Question

Number of tarsal bones of human in each hind limb is
a. 2
b. 7
c. 6
d. 5

Answer 1

Hint: Tarsus is the largest bone in humans which is calcaneus. It is a bone that bears the weight within the heel of the foot. The ankle joint is between the tibia and fibula above and below the tarsus in the body. There are three rows of tarsal bones in the foot named as proximal, intermediate, and distal.

Complete answer:
The seven bone cluster of articulating bones present between the lower end of the tibia and fibula and also metatarsus in each foot is called the tarsals. They are calcaneus, talus, cuboid, navicular, and 3 bones of cuneiform.

The three types of tarsals are:
> Proximal group – It is part of the hindfoot that forms the framework around the proximal ankle and heel. These are of two types: talus and calcaneus.
- Talus: One of the most superior tarsal bones is the talus that transmits the entire body weight to the foot. Superiorly, inferiorly, and Anteriorly is the three articulations of talus. The ankle joint between the talus and bones of the leg is called superiorly. The joint between the talus and calcaneus named as subtalar is called inferiorly. The jointly named talonavicular between the talus and the navicular is called anteriorly.
- Calcaneus: It is one of the largest bones of the tarsal that is present in the talus underneath and constitutes the heel.

> Intermediate group – It is a mid-foot part and consists of one bone which is named as navicular. The shape of the bone is like a boat.

> Distal group – It is also a part of mid-foot. There are four tarsal bones present in this, one id cuboid and three are cuneiforms. The metatarsals of the foot are articulated by these bones.

Hence, the correct answer is option (B).

Note: Thus, tarsal bones are of different forms and correspond to the upper limb carpal bones. These are the metatarsal bones combination present in humans. It maintains the body weight of humans on the foot properly. One of the most important or we can say that the key bone of the tarsal is the talus bone. When tarsal bone tissues are inflamed then it may hurt you badly.