Artículo
Abstract:
Neither transient nor steady occlusion of the bilateral carotid arterial trunks had noticeable effects on blood pressure or heart rate of the toad Bufo arenarum Hensel. Distension of isolated carotid labyrints had no circulatory effects, whereas distension of unisolated carotid trunks by fluid infusion caused an increase in blood pressure proportional to the applied pressure. A simultaneous tachycardia was recorded. These circulatory effects seem to depend on the venous return to the heart because carotid distension was followed by a proportional rise in right atrial pressure. Consequently infusion of small volumes of saline into the right atrium also promoted tachycardia and hypertension. These responses seem not to depend on central nervous mechanisms because they persisted after complete deafferentation or removal of the bulbomesencephalic centers.
Registro:
| Documento: | Artículo |
| Título: | Pressure and heart rate responses to raised carotid pressure in the toad |
| Autor: | Segura, E.T. |
| Filiación: | Lab. Fisiol., Comportamiento Inst. Biol. Med. Exp., 1428 Buenos Aires, Argentina |
| Palabras clave: | animal experiment; blood pressure; cardiovascular system; carotid artery pressure; carotid sinus pressoreceptor; heart; heart rate; tachycardia |
| Año: | 1979 |
| Volumen: | 6 |
| Número: | 6 |
| Página de inicio: | H639 |
| Página de fin: | H643 |
| Título revista: | American Journal of Physiology - Heart and Circulatory Physiology |
| Título revista abreviado: | AM. J. PHYSIOL. HEART CIRC. PHYSIOL. |
| ISSN: | 03636135 |
| CODEN: | AJPPD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636135_v6_n6_pH639_Segura |
Citas:
---------- APA ----------
(1979) . Pressure and heart rate responses to raised carotid pressure in the toad. American Journal of Physiology - Heart and Circulatory Physiology, 6(6), H639-H643.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636135_v6_n6_pH639_Segura [ ]
---------- CHICAGO ----------
Segura, E.T. "Pressure and heart rate responses to raised carotid pressure in the toad" . American Journal of Physiology - Heart and Circulatory Physiology 6, no. 6 (1979) : H639-H643.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636135_v6_n6_pH639_Segura [ ]
---------- MLA ----------
Segura, E.T. "Pressure and heart rate responses to raised carotid pressure in the toad" . American Journal of Physiology - Heart and Circulatory Physiology, vol. 6, no. 6, 1979, pp. H639-H643.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636135_v6_n6_pH639_Segura [ ]
---------- VANCOUVER ----------
Segura, E.T. Pressure and heart rate responses to raised carotid pressure in the toad. AM. J. PHYSIOL. HEART CIRC. PHYSIOL. 1979;6(6):H639-H643.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03636135_v6_n6_pH639_Segura [ ]
