13.1 POJA-L4611+4612+4631+La-0317/4615+4616. Transitional arteries (human).
13.1 POJA-L4611+4612+4631+La-0317/4615+4616
Title: Transitional arteries (human)
Description:
(A, B, C): Staining: (A) HE, (B) Orcein, (C) Azan. Axillar arteries are transitional forms of elastic arteries to muscular types. The elastic membranes in these arteries are thinner and shorter but their number is increased. The SMC layer of the media is less developed. The intima shows longitudinal oriented SMCs. Generally, arteries exposed to multiple bending contain relatively many longitudinal SMCs (e.g. popliteal artery, axillar artery).
(A-B): (1) Intima (widened due to some edema and ageing). (2) Media with elastic lamellae as well as SMCs. (3) Adventitia.
(C): Proximal part of axillar artery, detail from intima and upper part of media. (1) Internal elastic membrane (IEL). (2) Elastic lamellae in media. (3) SMC in media.
(D1-D2-E): (D) Mallory, neonate. (E) Trichrome (Goldner), adult. Pulmonary arteries: Due to reduction of muscular and elastic elements the extrapulmonary artery (1mm diameter) is an elastic artery with a thinner wall. Intralobularly the artery becomes muscular. The blood pressure is low, with blood low in oxygen and high in carbon dioxide. Apart from elastic membranes and networks of elastic fibers there is an increased amount of collagen, while the SMC are less regular orientated? Proximally the pulmonary artery contains cardiomyocytes in its wall. The pulmonary vein contains oxygen-rich blood and has a well-developed SMC media. In the mouse cardiomyocytes are found in the media.
(D1-D2): Survey and detail (1) Intima with internal elastic lamina (IEL). (2) Elastic membranes in media. (3) Adventitia. (4) Adventitia continuous with surrounding connective tissue.
(E): Cross-section of vessel: (1) Intima, (2) Elastic membranes alternate with layers of SMC (arrow) in media. Variation of circular and cross-sectioned SMC in the wall is the result of the twisted blood vessel. (3) Adventitia.
Keywords/Mesh: vascularization, blood vessel, transitional artery, hybrid artery, elastic artery , muscular artery, pulmonary artery, histology, POJA collection
Title: Transitional arteries (human)
Description:
(A, B, C): Staining: (A) HE, (B) Orcein, (C) Azan. Axillar arteries are transitional forms of elastic arteries to muscular types. The elastic membranes in these arteries are thinner and shorter but their number is increased. The SMC layer of the media is less developed. The intima shows longitudinal oriented SMCs. Generally, arteries exposed to multiple bending contain relatively many longitudinal SMCs (e.g. popliteal artery, axillar artery).
(A-B): (1) Intima (widened due to some edema and ageing). (2) Media with elastic lamellae as well as SMCs. (3) Adventitia.
(C): Proximal part of axillar artery, detail from intima and upper part of media. (1) Internal elastic membrane (IEL). (2) Elastic lamellae in media. (3) SMC in media.
(D1-D2-E): (D) Mallory, neonate. (E) Trichrome (Goldner), adult. Pulmonary arteries: Due to reduction of muscular and elastic elements the extrapulmonary artery (1mm diameter) is an elastic artery with a thinner wall. Intralobularly the artery becomes muscular. The blood pressure is low, with blood low in oxygen and high in carbon dioxide. Apart from elastic membranes and networks of elastic fibers there is an increased amount of collagen, while the SMC are less regular orientated? Proximally the pulmonary artery contains cardiomyocytes in its wall. The pulmonary vein contains oxygen-rich blood and has a well-developed SMC media. In the mouse cardiomyocytes are found in the media.
(D1-D2): Survey and detail (1) Intima with internal elastic lamina (IEL). (2) Elastic membranes in media. (3) Adventitia. (4) Adventitia continuous with surrounding connective tissue.
(E): Cross-section of vessel: (1) Intima, (2) Elastic membranes alternate with layers of SMC (arrow) in media. Variation of circular and cross-sectioned SMC in the wall is the result of the twisted blood vessel. (3) Adventitia.
Keywords/Mesh: vascularization, blood vessel, transitional artery, hybrid artery, elastic artery , muscular artery, pulmonary artery, histology, POJA collection