Development of Secondary Vesicles and Eyes in the Embryonic Brain
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Questions and Answers

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

  • The neural tube
  • The neural crest
  • The notochord (correct)
  • The neural plate

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

  • Diencephalon
  • Prosencephalon
  • Telencephalon (correct)
  • Mesencephalon

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

  • The neural folds
  • The neural crest (correct)
  • The neural groove
  • The notochord

What process leads to the formation of the neural tube?

<p>All of the above (D)</p> Signup and view all the answers

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

<p>Diencephalon (C)</p> Signup and view all the answers

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

<p>The three primary brain vesicles (B)</p> Signup and view all the answers

What is the embryonic origin of the adrenal medulla?

<p>Ectoderm (neural crest) (A)</p> Signup and view all the answers

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

<p>Ectoderm (D)</p> Signup and view all the answers

What is the initial embryonic origin of the primitive intestine?

<p>Endoderm and mesoderm (A)</p> Signup and view all the answers

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

<p>Primitive intestine (A)</p> Signup and view all the answers

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

<p>Mesoderm (C)</p> Signup and view all the answers

What is the initial embryonic location of the definitive kidneys?

<p>Sacral level (A)</p> Signup and view all the answers

Which structures develop from the metencephalon?

<p>Pons and adult cerebellum (D)</p> Signup and view all the answers

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

<p>The otic placode on the hindbrain (D)</p> Signup and view all the answers

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

<p>Ectoderm (B)</p> Signup and view all the answers

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

<p>Optic grooves on the lateral wall of the forebrain (B)</p> Signup and view all the answers

Which structures arise from the myelencephalon during embryonic development?

<p>Medulla oblongata (C)</p> Signup and view all the answers

Which germ layer gives rise to the adrenal cortex?

<p>Mesoderm (D)</p> Signup and view all the answers

Which brain vesicle corresponds to the adult cerebellum?

<p>Metencephalon (B)</p> Signup and view all the answers

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

<p>Optic grooves (B)</p> Signup and view all the answers

From which pharyngeal pouches does the middle ear develop?

<p>First and second pharyngeal pouches (D)</p> Signup and view all the answers

What is the embryonic origin of the pituitary gland?

<p>Ectoderm (D)</p> Signup and view all the answers

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

<p>Myelencephalon (C)</p> Signup and view all the answers

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

<p>Notochord (C)</p> Signup and view all the answers

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

<p>Neural crest (C)</p> Signup and view all the answers

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

<p>Telencephalon (D)</p> Signup and view all the answers

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

<p>Diencephalon (C)</p> Signup and view all the answers

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

<p>All of the above (D)</p> Signup and view all the answers

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

<p>Cartilaginous and membranous (A)</p> Signup and view all the answers

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

<p>Endochondral ossification (B)</p> Signup and view all the answers

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

<p>Paraxial mesoderm (B)</p> Signup and view all the answers

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

<p>Caudally (A)</p> Signup and view all the answers

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

<p>Cartilage (A)</p> Signup and view all the answers

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

<p>Myotome (A)</p> Signup and view all the answers

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

<p>Mesoderm (C)</p> Signup and view all the answers

What is the embryonic origin of smooth muscle?

<p>Migrating mesodermal cells (A)</p> Signup and view all the answers

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

<p>Pharyngeal arches (B)</p> Signup and view all the answers

What is the initial embryonic location of the definitive kidneys?

<p>Mesonephros (B)</p> Signup and view all the answers

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

<p>Mesoderm (D)</p> Signup and view all the answers

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

<p>Intramembranous ossification (C)</p> Signup and view all the answers

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

<p>Endochondral ossification (D)</p> Signup and view all the answers

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

<p>Neural crest (C)</p> Signup and view all the answers

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

<p>Cartilage is replaced by bone (C)</p> Signup and view all the answers

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

<p>Neural crest cells (B)</p> Signup and view all the answers

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

<p>Endochondral ossification (B)</p> Signup and view all the answers

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

<p>Neural crest cells (C)</p> Signup and view all the answers

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

<p>Promoting cell proliferation and outgrowth of the limb bud (B)</p> Signup and view all the answers

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

<p>Paraxial mesoderm (B)</p> Signup and view all the answers

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

<p>The mandible and maxilla (D)</p> Signup and view all the answers

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

<p>Endochondral ossification (B)</p> Signup and view all the answers

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

<p>Neural crest cells (D)</p> Signup and view all the answers

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

<p>Lateral plate mesoderm (D)</p> Signup and view all the answers

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

<p>Axial skeleton (C)</p> Signup and view all the answers

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

<p>Intramembranous ossification (C)</p> Signup and view all the answers

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

<p>Lateral plate mesoderm (C)</p> Signup and view all the answers

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

<p>Myotome (B)</p> Signup and view all the answers

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

<p>Dermis of the skin (B)</p> Signup and view all the answers

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

<p>Intramembranous ossification (A)</p> Signup and view all the answers

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