Question

Number of wrist bone is
A. 8
B. 9
C. 7
D. 6

Answer 1

Hint: The wrist that is firmly bound in two rows of four bones and has eight small carpal bones present in it. And the name of the total eight wrist bones present in the carpels are hamate, capitate, lunate, pisiform, triquetrum, scaphoids, trapezoid and trapezium. Carpals bones are made of the combination of small eight bones of carpus.

Complete answer:
The hand in the part of human anatomy plays a very important role in the wrist is to facilitate effective positioning of the hand skeleton and in the mobility of the individual carpal bones with the use of the flexors and extensors of the forearm that increase the freedom of movements at the wrist activities.
The wrist between the radius of metacarpus and ulna that is tetrapod’s corpus sole cluster of the bones. The bones present in the carpus do not belong to the toes in quadrupeds but associated with the tarsus and foot. The present carpal bones help to allow the wrist move in the vertical direction. The third finger runs over the capitudinal bone and makes a straight line with the forearm otherwise without it the hand is said to be in a straight position. Abduction and adduction is possible from the straight position two pairs of hand movements are possible.

Therefore the correct option is (A).

Note: The carpal bones are divided into the two groups in the lower side of the hand hamate, capitate, trapezium and trapezoid present in it and on the upper side scaphoids, lunate, triquetrum. Sometimes the carpal bossing condition is obtained due to the effect of arising short carpometacarpal bones in between the middle finger of the hand.