The development of the pharynx and aortic arches of the turtle, with a note on the fifth and pulmonary arches of mammals

Shaner, Ralph F.

doi:10.1002/aja.1000290402

Cited by 18 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Shortly after the appearance of cardiac pulsation, isolated proto-vessels appear in the form of the aortic arches and major veins. These vessels rapidly merge and assemble into a simple but continuous interconnected blood circuit (Shaner, 1921;Johnson, 1922). The appearance of one-way cardiac valves (described above), followed by venous valves in the peripheral circulation, enables the establishment of a definitive one-way circulation through the growing heart.…”

Section: Aortic Arch Developmentsupporting

confidence: 43%

Development of cardiac form and function in ectothermic sauropsids

Crossley

Burggren

2009

Journal of Morphology

View full text Add to dashboard Cite

Evolutionary morphologists and physiologists have long recognized the phylogenetic significance of the ectothermic sauropsids. Sauropids have been classically considered to bridge between early tetrapods, ectotherms, and the evolution of endotherms. This transition has been associated with many modifications in cardiovascular form and function, which have changed dramatically during the course of vertebrate evolution. Most cardiovascular studies have focused upon adults, leaving the development of this critical system largely unexplored. In this essay, we attempt a synthesis of sauropsid cardiovascular development based on the limited literature and indicate fertile regions for future studies. Early morphological cardiovascular development, i.e., the basic formation of the tube heart and the major pulmonary and systemic vessels, is similar across tetrapods. Subsequent cardiac chamber development, however, varies considerably between developing chelonians, squamates, crocodilians, and birds, reflected in the diversity of adult ventricular structure across these taxa. The details of how these differences in morphology develop, including the molecular regulation of cardiac and vascular growth and differentiation, are still poorly understood. In terms of the functional maturation of the cardiovascular system, reflected in physiological mechanisms for regulating heart rate and cardiac output, recent work has illustrated that changes during ontogeny in parameters such as heart rate and arterial blood pressure are somewhat species-dependent. However, there are commonalities, such as a beta-adrenergic receptor tone on the embryonic heart appearing prior to 60% of development. Differential gross morphological responses to environmental stressors (oxygen, hydration, temperature) have been investigated interspecifically, revealing that cardiac development is relatively plastic, especially, with respect to change in heart growth. Collectively, the data assembled here reflects the current limited morphological and physiological understanding of cardiovascular development in sauropsids and identifies key areas for future studies of this diverse vertebrate lineage.

show abstract

Section: Aortic Arch Developmentsupporting

confidence: 43%

Development of cardiac form and function in ectothermic sauropsids

Crossley

Burggren

2009

Journal of Morphology

View full text Add to dashboard Cite

show abstract

“…It arises as a ventral outgrowth of the dorsal aorta and blends into a ventral splanchnic plexus, before it connects to the aortic sac (DeRuiter et al 1989). This ventral aortic sprout, which in lower vertebrates serves as a common efferent trunk of both fifth and sixth arch arteries (Shaner 1921;Fishman et al 1985), is thought to eventually differentiate into the DA after the acquisition of a tunica media.…”

Section: Marsupialsmentioning

confidence: 47%

Comparative anatomy and ontogeny of the ductus arteriosus, a vascular outsider

Bergwerff¹,

DeRuiter²,

Groot³

1999

Anatomy and Embryology

View full text Add to dashboard Cite

In its function of separating pulmonary and systemic arterial blood flow, the ductus arteriosus, which connects both circuits, either closes permanently at a certain stage in development or attains a capacity to close and reopen depending on the physiological needs in certain species. In air-breathing vertebrates varying from lungfish to mammals, the ductus arteriosus derives from the sixth pharyngeal arch artery, and in preparation for its specific task, undergoes its own unique differentiation programme, starting early in development. To date, the mechanisms involved in defining this unique status, as compared to the other great arteries, are unclear. This review clarifies some of the elusiveness of the ductus arteriosus. It includes a comparative description of this artery in species exemplifying the different classes of air-breathing vertebrates, and illustrates similarities and differences in morphogenesis and closure mechanisms among the species. It also deals with possible influences of vascular innervation and with congenital anomalies in which the ductus arteriosus is involved. New data suggest that HOXB5 expression in the neural crest along the dorsal half of the sixth arch artery may be involved in the instigation of ductus arteriosus differentiation.

show abstract

“…1906], porcupine [Struthers, 1930]. Tarsius spectrum [Hafferl, 1916], chicken [Locy, 1906], and turtle [Shaner, 1921;Johnson, 1922].…”

Section: Discussionmentioning

confidence: 46%

A Fifth Pharyngeal Arch Artery Does Not Exist in Rat

Knackstedt

Mangold²

1997

Cells Tissues Organs

View full text Add to dashboard Cite

The development of the caudal pharyngeal arch arteries was studied in perfused rat embryos in the interval of embryonic day 12½to embryonic day 13¾ using semithin serial sections and computer-aided 3-dimensional reconstructions. The fourth pharyngeal arch artery was already developed at embryonic day 12½. The sixth developed from cystic enlarged vascular sprouts at embryonic day 13¾. A real fifth pharyngeal arch artery was not found between the fourth and sixth artery. Instead a vascular plexus was present at embryonic day 12½which was interposed between the epithelial sheets of the fourth pharyngeal pouch and the lower cervical sinus. At the onset of development this plexus arose ventrally and dorsally from the fourth pharyngeal arch artery only. Subsequent to the development of the sixth pharyngeal arch artery, vascular branches arose ventrally and dorsally from this artery, too. The plexus underwent incipient involution from embryonic day 13¼. It arose either from the fourth or the sixth pharyngeal arch artery only from embryonic day 13¾. It drained to the venous system. Branches of the plexus which ran towards the epithelial sheet of the lower cervical sinus became prominent.

show abstract

The development of the pharynx and aortic arches of the turtle, with a note on the fifth and pulmonary arches of mammals

Cited by 18 publications

References 6 publications

Development of cardiac form and function in ectothermic sauropsids

Development of cardiac form and function in ectothermic sauropsids

Comparative anatomy and ontogeny of the ductus arteriosus, a vascular outsider

A Fifth Pharyngeal Arch Artery Does Not Exist in Rat

Contact Info

Product

Resources

About