Histology 2A
Histology 2A Quiz
Test your knowledge of histology with our comprehensive quiz focused on the intricate structures and fun
- Covers a wide array of histological topics
- Multiple choice questions for thorough assessment
- Enhance your understanding of vascular structures and their fun
ctions
Capillaries:
Connect arterioles with venules
Are sites of metabolic exchanges between blood and tissue
Continuous capillaries participate in the formation of the blood-brain-barrier
Sinusoids have discontinuous basal lamina
Pericytes can be found in the wall of capillaries and small venules
Are the smallest vessels of the body
Discontinuous capillaries:
Are present within the bone marrow, liver and spleen
Their basal lamina is highly discontinuous
Pericytes are found in their walls
Have discontinuous endothelium but continuous basal lamina
Permits maximal exchange of macromolecules and allow easier movement of cells between tissues
Discontinuous capillaries:
Permits interexchange between blood and tissues
The endothelial cells are penetrated by numerous fenestrations
Their basal lamina is continuous
Are characteristic for the bone marrow
Are typical for the spleen
Have large fenestrations within the basal lamina
What is correct regarding capillaries?
Sinusoids are located in the bone marrow
Continuous capillaries form a blood-brain barries
Are the smallest blood vessels
Are the largest distributing vessels in the human body
Muscular arteries:
The tunica media contains up to 40 layers of smooth muscle cells; for contraction and relaxion
Vasa vasorum is present in the tunica adventitia
External elastic lamina is present only in the larger muscular arteries
The tunica media never contains elastic fibers
Are known as distributing arteries
Veins:
Carry blood back to the heart from organs
Small and medial 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 a relatively thin tunica media
Contains valves
Does not contain external elastic lamina
What is correct regarding purkinje fibers of the heart?
Branches of atrioventricular node
Branches of Bundle of His
Specialized to conduct nerve impulses
Modified cardiac muscle fibers
Endocardium:
Is lined with endothelium
Smooth muscle cells and elastic fibers are present
Subendocardium contains purkinje fibers
Is an elongation of the tunica intima of large vessels
Endothelial cells which modulate many aspects of normal hemostasis
Is the widest part of the heart
Endothelial cells:
Line blood vessels
Have mesenchymal origin
Contains desmin and vesmin
Are always located on the continuous basement membrane
Act as a semipermeable barrier
Contains Weibel-Palade bodies
Secrete paracrine factors, collagen II, IV and I, and fibronectin
The elastic artery:
Elastic laminae are prominent in the tunica media
Consists of vasa vasorum in the tunica adventitia
No fibroblasts are present wihtin the tunica media
Its internal elastic lamina is the border between the tunica intima and media
The elastic artery:
Does not contain a tunica media
Include the aorta and its branches
Contains smooth muscle cells in the tunica media
Have elastic laminae in the tunica intima and media
An internal elastic lamina is present
What is correct regarding the vessels?
Tunica adventitia of veins are best developed
Pericytes are enclosed in their own basal lamina
Pericytes have mesenchymal origin
Each type of blood vessel is lined with endothelium
Tunica media is the best developed layer of veins
Pericytes derive from the ectoderm
The conducting system of the heart:
Is located within the subendothelial layer and myocardium
Is created by modified cardiac muscle cells
Consists of the sinoatrial node
Contains purkinje fibers
Atrioventricular node
Atrioventricular bunde of His
Capillaries - can be found in
Sinusoidal capillaries - spleen
Continuous capillaries - blood-brain-barrier
Fenestrated capillaries - renal glomerulus
Sinusoidal capillaries - liver
Sinusoidal capillaries - bone marrow
Continuous capillaries - bone marrow
Vasa vasorum is located in:
Tunica adventitia of small capillaries
Tunica adventitia of large vessels
Tunica media of large vessels
Tunica intima of medium arteries
Internal elastic lamina
External elastic lamina
Fenestrated capillaries with diaphragms are located in:
Small intestine
Endocrine glands
Renal glomerulus
What is true regarding pericytes?
Occurs in the capillaries and postcapillary venules
Contains myosin, actin, tropomyosin and protein kinase which are related to contraction
Form the continuous layer of the capillaries
Participate in the repair process
Have mesenchymal origin
Have their own basal lamina
Which sentence relates to arterioles?
Are less than 0,5 mm in diameter
Tunica media contain one or two layers of smooth muscle cells
Tunica media contains 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 arteries
Endothelial cells lie on its basal lamina
What is true regarding veins?
Tunica media is much more developed than in arteries
Have not got any muscle tissue within their walls
The adventitial layer very often contains longitudinal bundles of smooth muscle
Tunica media is less developed than within arteries
What is true regarding muscular arteries?
They distribute blood to the organs
They contain very prominent internal elastic lamina
They have a poorly developed tunica media
They contain a very wavy tunica intima
They carry blood from the organs to the heart
What is true regarding discontinuous capillaries?
They are characteristic for the bone marrow
They are typical for the spleen
They are also called sinusoidal arteries
Between endothelial cells there are large perforations
They have large fenestrations within their basal lamina
The endothelial cells are penetrated by numerous fenestrations
Their basal lamina is continuous
They are found within muscle tissues
What is true regarding veins?
Large veins have a well developed tunica intima
They contain a large, collapsed lumen
They carry blood back to the heart
The adventitial layer often contains longitudinal bundles of smooth muscle
The tunica media is less developed than within arteries
Tunica media is much more developed than within arteries
They do not contain a tunica intima
They contain valves
What is true regarding continuous capillaries?
They have many tight, occludin junctions between endothelial cells
They can be found in the muscle tissue
The endothelial cells are penetrated by numerous fenestrations
They have large fenestrations within their basal lamina
They do not poccess a basal lamina
They are present in the bone marrow
Their basal lamina is continuous
They are typical for the spleen
What is true regarding the impulse conducting system of the heart?
Sinoatrial node is its part
Subendocardial conducting network is part of it; purkinje fibers
Is involved in controlling the contractions of the myocardium
Atrioventricular bundle of His is its part
Atrioventricular node is its part
What is correct regarding pericytes?
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 relates to contraction
They are located along the outside of elastic arteries
They do not have a basal lamina
Only found at capillaries and small venules
What is true regarding capillaries?
Continuous capillaries participate in the formation of blood-tissue barrier
Are sites of metabolic exchanges between blood and tissues
Fenestrated are also called somatic
Fenestrated are also called visceral
There are no basal lamina in fenestrated capillaries
Contains smooth muscle cells within their wall
Fenestrated capillaries have discontinuous basal lamina
Continuous are also called somatic
What is true regarding the wall of the heart?
Endocardium is covered by endothelium
Subendocardium contains 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 which surrounds the heart
Myocardium is mostly composed of cardiac muscle
Myocardium is the thinnest layer of the wall of the heart
What is true regarding the lymphatic vascular system?
Most tissues with blood vessels also contains lymphatic capillaries
Large lymphatic vessels have no internal valves
Large lymphatic vessels have numerous smooth muscle cells in their walls
Lymphatic capillaries consists of a single layer of endothelial cells
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