Question

The head of the rib which articulates with the transverse process of thoracic vertebrae is called?
A) Capitulum
B) Tuberculum
C) Centrum
D) Shaft

Answer 1

Hint: Thoracic vertebrae are unique among the bones of the spine that support ribs and have overlapping spinous processes. Region of the spinal column inferior to the cervical vertebrae of the neck and superior to the lumbar vertebrae of the lower back is formed by thoracic vertebrae.

Complete answer:
The spine or backbone consists of vertebrae which is also known as the vertebral column. It is a part of the axial skeleton which is composed of the skull, ribs and sternum other than the vertebral column. The vertebral column replaces the notochord that is present during the embryonic stage. Spinal cord is protected by the spine.
The main functions of spine are
Protection of spinal cord.
Provides support to the head.
It provides the point attachment to ribs and muscles at the back.
It provides structural support.
Helps in locomotion and movement.
The head of the rib is the tuberculum or tubercle. The end of each rib is bigamous with one larger and other smaller branches. The smaller branch termed tuberculin articulates with the transverse process of the thoracic vertebrae.
Capitulum is a type of inflorescence which is the arrangement of flowers on a floral axis.
Centrum is the central part of the vertebrae that gives strength to the vertebral column.
Shaft is the midsection of bone.

So, the correct answer can be defined as Option B.

Notes:
1. First bone of the spine is Atlas and the second bone of spine is known as Axis and the joint between them is called pivot joint.
2. Cartilaginous joints are present between adjacent bones of spines.
Five sections of spine are:
1. Cervical
2. Thoracic
3. Lumbar
4. Sacral
5. Coccygeal