Maestra

Describe the three layers in the wall of an artery.
The wall of an artery has three layers: the outer tunica externa is a connective tissue sheath, the tunica media is a middle layer of smoothmuscle, and the endothelial lining of the artery is the tunica intima.
How do arterial walls differ from venous walls?
Arterial walls are thicker and have more smooth muscle than the walls of veins.How does arterial branching in the left side of the neck differ from branching in the right side?
The left common carotid artery branches directly off the aortic arch; the right common carotidartery arises from the brachiocephalic artery, not the aortic arch.
What is an anastomosis?
A connection between vessels that provide blood flow alternate routes to a tissue.
Which arteries inthe brain anastomose with one another?
The circle of Willis is an anastomosis in the brain where branches of the internal carotid artery, the basilar, communicating, and posterior cerebral arteriesconnect as a loop.
What are the three branches of the celiac trunk?
Hepatic, left gastric, and splenic arteries
Which arteries supply the intestines?
The superior and inferior mesenteric arteriessupply the intestines with blood.
What does the external iliac artery become in the lower limb?
The external iliac artery passes into the leg as a femoral artery.
Which two veins combine to formthe superior vena cava?
The right and left brachiocephalic veins join as the superior vena cava.
Where is the cephalic vein?
The cephalic vein begins on the distal region of the arm and passes upthe arm and empties into the subclavian vein.
Where is the superior sagittal sinus?
The superior sagittal sinus is a major drainage of the brain and located between the cerebral hemispheres.
Listthe vessels that drain blood from the lower limb into the inferior vena cava.
The lower limb is drained by the anterior, posterior, and fibular veins, the popliteal vein, the great and small...