13.1 POJA-L4317+4617+4604+4605+460 Arterial constrictors: penile - coronary vessels (human)
13.1 POJA-L4317+4617+4604+4605+4606
Title: Arterial constrictors: penile - coronary vessels (human)
Description:
(A): Arterial constrictor e.g. helicine artery (penis), elastica (Masson), adult [see for comparable details (B)]. Few intimal cross-sectioned smooth muscle cells (SMC) (1) surrounded by dark-stained elastic fragments and a discontinuous internal elastic membrane (IEL), a media with smooth muscle cells (SMC) (2) and a fine-fibrillary collagenous adventitia (3) followed by an outer layer of 3-D woven coarse collagen fibres with dense-stained short elastic fibres (4) close to cross-sectioned smooth muscle bundles (5) of the trabecula (penile cavernous body). (6) Cross-sectioned nerve bundles.
(B): Arterial constrictor e.g. internal pudendal artery, elastica (Masson), adult. This artery has an intimal cushion (1), a media (2) and an adventitia (3) with vasa vasorum (*) closely adhered to dense collagenous tissue with long elastic fibres (4). The internal pudendal artery branches in several supplying arteries of the penis. Generally these arteries within the erectile tissue (penile corpus spongiosum) are extra supported by a band of dense collagen tissue and dispersed elastic fibres to create an elastic medium against increased pressure during contractions.
(C-D): Survey and detail of arterial constrictors e.g. coronary vessels, reticulin-Weigert, young adult. Three coronary arteries (*) with intimal cushions (1) and reinforced with smooth muscle cells in the intima and media. Media contains circular and longitudinal smooth muscle bundles extended in the adventitia, coronary vein (v). The constrictor arteries in the heart are constructed similarly as in the penis in (A, B).
(E): Large descending coronary artery (longitudinal section), Haematoxylin- eosin, autopsy, senium. The intima (1) is exceptional thickened with longitudinal SMC. The media (2) contains circular muscle fibres. (3) Adventitia.
Background: Arterial constrictors are specialised arteries with muscular cushions in the intima to regulate the blood flow. These constrictors are present in areas with regular blood pressure fluctuation such as in the heart muscle (systole-diastole), penile tissue (intumescence-detumescence).
Keywords/Mesh: cardiovascular system, vascularisation, vascular constrictor, arterial constrictor, coronary artery, penis artery, histology, POJA collection
Title: Arterial constrictors: penile - coronary vessels (human)
Description:
(A): Arterial constrictor e.g. helicine artery (penis), elastica (Masson), adult [see for comparable details (B)]. Few intimal cross-sectioned smooth muscle cells (SMC) (1) surrounded by dark-stained elastic fragments and a discontinuous internal elastic membrane (IEL), a media with smooth muscle cells (SMC) (2) and a fine-fibrillary collagenous adventitia (3) followed by an outer layer of 3-D woven coarse collagen fibres with dense-stained short elastic fibres (4) close to cross-sectioned smooth muscle bundles (5) of the trabecula (penile cavernous body). (6) Cross-sectioned nerve bundles.
(B): Arterial constrictor e.g. internal pudendal artery, elastica (Masson), adult. This artery has an intimal cushion (1), a media (2) and an adventitia (3) with vasa vasorum (*) closely adhered to dense collagenous tissue with long elastic fibres (4). The internal pudendal artery branches in several supplying arteries of the penis. Generally these arteries within the erectile tissue (penile corpus spongiosum) are extra supported by a band of dense collagen tissue and dispersed elastic fibres to create an elastic medium against increased pressure during contractions.
(C-D): Survey and detail of arterial constrictors e.g. coronary vessels, reticulin-Weigert, young adult. Three coronary arteries (*) with intimal cushions (1) and reinforced with smooth muscle cells in the intima and media. Media contains circular and longitudinal smooth muscle bundles extended in the adventitia, coronary vein (v). The constrictor arteries in the heart are constructed similarly as in the penis in (A, B).
(E): Large descending coronary artery (longitudinal section), Haematoxylin- eosin, autopsy, senium. The intima (1) is exceptional thickened with longitudinal SMC. The media (2) contains circular muscle fibres. (3) Adventitia.
Background: Arterial constrictors are specialised arteries with muscular cushions in the intima to regulate the blood flow. These constrictors are present in areas with regular blood pressure fluctuation such as in the heart muscle (systole-diastole), penile tissue (intumescence-detumescence).
Keywords/Mesh: cardiovascular system, vascularisation, vascular constrictor, arterial constrictor, coronary artery, penis artery, histology, POJA collection