Individual Features

FEATURE INDIVIDUALS

Atlas (1st Cervical Vertebra)

The main differentiation of this from the other vertebrae is that it has no body.

In addition, this vertebra has other structures:

 Anterior Arc & #8211; it forms about 1/5 of the ring.

 Anterior Tuber

Fovea Dental & #8211; articulates with Axis Tooth (odontoid process)

 Posterior Arch & #8211; shape about 2/5 of the ring.

 Posterior Tuber

 Side Masses & #8211; bulkier and more solid parts of the atlas and support the weight of the head.

 Upper Articular Face & #8211; articulates with the occipital condyles.

 Lower Articular Face & #8211; articulates with the upper joint processes of the 2nd cervical vertebra (Axis).

 Transverse Processes & #8211; the transverse foramina are found.

ATLAS & #8211; UPPER VIEW
 Atlas - Top View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.
ATLAS & #8211; BOTTOM VIEW
 Sacro - Bottom View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

Axis (2nd Cervical Vertebra)

It has a strong bone process called Tooth (Odontoid Process) which is located superiorly and articulates with the anterior arch of the Atlas.

AXIS & #8211; PREVIOUS VIEW
 Axis - Previous View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.
AXIS & #8211; BACK VIEW
 Axis - Rear View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

7th Cervical Vertebra (Prominent Vertebra)

* Long and prominent spinous process.

 CERVICAL SEVENTH CERVICAL (C7) & #8211; UPPER VIEW
 C7 - Top View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

12th Thoracic Vertebra

* Single thoracic vertebra with lateralized lower joint processes.

 TWELVE THORACIC (T12) & #8211; SIDE VIEW
 T12 - Side View
Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

 

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