Arteries of pelvis and lower limbs begin at iliac and move downwards internal iliac external iliac artery femoral popliteal anterior and posterior tibial artery 2 types of capillaries Continuous most common Fenestrated have pores 2 types of common carotid arteries external and internal located in anterior triangle of the neck 2 veins the dorsal vein network drains into Cephalic lateral Basilic medial 3 branches of aortic arch Brachiocephalic trunk Left common carotid Left subclavian arteries 3 Layers of Blood Vessels 3 veins of the abdomen Tunica intima Tunica media Tunica externa Renal veins Suprarenal veins Hepatic veins anastomoses Arteries the reconnection of two streams that previously branched out such as blood vessels or leaf veins have a layer of smooth muscle controlled by autonomic nervous system Arteries carry blood away from heart Arterioles Smallest arteries diameter of arterioles are controlled by sympathetic nervous system Ascending aorta arises from left ventricle axillary artery becomes the brachial artery Blood gets fed to the brain through what cerebral arteries Anterior Cerebral Middle Cerebral Posterior Cerebral Circle of Willis Brachial artery becomes the radial and ulnar artery Capillaries smallest blood vessels site of exchange of molecules between blood and tissue fluid Capillary beds network of capillaries running through tissues Deep veins travel in what relation to the corresponding artery they travel with the corresponding artery follow path of companion arteries radial ulnar to brachial to axillary to subclavian How are deep veins named deep veins share the name of the artery they accompany Descending aorta Disorders of Blood vessels comes off aoritc arch and continues to about the diaphragm Aneurysm weakened area in the wall of a blood vessel that balloons out Atherosclerosis building up of plaque in lumen seen in high blood pressure beings in youth Deep vein thrombosis formation of a blood clot in a deep vein superficial veins may be engorged as a result Elastic arteries the largest arteries also called conducting arteries dampens the surge of blood pressure from fluid entering your bloodstream Endothelial cells held together by tight junctions Great VS Small saphenous veins Hepatic portal System great empties into femoral vein small empties into popliteal vein take in digestive nutrients goes through liver to be processed then distributed throughout the rest of the body Inferior vena cava returns blood from body below diaphragm intercellular clefts gaps of unjoined membrane small molecule can enter and exit Is the blood brain barrier a barrier against oxygen carbon dioxide and some anesthetics No Lumen Central blood filled space of a vessel Median cubital vein used to obtain blood or administer IV fluids where you donate blood from Multivein venous plexuses Muscular distributing Arteries lies distal to elastic arteries tunica media is thick contains internal and external elastic laminae Name the 2 unusual patterns of venous drainage dural sinuses hepatic portal system Postcapillary Venules smallest venules Venules smallest veins precapillary sphincters regulate the flow of blood tissue Sinusoids Wide leaky capillaries found in some organs usually fenestrated occur in bone marrow and spleen Subclavian artery enters the axilla as the axillary artery Superficial veins are located just below the skin Superior Vena cava returns blood from body regions superior to the diaphragm Systemic circulation carries oxygenated blood away from heart Thoracic and abdominal aorta What will they divide into thoracic in the region of T5 T12 abdominal ends at L4 divides into common iliac arteries Tunica externa composed of connective tissue outer layer Tunica intima composed of simple squamous epithelium inner Tunica Media sheets of smooth muscle middle Vasoconstriction can alter what The size of the lumen and the rate of blood movement through it Vasoconstriction VS Vasodilation vaso vessel vasoconstriction contraction vasodilation relaxation Veins carry blood towards the heart What are the smallest blood vessels and their functions in the lungs small intestines endocrine glands and kidneys capillaries red blood cells pass through single file Lungs oxygen enters blood carbon dioxide leaves Small intestines receive digested nutrients Endocrine glands pick up hormones Kidneys remove of nitrogenous wastes What can you control blood flow through Give an example Major arteries and pressure points i e femoral artery popiteal artery and common carotid artery What creates venous pressure Valves and skeletal muscle pumps What type of vessels conduct blood from capillaries towards the heart Veins note veins have lower blood pressure than arteries