Cardiovascular system Flashcards
(42 cards)
At what level of the vascular tree does gas exchange occur?
Capillary
Which of the following is NOT a distinguishing feature between larger veins and arteries?
The lumen of a vein is smaller than the lumen of an artery
In which structure are things moved across the epithelium via pinocytotic vesicles?
Continuous capillaries
What is a thoroughfare which is an intermediate between an arteriole and capillary?
Metarteriole
Which layer in an artery contains the endothelium?
Tunica intima
What do you call the simple squamous epithelium that lines the blood vessels?
Endothelium
In which of the following is a portal system NOT found?
Muscle
What is the brachial artery?
Muscular artery
Which of the following is a distinct structure found specifically in the liver, spleen, and bone marrow?
Sinusoidal capillaries
Which layer in an artery is primarily smooth muscle?
Tunica media
A pronounced internal elastic membrane and external elastic membrane are distinguishing characteristics of which type of vessel?
Muscular artery
Which of the following constitutes the microvascular bed of a tissue?
Capillaries, arterioles, and post capillary venules
What are wide, leaky capillaries called?
Sinusoidal capillaries
What is a direct route between arteries and veins called?
AV anastomoses
Which layer in an elastic artery is the largest thickest?
Tunica media
In which of the following is an arterial portal system found?
Kidney
What are vasa vasorum?
Blood vessels
Which structure has only a few layers of muscle in the tunica media?
Arteriole
Which layer in a large vessel contains the nervi vascularis?
Tunica externa
What vessel regulates the amount of blood going into a capillary bed?
Arteriole
What is the aorta?
Elastic artery
What are most of the named arteries in the body?
Muscular artery
Which structure contains pores?
Fenestrated capillaries
Which one of the following is a pluripotential cell that is prevalent around post capillary venules?
Pericyte
