Splanchnocranium in Vertebrates Quiz

What is the primary function of the splanchnocranium in vertebrates?

What is the embryonic source of the splanchnocranium?

What are the pharyngeal arches of aquatic vertebrates associated with?

What is the term used to describe the pharyngeal arches of aquatic vertebrates?

What is the number of articulated elements per side of a pharyngeal arch?

What is the function of the mandibular arch?

What is the most dorsal element of a pharyngeal arch?

What is the origin of the cells that differentiate into the pharyngeal arches?

What is the term used to describe the splanchnocranium in amphioxus?

What is the name of the mistaken view that inspired the name 'visceral' cranium?

Splanchnocranium in Vertebrates

Primary function includes forming the skeleton of the face and jaws, and supporting respiratory structures in vertebrates.
Embryonic source derived from neural crest cells and mesodermal origin, contributing to the development of splanchnocranium structures.

Aquatic Vertebrates and Pharyngeal Arches

Pharyngeal arches associated with the development of gills and structures related to respiration and feeding in aquatic vertebrates.
The term "branchial arches" is used to describe these structures in aquatic vertebrates.

Structure and Function of Pharyngeal Arches

Each pharyngeal arch consists of six articulated elements per side in various species.
The mandibular arch serves to support the jaw and is crucial in the mechanism of feeding.

Key Components and Origin

The most dorsal element of a pharyngeal arch is known as the epibranchial element.
Cells that differentiate into pharyngeal arches originate from neural crest cells during embryonic development.

Additional Terminology

In amphioxus, the term "splanchnocranium" is referred to as the "visceral skeleton."
The term "visceral" cranium stems from a historical misunderstanding regarding the function and classification of these structures.

Test your knowledge about the splanchnocranium and its role in vertebrates, including its association with gills, respiratory muscles, and jaws. Explore the embryological development of the splanchnocranium and its relation to the digestive tract.