18 Questions
What critical organs are essential for an embryo's future terrestrial life?
Lungs for breathing air, limbs for mobility, a digestive system for processing terrestrial food, and specialized skin for protection.
What distinctive organs are unique to tadpoles in contrast to other vertebrate embryos?
Gills for underwater breathing and a tail for swimming.
What is the function of the Area Pellucida in a chick embryo?
It is the clear, pear-shaped central region where the embryo is found.
What is the Primitive Streak in a chick embryo, and what is its significance?
It is an elongated mass of cells in the center of Area Pellucida, and it is in the process of regression.
What is the role of cell migration in morphogenesis during embryonic development?
Cell migration plays a crucial role in shaping the embryo and forming various structures, such as the neural plate.
What is the significance of the neural plate in embryonic development?
It is a critical structure that gives rise to the nervous system, including the brain and spinal cord.
What is the epidermis in a tadpole, and what is its function?
The epidermis is the layers of darkly stained cells surrounding the embryo, serving as a protective barrier.
Describe the structure and location of the optic cup in a tadpole.
The optic cup is a C-shaped organ composed of the retina and lens, located dorsolateral to the pharynx.
What is the pharynx, and what is its role in the development of a tadpole?
The pharynx is a large chamber of the foregut that forms the gills, located on the ventral region of the embryo.
What is the thyroid gland, and where is it located in a tadpole?
The thyroid gland is a short diverticulum of the pharynx, located lateral to the pharynx.
Describe the external nares and internal nares in a tadpole.
The external nares are circular openings of the nasal passage to the exterior, located beneath the anterior region of the head, while the internal nares are inner openings of the nasal passage, seen as a dot mediolateral to the external nares.
What is the role of cell migration in the formation of embryonic structures in a tadpole?
Cell migration plays a crucial role in the formation of embryonic structures, allowing cells to move to specific locations and differentiate into specialized tissues.
What is the location of the pronephros in the embryo?
lateral to the intestine
What is the function of the notochord in embryonic development?
It provides a clear tubular structure between the spinal cord and the myotomes
What is the significance of the tail fin in the tadpole embryo?
It is a dagger-shaped extension of the tail that appears translucent beneath the ectoderm
What is the relation between the stomach and the intestine in the embryo?
The stomach is a saccular organ that is continuous with the intestine
What is the function of the spinal cord in the embryo?
It is a dense tubular structure dorsolateral to the posterior intestine
What is the significance of the cloaca in the embryo?
It is an enlarged posterior region of the intestine
Learn about the critical organs that facilitate the transition from aquatic to terrestrial life in embryos, including adaptations for breathing, mobility, digestion, and sensory perception. Discover the unique features of tadpoles compared to other vertebrate embryos.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
