Anatomy: Nasal Cavity and Skeletal System Quiz

The paranasal sinuses are ______ in the nasal cavity.

The paranasal sinuses serve to protect ______ structures in the event of facial trauma.

The ______ bone is the only bone that does not articulate with another bone.

The vertebral column is also known as the ______.

The top ______ vertebrae of the spinal column are moveable.

The ______ and coccyx vertebrae of the spinal column are fused.

The ______ are cavities within the bones of the skull.

The ______ are lines of junction between the bones of the skull.

The ______ is a U-shaped bone located at the base of the tongue.

In the fetal ______, the bones are not fused, allowing it to pass through the birth canal.

The ______ bones of the skull are reduced in number in mammals compared to early fishes.

The vertebral column serves as the main ______ axis in vertebrates.

The ______ is the only movable bone of the skull.

The frontal, maxillary, ethmoid, and sphenoid bones contain the ______ sinuses.

The ______ suture separates the frontal and parietal bones.

The ______ bone forms the upper jaw and part of the orbit.

The ______ suture separates the parietal bones.

In the ______ skull, the bones are not yet fused together.

Paranasal Sinuses and Skull Anatomy

Paranasal sinuses are located in the nasal cavity.
They protect vital structures during facial trauma.
The hyoid bone is unique as it does not articulate with any other bone.

Vertebral Column

Also known as the spine.
The upper cervical vertebrae are moveable, allowing for head rotation and flexibility.
Sacral and coccygeal vertebrae are fused, contributing to pelvic stability.

Skull Features

Cavities within the skull bones are called sinuses.
Sutures are lines of junction where skull bones meet.
The hyoid bone, located at the base of the tongue, aids in swallowing.

Fetal Development

In fetal development, bones of the skull are unfused to facilitate passage through the birth canal.
Mammals possess fewer skull bones compared to early fish due to evolutionary adaptations.

Functions and Movability

The vertebral column serves as the main support axis for vertebrate bodies.
The mandible is the only movable bone in the skull.
Frontal, maxillary, ethmoid, and sphenoid bones are associated with the paranasal sinuses.

Skull Sutures

The coronal suture separates the frontal bone from the parietal bones.
The maxilla forms the upper jaw and part of the eye socket.
The sagittal suture separates the left and right parietal bones.

Non-Fused Skull in Fetus

In fetal skulls, bones remain unfused, allowing for greater flexibility during birth.

Test your knowledge on the anatomy of the nasal cavity and the skeletal system. Learn about the functions of sinuses and the unique features of the hyoid bone and vertebral column.