1.What is the importance of skull?
- Bony structure and support for face.
- It acts as a cavity for the brain.
- It forms the important protective shield for the brain.
- The mandible or the lower jaw forms the largest and strongest
part of the skull which helps in holding the lower teeth in place
and moves while chewing the food.
2.what lightens the skull and warm and moisten the air as it
passes into the respiratory system?
- The hollow sinuses lightens the skull and helps in the
production of mucus for the respiratory tract thus moistening the
air that passes into the respiratory tract.
3.How many divisions are there for the vertebrae?
- There are five different divisions of the vertebrae which
include the cervical, thoracic, lumbar, sacral and coccygeal.
- The vertebral column usually consists of 33 vertebrae of which
there are 7 cervical, 12 thoracic, 5 lumbar , 5 sacral and 4
coccygeal vertebrae.
4.what are the divisions of the vertebrae?
- Cervical:It consists of seven vertebrae and holds the most
thinnest, delicate bones . It supports the head and protects the
spinal cord.
- Thoracic: There are 12 thoracic vertebrae which supports the
ribs and has overlapping spinus processes.
- Lumbar: There are 5 lumbar vertebrae which forms the lower back
.
- Sacral:There are 5 sacral bones which connects the spine to the
hip bone .
- Coccygeal: There are 4 coccygeal bones which are known as
caudal bones. The bones are fused together to form the coccyx.
5. What is the another name of coccyx?
- The coccyx is otherwise called as the tailbone which is the
final segment of the vertebral column.