Development of the Musculoskeletal system Flashcards
When does the development of the musculoskeletal system begin
4th week
how long does the development of the musculoskeletal system last
through fetal period and even after birth
What does skeletal tissue arise from
mesenchyme (regions differ)
Arises from mesenchyme derived from the scolerotom portion or mesodermal somites
axial skeleton
Arise from mesenchyme derived from the lateral plate mesoderm
appendicular skeleton
pectoral girdle, pelvic girdle and limbs
appendicular skeleton
the axial skeleton is what in origin
segmented
The bones or the face and some of the bones covering the brain arise from
Neural crest cells
Other Cranial bones arise from
Mesoderm
Vertebral column, ribs and neurocranium mesenchyme arise form
paraxial mesoderm
pectoral girdle, pelvic girdle, limbs and sternum mesenchyme is developed from
lateral plate mesoderm
Viserocranium and hyoid mesenchyme is developed form
Neural crest cells
The roof and the base of the skull are developed from
paraxial mesoderm
Calvaria
Skull cap
Where are neural crest cells derived form
ectodermal origin
Anterolateral facial bones
Viserocranium
Bones encasing the brain
Nuerocranium
Nuerocranium is formed from what types of ossification
Membranous and cartilaginous
Neurocranium that is formed by cartilaginous ossification
base of the skull
Neurocranium that is formed by membranous ossification
Calvaria
Lesser wing of the sphenoid, petrous potion of the temporal bone, portions of the ethmoid and occipital bones
base fo the skull
membranous flexible joints of the skull in infants
sutures
enlarged membranous space where more than 2 bones meet
fontanelles
Area where the 2 parietal bones and frontal bones meet
anterior fontanelle