava Hepatic portal vein Inferior vena cava Splenic vein Brachiocephalic veins Inferior mesenteric vein Subclavian veins Superior mesenteric vein Axillary veins Common iliac veins Brachial veins Internal iliac veins Radial veins External iliac veins Ulnar veins Femoral veins Cephalic veins Popliteal veins Basilic veins Anterior tibial veins Median cubital veins Posterior tibial veins Vertebral veins Greater saphenous veins Internal jugular veins Lesser saphenous veins External jugular veins Gonadal veins Example: Each external iliac vein receives blood from the femoral vein on that side and delivers blood to the common vein on that side