Biology, asked by shushant6789, 1 year ago

write the difference between pectoroal and pelvic girdle

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Answered by Gunjan842002
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Pectoral girdles

Pelvic girdles

Ossification both intramembranous and intracartilaginous

Ossification: only intracartilaginous

 It is situated in the shoulder region.

It is situated in the hip region.

The glenoid cavity of the scapula forms ball and socket joint with the humerus.

A cup-shaped cavity called acetabulum forms ball and socket joint with the femur.

The glenoid cavity present in the pectoral girdle is comparatively shallow.

Acetabulum cavity present in the pelvic girdle is comparatively deep.

It gives articulation to forelimb  bones.

It gives articulation to hindlimb bones.

The back muscles are attached to the pectoral girdle.

The hip muscles are attached to the pelvic girdle.

Two principal components clavicle and scapula remain separate

Three components ilium, ischium and pubis which fuse into a single hip bone

No articulation with verterbral column

Articulation with vertebral column (sacrum )

No direct ventral articulation

Direct ventral articulation at symphysis pubis

Comparatively lightly built for mobility

Massively constructed for resistance to stress

Shallow joint with limb allowing wide range of movements

Deep joint with limb, limiting range of movements

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