Vasculature - Workshop Flashcards
(33 cards)
Which is part of the media of the vascular wall?
A. Endothelium
B. Smooth muscle cells
C. Vasa vasorum
D. Subendothelial C.T.
B
What is a dissecting aortic aneurysm?
A split in the middle of the tunica media
Which type of artery is shown here?
Muscular artery
When LDL is oxidized during ateriosclerosis, it is then taken up by __________.
macrophages
What is the definition of resistance?
The force against which the heart pumps
What is featured in this image?
Arteriole
What two factors are required for vasoconstriction?
A. Calmodulin/MLCK
B. Calmodulin/MLCP
C. Myosin/MLCP
A
Which is correct?
A. Calmodulin stimulates MLCK; cAMP inhibits MLCK
B. Calmodulin stimulates MLCK; cAMP stimulates MLCK
C. Calmodulin inhibits MLCK; cAMP inhibits MLCK
D. Calmodulin inhibits MLCK; cAMP stimulates MLCK
A
Cytosolic Ca2+ is increased via:
A. Norepinephrine
B. G alpha i receptor
C. decreases in cAMP
D. IP3 pathway
D
Which of the following is a local mechanism of vasoconstriction?
A. Norepinephrine
B. Myogenic stretch response
C. Angiotensin II
D. Vasopressin
E. None of these
B
Myosin light chain phosphatase is activated by:
A. increasing cGMP
B. increasing cAMP
C. increasing Rho-kinase
D. decreasing cGMP
A
Which is NOT an inhibitor of MLCK?
A. Epinephrine
B. Adenosine
C. Nitric oxide
D. Prostacyclins
C (NO activates MLCP)
Which is true regarding capillary blood flow regulation?
A. Precapillary sphincters are usually open
B. Metarterioles act as a dilating arteriole
C. Thoroughfare channels contain no smooth muscle
D. A-V anastomoses prevent bypass of arteries into capillary beds
C
Which type of tissue is featured here?
Cardiac muscle
Which type of capillary is featured here?
Continuous capillary - within cardiac muscle
The top “4” label refers to:
A. Schwann cell
B. Nerve
C. Mitochondria
D. T-tubule
D
The top “2” label refers to:
A. Schwann cell
B. Nerve
C. Mitochondria
D. T-tubule
B
Which type of capillary is featured here?
Fenestrated capillary
Fenestrated capillaries are found:
A. In the endocrine gland
B. In the thymus gland
C. In the bones
D. In the skeletal muscle
A
Which type of capillary is featured here?
Discontinuous/sinusoidal
The arrow in this image indicates what component in the liver?
LDL particle
Which is true regarding venules?
A. Lesser diameter lumen than companion arteriole
B. 1 incomplete layer of smooth muscle in media
C. Small lumen diameter compared to wall thickness
D. More than one of the above
B
The following image features:
venule
Which is involved in the “adhesion” of WBC extravasation?
A. L-selectin
B. PECAM-1(d6)
C. Integrins: LFA-1 and Mac-1
D. PECAM-1(d1/2)
C
