Difference between Pectoral and Pelvic Girdle Class 11 Pdf
Differentiate between Pectoral and Pelvic Girdle Class 11 :
Pectoral and Pelvic Girdle are two different types of bones and both are completely different from each other. In this article we explain all their difference between Pectoral and Pelvic Girdle that you can distinguish them perfectly in your preparation.
Read : Difference between Prokaryotic and Eukaryotic Cell
Differnce between Pectoral and Pelvic Girdle Class 11 :
| Pectoral Girdle | pelvic Girdle |
|---|---|
| The Pectoral girdle is a set of 4 bones which connects to the arm on each side. It is a set of 4 bones -1. 2 scapula2. 2 clavicle | The pelvic girdle consists of two bones: sacrum and the coccyx. The pelvic girdle is formed of paired hip bones each made up of ilium, ischium and pubis. |
| The bones of the pectoral girdle are lighter | It consists of innominate coxal or hip bones |
| It has no articulation with the vertebral column | It has an articulation with the vertebral column. |
| It is also known as shoulder girdle and is found in shoulder on both the sides | It is found in the lower part of the trunk |
| The pectoral girdle is part of the appendicular skeleton which are for the upper limbs. In human beings, the pectoral girdle consists of the scapula and the clavicle. | The pelvic girdle is located in the lower part of the trunk. It is a ring-like bony structure. |
| These are responsible for lifting, holding etc. | These are responsible for jumping, standing etc. |
| It is same in both males and females | Women majorly have gynaecoid pelvis and males have android pelvis |
| It is a skeletal support from where the forelimbs of vertebrates are attached. | It is a skeletal support form where the hind limbs of vertebrates are attached. |
| It has more mobility than the pectoral girdle. | It has less mobility than the pectoral girdle. |
What is Pectoral Girdle?
The shoulder girdle is a set of bones, joints and muscles that provide mobility to the upper body. More specifically, the shoulder girdle is made up of two bones mainly, the clavicle and the scapula. Although the importance of the sternum in it should not be overlooked. It is very necessary to strengthen the muscles that are in this area. They are essential for strengthening the back. Its strengthening will help us with the prevention of problems and pain in it. The bones that therefore make up the shoulder girdle are: The humerus, The scapul, Clavicle. Some of the most common injuries to the shoulder girdle are: Clavicle dislocations, Shoulder dislocation, Elbow dislocation Scapula, clavicle and humerus fractures, Sternoclavicular injury
It is made up of 3 true joints:
1. Glenohumeral or scapulohumeral: joint between the head of the humerus and the glenoid belonging to the scapular bone also called the shoulder blade
2. Clavicular acromion: formed by the outer edge of the clavicle and the acromion that belongs to the spine of the scapula.
3. Sternocostoclavicular: brings the internal end of the clavicle into contact with the sternal manubrium and the first costal cartilage
4. Scapulothoracic: the surfaces are on the one hand the scapula and on the other the thorax, it is not a proper joint since it lacks the necessary characteristics to be one but it is extremely important to give the biomechanical characteristics to the whole set.
The function of the shoulder girdle is
- Allow arm mobility in all planes of motion
- Orient the hand in all the axes of space.
- Give stability to the whole body.
- Join the upper extremity to the thorax.
- The shoulder girdle is made up of the bones of the clavicle and scapula .
- The waist extends from the base of the neck to the lower edge of the pectoralis major muscle .
- It is divided into three different regions: anterior or axillary , middle or deltoid, and posterior or scapular .
- It contains the greatest amount of movement of all the joints of the body.
- It is the proximal segment of the upper limb.