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Pectoral girdle

 

 
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Pectoral girdle
 
 
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The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. It consists of the clavicle
Clavicle

In human anatomy, the clavicle or collar bone is classified as a flat bone that makes up part of the shoulder girdle . It receives its name from the Latin clavicula because the bone rotates along its axis like a key when the shoulder is Abduction ....
 and scapula
Scapula

In anatomy, the scapula, omo, or shoulder blade, is the bone that connects the humerus with the clavicle .The scapula forms the posterior part of the shoulder girdle....
 in humans and, in those species with three bones in the pectoral girdle, the coracoid
Coracoid

The coracoid Process is a small hook-like structure on the lateral edge of the superior anterior portion of the scapula. Pointing laterally forward, it, together with the acromion, serves to stabilize the Glenohumeral joint....
. Some mammal
Mammal

Mammals are a class of vertebrate animals whose name is derived from their distinctive feature, mammary glands, with which they feed their young....
ian species (e.g. dog
Dog

The dog is a domesticated subspecies of the Gray Wolf, a member of the Canidae family of the order Carnivora. The term is used for both feral and pet varieties....
 and horse
Horse

The horse is a hoofed mammal, a subspecies of one of seven extant species of the family Equidae. The horse has evolution of the horse over the past 45 to 55 million years from a small multi-toed creature into the large, odd-toed ungulate animal of today....
) have evolved to have only the scapula.

In humans, the only joints between shoulder girdle and axial skeleton are the sternoclavicular joints on each side.






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The pectoral girdle is the set of bones which connect the upper limb to the axial skeleton on each side. It consists of the clavicle
Clavicle

In human anatomy, the clavicle or collar bone is classified as a flat bone that makes up part of the shoulder girdle . It receives its name from the Latin clavicula because the bone rotates along its axis like a key when the shoulder is Abduction ....
 and scapula
Scapula

In anatomy, the scapula, omo, or shoulder blade, is the bone that connects the humerus with the clavicle .The scapula forms the posterior part of the shoulder girdle....
 in humans and, in those species with three bones in the pectoral girdle, the coracoid
Coracoid

The coracoid Process is a small hook-like structure on the lateral edge of the superior anterior portion of the scapula. Pointing laterally forward, it, together with the acromion, serves to stabilize the Glenohumeral joint....
. Some mammal
Mammal

Mammals are a class of vertebrate animals whose name is derived from their distinctive feature, mammary glands, with which they feed their young....
ian species (e.g. dog
Dog

The dog is a domesticated subspecies of the Gray Wolf, a member of the Canidae family of the order Carnivora. The term is used for both feral and pet varieties....
 and horse
Horse

The horse is a hoofed mammal, a subspecies of one of seven extant species of the family Equidae. The horse has evolution of the horse over the past 45 to 55 million years from a small multi-toed creature into the large, odd-toed ungulate animal of today....
) have evolved to have only the scapula.

In humans, the only joints between shoulder girdle and axial skeleton are the sternoclavicular joints on each side. No joint exists between each scapula and the thoracic cage, instead the muscular connection between the two permits relatively great mobility of the shoulder girdle in relation to the pelvic girdle.

In those species having only the scapula, no joint exists between the forelimb and the thorax, the only attachment being muscular
MUSCLE

MUSCLE is public domain, multiple sequence alignment software for protein and nucleotide sequences.MUSCLE is integrated into UGENE bioinformatics tool as a plugin....
.

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