Six
21
The median sacral crest on the sacrum is a bony ridge formed by fusion of sacral vertebrae, indicating where the individual vertebrae once were. In contrast, the median sacral crest on lumbar vertebrae does not exist, as lumbar vertebrae do not fuse in the same way as sacral vertebrae.
Overall, sacral vertebrae problems are not common in horses. However, it is possible for the sacral vertebrae to become fractured, dislocated or infected, all of which can compress the pelvic limb spinal nerves that run through the sacral vertebrae.
7 cervical vertebrae + 12 thoracic vertebrae + 5 lumbar verterbae + 5 sacral vertebrae + 4 caudal vertebrae = 33
The lumbar vertebrae come next, followed by the sacral.
A typical dog has around 30 vertebrae in its spine, consisting of cervical (neck), thoracic (chest), lumbar (lower back), sacral (pelvic), and tail vertebrae. The number can vary slightly depending on the breed and size of the dog.
the sacral vertebrae, and think it's 4 to 5 that are fused together
sacrum and coccyx
A sacral vertebra is one of the bones in the spine located in the lower back, just below the lumbar vertebrae. There are typically five sacral vertebrae that are fused together to form the sacrum, which connects the spine to the hip bones. The sacral vertebrae play a role in supporting the weight of the body and protecting the spinal cord.
A human has 33 total vertebraeCervical vertebrae: 7Thoracic vertebrae: 12Lumbar vertebrae: 5Sacrum (fusion of 5 sacral-vertebrae): 1Coccyx (fusion of 4 coccygeal): 1
There are typically 33 vertebrae in the human spine: 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 5 sacral vertebrae (fused into the sacrum), and 4 coccygeal vertebrae (fused into the coccyx).
7 Cervical, 13 Thoratic, 4 Lumbar, 3 Sacral and 30 Caudal for a total of 57 vertebrae.