Notes in Ectoderm_Mesoderm

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Published 08/28/2024 When does the mesodermal skeleton system develop?{{c1:: Between third and fourth week}}
Published 08/28/2024 Sclerotome becomes {{c1:: cartilage and bone}}
Published 08/28/2024 Myotome becomes {{c1:: muscle}}
Published 08/28/2024 Dermatome becomes {{c1::skin}}
Published 08/28/2024 What are somites?organized segments from the paraxial mesoderm that later differentiate into {{c1::sclerotome}}, {{c1::myotome}} and {{c1::dermatome}}
Published 08/28/2024 BMP4 expression by the {{c1::ectodermal}} layer causes secretion of {{c2::WNT}} transcription factor. These growth factors cause expression …
Published 08/28/2024 {{c1::MYOD}} is a muscle specific gene that causes differentiation of limp and body wall muscles from dorsolateral somite region.
Published 08/28/2024 What muscles form from the epimere?{{c1:: back muscles}}
Published 08/28/2024 Which muscles form from the hypomere? {{c1:: Muscles of body wall, including rectus abdominis and limbs}}
Published 08/28/2024 Spinal nerves innervate developing {{c1::skeletal muscles}} (dorsal epipemeres and vetral hypomeres) and overlying {{c1::dermatomes}}
Published 08/28/2024 Prune belly syndrome (Eagle-Barrett syndrome) rpimarily afects {{c1::males}}. 
Published 08/28/2024 Features of prune belly syndrome are: {{c1:: 1. Poorly developed/absent abdominal muscles (hypomere).2. Bilateral cryptorchidis - testes stay in …
Published 08/28/2024 The {{c1::posterior}} myotomes condensations develop into extensor& supinator musculatore of upper limbs and extensor & abductor musculat…
Published 08/28/2024 The {{c1::anterior}} myotomes condensations develop into flexor + pronator musculatore of upper limbs and flexor + adductor musculature of {…
Published 08/28/2024 The {{c1::neurocranium}} supports and protects the brain
Published 08/28/2024 Cranial vault is the membranous portion of the neurocranium which consists of the {{c1::flat bones}} of the skull
Published 08/28/2024 Chondrocranium is the cartilaginous portion of the neurocranium that consists of the {{c1::base}} of the skull
Published 08/28/2024 The frontal part of the skull and face is derived from {{c1:: paraxial mesoderm}}
Published 08/28/2024 The parietal, occipital and posterior base of the skull is derived from {{c1:: neural crest cells}}
Published 08/28/2024 The viscerocraniums or visceral skeleton consists of bones of {{c1::the face}} involving the {{c1::pharyngeal}} arches and it develops from {{c2:…
Published 08/28/2024 Limb development begins at about the {{c1::fifth week}} and is established by the {{c2:: eight week}}
Published 08/28/2024 What is the apical ectoderm ridge?{{c1:: It's the thickened ectoderm structure at the tip of the limb that acts as a major signaling center to ensure …
Published 08/28/2024 Ichthyosis Vulgaris is an autosomal {{c1:: dominant}} disorder
Published 08/28/2024 Ichthyosis is characterized by {{c1:: dead skin cells that accumulate in thick dry scales that look like fish scales on skin surfaces. }} 
Published 08/28/2024 Ichthyosis Vulgaris is causes by a loss of function gene mutation which leads to a defective production of {{c1:: Filaggrin}}
Published 08/28/2024 Junctional Epidermolysis is an autosomal {{c1::recessive}} disorder
Published 08/28/2024 Junctional Epidermolysis Bullosa (autosomal {{c2::recessive}}) is caused by a mutation that disrupts the production of {{c1:: laminin}}
Published 08/28/2024 Features of Junctional Epidermolysis Bullosa include{{c1:: friable skin and mucous membrane blisters prone to rupture and erosion after scratching or …
Published 08/28/2024 Llameral Ichthyosis is an autosomal {{c1:: recessive}} condition present at birth
Published 08/28/2024 Lamellar Ichthyosis is caused by mutations in the {{c1::epidermal keratin}} layer
Published 08/28/2024 Lamellar Ichthyosis (autosomal {{c2::recessive}}) patients are characterized with {{c1:: newborns encases at birth by a collodian (taunt, shiny a…
Published 08/28/2024 Epidermolytic Ichthyosis is an {{c1::autosomal dominant}} condition present at birth
Published 08/28/2024 Epidermolytic Ichthyosis is caused by mutations in {{c1::keratin genes}} leading to blisters with impaired barrier function.
Published 08/28/2024 Epidermolytic Ichthyosis is characterized by {{c1:: erythrodema, blisters and skin erosions which repair by varying degrees of hyperkeratosis.}}
Published 08/28/2024 Harlequin Ichthyosis (fetus) is an autosomal {{c1::recessive}} skin condition due to a mutation in the {{c2:: ABCA12}} gene which normally e…
Published 08/28/2024 Harlequin Ichthyosis is characterized by {{c1:: Hard, shiny plates (armor-like) of thick hyperkeratoric scales. It's thickened skin also prevents…
Published 08/28/2024 {{c1::image-occlusion:rect:left=.1113:top=.4657:width=.1578:height=.0402:oi=1}}{{c2::image-occlusion:rect:left=.3713:top=.2759:width=.1733:height=.038…
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