The pectoral girdle consists of the clavicle and the scapula, which serve to attach the upper limb to the sternum of the axial skeleton.
What are the 2 functions of the pectoral girdle?
Your pectoral girdles are responsible for providing structural support to your shoulder region on the left and right side of your body. They also allow for a large range of motion, connecting muscles necessary for shoulder and arm movement. The pectoral girdles on either side of your body aren’t joined together.
What is the function of girdle bones?
Those bones are part of the appendicular skeleton – consisting bones of the limbs (upper and lower) and most of the bones forming the girdles (pectoral and pelvic). These bones connect the arms on each side, and the girdle actually functions as the anchor that attaches the appendages to the axial skeleton.
Which bone make up the pectoral girdle?
The shoulder, or pectoral, girdle is composed of the clavicles (collarbones) and the scapulae (shoulder blades). In humans the clavicles join the sternum (breastbone) medially and the scapulae laterally; the scapulae, however, are joined to the trunk only by muscles.What two bones make up the pectoral girdle quizlet?
The Pectoral (shoulder) Girdle is part of the appendicular skeleton and consists of the clavicle and scapula posteriorly.
What function is common to both the shoulder girdle and pelvic girdle?
The pelvic girdle and the shoulder girdle are not alike in their functions related to stabilization and motion of the extremities. In the shoulder girdle the scapula and clavicle work together as unit. The scapula’s primary support is muscles with only one attachment to the axial skeleton, at the manubrium.
Which bones make up the pectoral girdle and free upper limb?
The bones that attach each upper limb to the axial skeleton form the pectoral girdle (shoulder girdle). This consists of two bones, the scapula and clavicle ((Figure)).
How is the pectoral girdle formed?
The pectoral girdle is made up by the scapula and paired clavicles. The only direct attachment to the axial skeleton is the sternoclavicular ligament (Cruise and Brewer, 1994). The other major attachments are via the musculature. The humerus, radius, and ulna are typical of the mammalian family.What makes up the shoulder girdle?
The shoulder girdle is composed of the clavicle and the scapula, which articulates with the proximal humerus of the upper limb. Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint.
What are the three bones of the pectoral girdle?Anatomical terms of bone The shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side. In humans it consists of the clavicle and scapula; in those species with three bones in the shoulder, it consists of the clavicle, scapula, and coracoid.
Article first time published onWhat bones form the shoulder girdle quizlet?
The clavicle and scapula form this structure. Also called the shoulder girdle.
Is the pectoral girdle flexible?
The pectoral girdle is massive, while the pelvic one is lightweight. The pelvic girdle has deep secure sockets for limb attatchment, a pectoral one has a more shallow socket. The pectoral girdle is more flexible, while the other is more weight bearing.
What joint actions occur at the shoulder girdle?
The shoulder girdle is a gliding joint (with slight rotation) where the clavicle articulates with the scapula, usually moving as a unit. The movements of the shoulder girdle include depression and elevation, upward rotation and downward rotation, as well as abduction and adduction.
What are the function of the pectoral girdle quizlet?
This part of the skeleton wraps around the upper portion of the thoracic cage. It serves as the support structure for the upper limb. It includes the clavicles and scapulae.
What Three bones make up the shoulder girdle quizlet?
- Scapula.
- Humerus.
- Clavicle.
Which 2 bones make up the shoulder girdle which attaches the arm to the axial skeleton?
The bones that attach each upper limb to the axial skeleton form the pectoral girdle (shoulder girdle). This consists of two bones, the scapula and clavicle (Figure 2). The clavicle (collarbone) is an S-shaped bone located on the anterior side of the shoulder.
What is pectoral girdle and pelvic girdle?
The pectoral girdle stabilizes the upper limbs on the thorax and allows a range of mobility at the shoulder. … The pelvic girdle transfers upper body weight to the lower limbs by articulating with the spine.
What bones make up the upper limb?
In this section, learn more about the anatomy of the bones of the upper limb – the clavicle, scapula, humerus, radius, ulna and hand bones.
What bones make up the shoulder joint?
The shoulder joint is formed where the humerus (upper arm bone) fits into the scapula (shoulder blade), like a ball and socket. Other important bones in the shoulder include: The acromion is a bony projection off the scapula. The clavicle (collarbone) meets the acromion in the acromioclavicular joint.
What are the names of the bones of the shoulder girdle their locations and their functions?
- Scapula (shoulder blade)
- Humerus (upper arm). The humerus is the upper arm bone. It is divided into the head, anatomic neck, surgical neck, and shaft. The head of the humerus forms the ball portion of the ball-and-socket like glenohumeral joint. …
- Clavicle (collar bone)
Which of the following bones is not part of pectoral girdle which of the following bones is not part of pectoral girdle?
The pubis is not part of the pectoral girdle. This would make answer choice “A” correct. The pubis is actually a structure of the pelvis. The pectoral girdle consists of bones such as the clavicle and scapula.
Is pectoral girdle appendicular or axial?
The axial skeleton forms the central axis of the body and consists of the skull, vertebral column, and thoracic cage. The appendicular skeleton consists of the pectoral and pelvic girdles, the limb bones, and the bones of the hands and feet.
What does the pectoral girdle articulate with?
The pectoral attach the bones of the upper limbs to the axial skeleton. Each of the two pectoral girdles consists of a clavicle and a scapula. The clavicle, the ANTERIOR bone, articulates with the manubrium of the sternum; the scapula, the POSTERIOR bone, articulates with the clavicle and with the humerus.
Which joint is found in the pectoral and pelvic girdle of a frog?
Shark (Scoliodon)Frog (Rana)9. Pubis is formed with cartilage tissue.9. Pubis is formed with calcified cartilage tissue.
What is the name of the joint between the two bones of the shoulder girdle quizlet?
The clavicle provides the only fixed support to the pectoral girdle. The clavicle, together with the scapula, form the pectoral girdle, which is also known as the shoulder girdle. The joint formed by these two bones is known as the acromioclavicular joint and forms this V-shaped structure.
What are the bones that make up the shoulder joint quizlet?
The bones that comprise the shoulder complex and shoulder joint are the clavicle, scapula, and humerus. These three bones form the four major articulations associated with the shoulder complex: the sternoclavicular joint, the acromioclavicular joint, the glenohumeral joint, and the scapulothoracic joint.
What is the difference between the shoulder girdle and the pelvic girdle?
The shoulder girdle or the pectoral girdle is a set of 4 bones which connects to the arm on each side. 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 pelvic girdle is located in the lower part of the trunk.
Which of the following is part of pectoral girdle?
Each part of the pectoral girdle consists of a scapula and clavicle. The glenoid cavity is a shallow, pyriform articular surface, which is situated on the lateral angle of the scapula. It articulates with the humerus to shape the shoulder joint. Thus the glenoid cavity is a part of the pectoral girdle.
Which bones are found at the elbow joint?
The elbow is a complex joint formed by the articulation of three bones –the humerus, radius and ulna.
Why is it called pectoralis major?
Anatomical terms of muscle The pectoralis major (from Latin pectus ‘breast’) is a thick, fan-shaped or triangular convergent muscle, situated at the chest of the human body. It makes up the bulk of the chest muscles and lies under the breast.
Which feature of the ulna forms the point of the elbow?
The upper end of the ulna presents a large C-shaped notch—the semilunar, or trochlear, notch—which articulates with the trochlea of the humerus (upper arm bone) to form the elbow joint.
