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Development of Secondary Vesicles and Eyes in the Embryonic Brain

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58 Questions

What structure gives rise to the future axial skeleton and musculature?

The notochord

Which of the following primary brain vesicles will give rise to the cerebral hemispheres of the adult?

Telencephalon

What structure detaches from the neural plate and remains between the neural tube and the ectoderm?

The neural crest

What process leads to the formation of the neural tube?

All of the above

Which brain vesicle includes the thalamus, hypothalamus, and related structures?

Diencephalon

What structure is formed by the widening of the most cranial portion of the neural tube?

The three primary brain vesicles

What is the embryonic origin of the adrenal medulla?

Ectoderm (neural crest)

Which of the following embryonic structures gives rise to the pineal gland?

Ectoderm

What is the initial embryonic origin of the primitive intestine?

Endoderm and mesoderm

Which of the following embryonic structures gives rise to the salivary glands, liver, gallbladder, and pancreas?

Primitive intestine

What is the embryonic origin of the cartilage, connective tissue, and smooth muscle in the respiratory system?

Mesoderm

What is the initial embryonic location of the definitive kidneys?

Sacral level

Which structures develop from the metencephalon?

Pons and adult cerebellum

What is the first structure to form in the development of the ear?

The otic placode on the hindbrain

Which germ layer gives rise to the anterior lobe of the pituitary gland?

Ectoderm

What are the initial structures that form during the development of the eyes?

Optic grooves on the lateral wall of the forebrain

Which structures arise from the myelencephalon during embryonic development?

Medulla oblongata

Which germ layer gives rise to the adrenal cortex?

Mesoderm

Which brain vesicle corresponds to the adult cerebellum?

Metencephalon

What structure gives rise to the optic vesicles during eye development?

Optic grooves

From which pharyngeal pouches does the middle ear develop?

First and second pharyngeal pouches

What is the embryonic origin of the pituitary gland?

Ectoderm

Which part of the brain corresponds to the adult medulla oblongata?

Myelencephalon

Which of the following embryonic structures gives rise to the axial skeleton and musculature?

Notochord

What embryonic structure detaches from the neural plate and remains between the neural tube and the ectoderm?

Neural crest

Which of the following primary brain vesicles will give rise to the cerebral hemispheres of the adult?

Telencephalon

Which brain vesicle includes the thalamus, hypothalamus, and related structures?

Diencephalon

What is the process that leads to the formation of the neural tube?

All of the above

During embryonic development, the viscerocranium is subdivided into which two portions?

Cartilaginous and membranous

What cellular process generates future bones from the initial models of hyaline cartilage in skeletal development?

Endochondral ossification

Which mesodermal component contributes to the formation of the vertebrae, ribs, and sternum?

Paraxial mesoderm

What direction do the developing limbs initially project during embryonic development before changing orientation?

Caudally

Which skeletal structure forms from the condensations of mesenchyme in limb development?

Cartilage

What is the origin of skeletal muscles in the head, neck, and limbs?

Myotome

Which germ layer gives rise to the connective tissues, including the dermis?

Mesoderm

What is the embryonic origin of smooth muscle?

Migrating mesodermal cells

Which embryonic structures give rise to the bones, muscles, vessels, and nerves of the head and neck?

Pharyngeal arches

What is the initial embryonic location of the definitive kidneys?

Mesonephros

Which germ layer gives rise to most of the skeletal tissue in the body?

Mesoderm

What process leads to the formation of the neurocranium, the bony part of the skull that encloses and protects the brain?

Intramembranous ossification

Which of the following is a key process in the development of the limbs?

Endochondral ossification

What is the embryonic origin of the viscerocranium, the bony part of the skull that forms the face?

Neural crest

Which of the following is a key feature of endochondral ossification, the process by which most long bones form?

Cartilage is replaced by bone

Which embryonic structure gives rise to the bones of the neurocranium?

Neural crest cells

What is the primary mechanism by which the long bones of the limbs are formed during embryonic development?

Endochondral ossification

Which embryonic structure contributes to the formation of the bones of the viscerocranium (facial skeleton)?

Neural crest cells

During limb development, what is the primary function of the apical ectodermal ridge?

Promoting cell proliferation and outgrowth of the limb bud

What is the primary embryonic source of the axial skeleton (vertebrae and ribs)?

Paraxial mesoderm

Which of the following structures arises from the viscerocranium during embryonic development?

The mandible and maxilla

What is the process by which long bones develop from cartilage models?

Endochondral ossification

Which embryonic structure gives rise to the bones of the neurocranium?

Neural crest cells

What is the initial embryonic origin of the upper and lower limb buds?

Lateral plate mesoderm

Which of the following structures develops from the sclerotome portion of the somites?

Axial skeleton

What is the process by which the flat bones of the skull develop?

Intramembranous ossification

Which embryonic structure gives rise to the cartilage models for the future bones of the limbs?

Lateral plate mesoderm

What is the initial embryonic origin of the muscles of the limbs?

Myotome

Which of the following structures develops from the dermatome portion of the somites?

Dermis of the skin

What is the process by which the bones of the skull vault (calvaria) develop?

Intramembranous ossification

Learn about the development of secondary vesicles such as Metencephalon and Myelencephalon, along with the formation of eyes in the embryonic brain. Understand how optic grooves evolve into optic vesicles and further develop into crystalline placodes.

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