Embryology musculoskeletal Flashcards
intermediate mesoderm gives rise to
urinary and genital systems
paraxial mesoderm organized into _______ that give rise to ______
somites, vertebral column, muscle, dermis
lateral plate mesoderm divides into ___ and ____
somatic mesoderm, splanchnic mesoderm
give a basic definition for induction
one tissue signals another tissue to perform a task
leading point of growth on a limb bud
apical ectodermal ridge
axis of limb growth
proximal-distal
growing part of limb bud is called
progress zone
experimental removal of apical ectodermal ridge results in
distal truncation of the limb
how does a limb bud develop digits
selective apoptosis
specialized mass in the base of the limb bud that regulates development along the anterior posterior axis
zone of polarizing activity
formation of flat bones of skull and bones of face
intramembranous ossification
in intramembranous ossification, ________ differentiates into __________
mesenchyme into osteoblasts
osteoblasts in intramembranous ossification produce this kind of bone
what is woven?
woven bone remodels into
lamellar bone
this is the formation of long bones, vertebral column, pelvis, and the base of the skull
endochondral ossification
in endochondral ossification, _________ cells differentiate into __________
mesenchyme into chondroblasts
two places that retain cartilage at the endpoint of endochondral ossification
articular surface and epiphyseal plate
epimere develops into
intrinsic back muscles
hypomere develops into
limb and body wall muscles
in limb growth, the dorsal condensation becomes
the extensor muscles
in limb growth, the ventral condensation becomes
flexor muscles
the area of skin supplied by a single spinal nerve and its dorsal root ganglion
dermatome
part of a limb is missing
meromelia
an entire limb is missing
amelia
