Circulatory system
Capillaries
Connect arterioles with venules
Are sites of metabolic exchanges between blood and tissue
Continues participate in formation of blood- brain-barries
Sinusoidal have continuous basal lamina
Pericytes have discontinuous basal lamina
Pericytes can be found in their wall
Are the smalles vessels in the body
Discontinous capillaries
Are present within bone marrow, liver, spleen
Their basal lamina is highly discontinous
Pericytes can be found in their wall
Have discontinous endothelium but continuous basal lamina
Permit maximal exchange of macromolecules, allow easier movement of cells between tissues
Permit interexchange between between blood and tissues
The endothelial cells are penetrated by numerous fenestrations
Their basal lamina is continuous
Are characteristic for bone marrow
Are typical for spleen
Have large fenestrations within basal lamina
Find true sentences on capillaries
Sinusoids are found in a bone marrow
Continuous form a blood-brain barrier
Are the smallest blood vessels
Muscular arteries
The tunica media contains up to 40 layers of smooth muscle cells
Vasa vasorum are found in the tunica adventitia
External elastic lamina is present only in the larger muscular arteries
The tunica media nerve contains elastic fibers
Known as distributing arteries
Veins
Carry blood back to the heart from the organs
Small and medium sized veins have valves
Their lumen is usually collapsed
Large veins have a well developed tunica intima
Adventitia is the best developed layer
Large veins have relatively thin tunica media
Contain valves
Do not contain external elasticlamina
Purkinje fibers of heart
Branches of atrioventricular node
Branches of bundle of His
Specialized to conduct nerve impulses
Modified cardiac muscle fiber
Endocardium
Is lined with endothelium
Smooth muscle cells and elastic fibers are its part
Subendocardium contains purkinje fibers
Is elongation of tunica intima of large vessels
Endothelial cell which modulate many aspects of normal hemostasis
Is the widest part of the heart
Endothelial cells
Line blood vessels
Mesenchymal origin
Contains desmin and vesmin
Are always located on continuous basement membrane
Act as semipermeable barrier
Contain Weibel- Palade bodies
Secrete paracrine factors, collagen type 2,4 and 5, fibronectin
Elastic artery
Elastic laminae are prominent in tunica media
Consists of vasa vasorum in tunica adventitia
No fibroblasts are present within tunica media
Its internal elastic lamina is the border between tunica intima and tunica media
Does not have tunica media
Include aorta and its branches
Contain smooth muscle in tunica media
Have elastic laminae in tunica intima and media
An internal elastic lamina is present
Find correct features of the vessels
Tunica adventitia of vein is well developed
Pericytes are enclosed in its own basal lamina
Pericytes have mesenchymal origin
Each type of blood vessels is lined with endothelium
Conducting system of heart
Is located within subendocardial layer and myocardium
Is created by modified cardiac muscle cells
Consists of sinoatrial node
Contains purkinje fibers
Atrioventricular node
Atrioventricular bundle of his
Continuous capillaries can be found in
Spleen- sinusoidal capillaries
Blood- brain- barrier
Renal glomerulus- fenestrated capillaries
Liver- sinusoidal capillaries
Bone marrow- sinusoidal capillaries
Vasa vasorum
Tunica adventitia of small capillaries
Tunica adventitia of large vessels
Tunica media of large vessels
Tunica intima of medium arteries
Internal elastic lamina
Fenestrated capillaries with diaphragms are located in
Small intestine
Endocrine glands
Renal glomerulus
Pericytes
Occurs in the capillaries and postcapillary venules
Contain myosin, actin, tropomyosin and protein kinase which are related to contraction
Form the continuous layer on the capillaries
Participate in repair process
Have mesenchymal origin
Have their own basal lamina
Choose sentence related to arterioles
Are less than 0,5 mm in diameter
Media contain one or two layer of smooth muscle cells
Media contain numerous layers of smooth muscle cells
Tunica adventitia is the thickest tunica
External elastic lamina is prominent
Tunica intima
Is always present in blood vessels
Is thicker in elastic arteries than in muscular ones
Endothelial cells lie on the basal lamina
Choose the correct sentence describing veins
Tunica media is much more developed than that within arteries
Have not got any muscles within their wall
The adventitial layer very often contains longitudinal bundles of smooth muscle
Tunica media is less developed than that within arteries
Which statement regarding muscular arteries is correct
They distribute blood to the organs
They contain very prominent internal elastic lamina
They contain poorly developed tunica media
They contain very wavy tunica intima
They do not contain tunica adventitia
They do not contain tunica media
They carry blood from the organs to the heart
Which statement regarding discontinuous capillaries is true
They are characteristic for bone marrow
They are typical of spleen
They are also called sinusoidal
Between endothelial cells there are large perforations
They have large fenestrations within basal lamina
The endothelial cells are fenetrated by numerous fenestrations
Their basal lamina is continuous
They are found in muscle
Which statement regarding veins is true
Large veins contains a well-developed intima
They contain large, collapsed lumen
They carry blood back to the heart from the organs
The adventitial layervery often contains longitudinal bundles of smooth muscle
Tunica media is less developed than within arteries
Tunica media is much more developed than within arteries
They do not contain tunica intima
They contain valves
Which statement regarding continuous capillaries is true
They have many tight, occludin junctions between endothelial cells
They can be found in muscles
The endothelial cells are penetrated by numerous fenestrations
They have large fenestrations within basal lamina
They have no basal lamina
They can be found in bone marrow
Their basal lamina is continuous
They are typical for spleen
Which statement regarding the impulse conducting system of the heart is correct
Sinoatrial node is its part
Subendocardial conducting network is part of it
It is involved in controlling the contraction of the myocardium
Atrioventricular bundle of his is its part
Atrioventricular node is its part
Which statement regarding pericytes is true
They have their own basal lamina
They have mesenchymal origin
They are located along the outside of the capillaries and small venules
They contain myosin, actin, tropomyosin and protein kinase, which are related to contraction
They are located along the outside of elastic artery
They do not have a basal lamina
Which statement regarding capillaries is correct
Continuous participate in formation of blood- tissue- barrier
Are sites of metabolic exchanges between blood and tissues
Fenestrated are also called somatic
No basal lamina in fenestrated capillaries
The continuous capillary is characterized by the absence of basal lamina
Contain smooth muscle cells in their wall
Fenestrated have discontinuous basal lamina
Which statement regarding the wall of the heart is correct
Endocardium is covered by endothelium
Subendocardium contain purkinje fibers
Epicardium is covered by mesothelium
Myocardium is the thickest layer of the heart
Epicardium corresponds to the visceral layer of the pericardium
Pericardium is the membrane that surrounds the heart
Myocardium is mostly composed of cardiac muscles
Myocardium is the thinnest layer of the heart
Which statement regarding the lymphatic vascular system is true
Most tissues with blood vessesl also contain lymphatic capillaries
Large lymphatic vessels have no internal valves
Large lymphatic vessels have numerous smooth muscle in their walls
Lymphatic capillaries consists of single layer of endothelial cells
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