35 terms

Spinal Anatomy 2

a condition of a vertebra that has lost its proper juxtaposition with the one above or the one below, or both
Loss of proper vertebral joint function that may affect proper nerve function and good health
Deals with Nerves (VSC)
Deals with Motion (VSC)
Deals with Muscle (VSC)
Deals with Cellular changes (VSC)
Deals with Chemical changes (VSC)
Distal 1/3 of the Fallopian Tubes
Fertilization takes place here
Enters the Uterus
After 7 or 8 days the embryo does this
Proteolytic Enzyme
The egg releases this to allow it to digest the endometrial lining of the uterus and sink below the surface closer to the rich vascular supply
Pregnancy that occurs outside the Uterus
Spine and Heart
First two structures to start developing
Germ Disc
Flattened out round egg
Surrounds the amniotic cavity and comes together under or anterior to the neuroectoderm tissue
From Hensen's node, cells migrate or elongate to the caudad (inferior) and form a structure
Chorada Dorsalis
Another name for the notochord
2nd Embryonic Week
When does the Spine begin to form
A group of mesodermal cells that begin to line up on either side of the notochord
42 to 44 pair
Number of somites
Vertebral Bodies
Somites become
1st 4 pair of Somites become
Cervical Vertebrae
7 pair of Somites become
Thoracic Vertebrae
12 pair of Somites become
Lumbar Vertebrae
5 pair of Somites become
Sacral Segments
2nd pair of 5 Somites become
Coccygeal segments
8 or 9 pair of Somites become
Dissapear or Absorbed
Happens to the left over Somites
Neural Crest Cells
Develops into the posterior (dorsal) root ganglion and spinal nerves
3rd Embryonic Week
The somites will split in their center
Fissure of Von Ebner
The area where the Somites split
Formed by the union of 2 different somites
4th Embryonic Week
The sclerotomes begin to change into cartilage.
Nucleus Pulposis
The squeezed notochord will bunch up between the cartilage and will become part this part of the Intervertebral disc
Stages of Vertebral Development
Mesenchymal Stage, Chondrificational (Cartilage forming) Stage, Ossification Stage
Mesenchymal Stage
Primordial Stage, Primordium are nicknames for this stage