Biology Questions
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When do fontanelles disappear and begin to ossify?
Congenital fusion of one or more vertebrae. Patients present with a short neck, low hairline, and restricted neck movement
When do we see the formation of three primary ossifications?
The annulus fibrous part of the intervertebral discs is formed by what?
How many primary ossification centers are there for C2 (axis)?
When do the secondary ossification centers appear?
When do we see the development of the axial skeleton?
When does ossification of the vertebral column begin?
What types of bones develop from enchondral ossification?
What are the two stages of the changes to condensed mesenchyme?
WAhen does ossification of the vertebral column end?
The optimum time to perform a complete fetal echo is..
When do chondrification centers begin to appear in the mesenchymal vertebrae?
When do the two condrification centers in the centrum of each vertebrae fuse?
How many secondary ossification centers appear after puberty?
The most sensitive period in the first trimester for cardiac development is between...
The primitive heart forms like a large blood vessel from the _____________ cells in the cardiogenic area of the embryo
What is the origin of the skeletal system?
Long bones and vertebrae develop from what type of ossification?
The right fourth arch forms the proximal part of the...