Question

The type of joint between sternum and the ribs in humans is__________________.
A. Cartilaginous joint
B. Fibrous joint
C. Synovial joint
D. None of the above

Answer 1

Hint: The joint is also present between the adjacent vertebrae in the vertebral column and it permits limited movements.

Complete answer: The cartilaginous joints are defined as the bones involved are joined together with the help of cartilages. The sternum and first rib are joined together with the help of cartilage. Therefore the joint present here is called a cartilaginous joint.

So, the correct answer is “Option A”.

Additional Information: Joints are important for all types of movements of the body including the bony parts. Joints are points where two bones or bones and cartilages come in contact. The joint acts as a fulcrum that is when forces are generated by the muscles are used to carry out movement through joints.
Joints have been classified into the fibrous joint, cartilaginous joint, and synovial joint.
1. Fibrous joint: It is seen in the flat skull bones which fuse end-to-end with the help of dense fibrous connective tissues and it is called sutures. This type of joint does not allow any movement in the joints.
2. Synovial joint: in this type of joint there is a presence of a fluid-filled synovial cavity between the articulating surfaces of the two bones. Therefore this type of joint allows considerable movement.
Synovial joints help with locomotion and many other movements.

Note: The type of synovial joint are:
 1. Ball and socket joint- It is present between the humerus and pectoral girdle.
 2. Hinge joint- It is present between knee joints.
 3. Pivot joint - It is present between the atlas and axis.
 4. Gliding joint - It is present between the carpals.
 5. Saddle joint - It is present between carpal and metacarpal of thumb).