Test: Movement and Locomotion - Skeleton System (September 13) - NEET MCQ

Axis (second cervical vertebra) has a peg like process called odontoid process that fits into odontoid canal of atlas (first cervical vertebra).

Clavicle (collar bone) is the bone of pectoral girdle, It articulates with the acromion process of the scapula.

Each hind limb consists of 30 bones 1 femur, 1 patella, 1 tibia, 1 fibula, 7 tarsals, 5 metatarsals and 14 phalanges.

Cranium consists of 8 bones-1 frontal, 2 parietal, 2 temporal, 1 occipital, 1 sphenoid and 1 ethmoid.

Clavicle is a bone that forms part of the pectoral girdle (part of appendicular skeleton) linking the scapula to the sternum (part of axial skeleton).

Patella is a cup-shaped bone covering and protecting the anterior surface of the knee joint. Scapula is a large triangular flat bone, situated on the dorsal side of the thorax.

The endoskeleton of mammals have two major divisions: (i) Axial skeleton, that lies along the longitudinal axis of the body. It supports and protects the organs of the head, neck and trunk. It includes skull, ribs, sternum and vertebral column, (ii) Appendicular skeleton, which is associated with the appendages. It consists of two girdles, the pectoral and pelvic girdles and the limb bones.

Tarsals and metacarpals are the bones of the limb, therefore, they are the part of appendicular skeleton and not the axial skeleton which consists of vertebral column.

Actin is a globular protein present in thin filaments. There are 12 pairs of ribs in man. Sternun is a flat bone present on the ventral side of the body in the middle of the front of the chest.

The first 7 pairs of ribs are called true ribs as their anterior ends are attached directly to the sternum. The 8^th, 9^th and 10^th pairs are called false ribs as they are attached indirectly to the sternum. The 11^th and 12^th pairs are called floating ribs as their anterior ends are not attached to sternum.