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 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.
What are the functions of the pectoral girdle and the pelvic girdle?
The pectoral girdle stabilizes the upper limbs on the thorax and allows a range of mobility at the shoulder. Malformations impair these functions and distort the appearance of the upper chest and back. The pelvic girdle transfers upper body weight to the lower limbs by articulating with the spine.
Which bones form the pectoral girdle and what is its function?
The pectoral girdle consists of the clavicle and the scapula, which serve to attach the upper limb to the sternum of the axial skeleton. The scapula (shoulder blade) lies on the posterior aspect of the shoulder.
What does the pectoral girdle consist of quizlet?
The Pectoral (shoulder) Girdle is part of the appendicular skeleton and consists of the clavicle and scapula posteriorly. The Scapula (Shoulder Blade) are thin, triangular flat bones commonly called “wings” of humans.
What is the pectoral girdle composed of?
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.
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What muscle is pectoral girdle?
Muscles that position the pectoral girdle are located either on the anterior thorax or on the posterior thorax (Figure 7.26). The anterior muscles include the subclavius, pectoralis minor, and serratus anterior. The posterior muscles include the trapezius, rhomboid major, and rhomboid minor.
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.
What is the difference between pectoral girdle and pelvic girdle?
The pelvic girdle is formed of paired hip bones each made up of ilium, ischium and pubis. 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.
What is shoulder girdle and pelvic girdle?
The pectoral girdles are to the upper limbs as the pelvic girdle is to the lower limbs, the girdles are the parts of the appendicular skeleton that anchor the appendages to the axial skeleton.
What are the bones of the shoulder girdle?
The shoulder girdle consists of three bones (clavicle, scapula, and humerus) and three joints (sternoclavicular, acromioclavicular, and glenohumeral) as shown in Fig.
What are the joints of 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 bones of the pelvic girdle?
In discussing the pelvis, a distinction can be made between the “pelvic spine” and the “pelvic girdle.” The pelvic girdle, also known as the os coxae, Latin for “bone of the hip,” consists of the fused bones identified individually as the ilium, ischium, and pubis.
What are true 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 main function of the musculoskeletal system quizlet?
The musculoskeletal system provides support to the body, enabling it to stand erect and to move. The system protects inner organs, produces red blood cells, and provides for the storage of minerals.
What role do you think these ligaments have in stabilizing the pectoral girdle?
-These ligaments PREVENT SUPERIOR DISLOCATION OF ACROMION ON CLAVICLE-prevents the clavicle from losing contact with the acromion. -most critical role = PRODUCING LONGITUDINAL ROTATION of clavicle necessary for full range of motion of upper extremity. -These ligaments participate in scapulohumeral rhythm.
How do you draw a pectoral girdle?
How to Draw a Shoulder Girdle – YouTube
Why is it important that the pectoral girdle have only a single attachment to the axial skeleton?
Why is it important that the pectoral girdle have only a single attachment to the axial skeleton? Since the pectoral girdle does not articulate with the vertebral column and only attaches to the axial skeleton by the sternoclavicular joint, the pectoral girdle is not very stable.
What elevates pectoral girdle?
The posterior muscles of the pectoral girdle work to elevate the shoulders, retract (pull together) the scapula, move the arm, and assist in pulling the head back. … The major muscles in the pectoral girdle on the posterior side of the body are the rhomboid major &, minor and the trapezius.
What do the pectoralis muscles do?
pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. … Its major actions are adduction, or depression, of the arm (in opposition to the action of the deltoideus muscle) and rotation of the arm forward about the axis of the body.
What attaches to the pelvic girdle?
The pelvic girdle attaches the legs to the axial skeleton. The hip joint is where the pelvic girdle and the leg come together. The hip is joined to the pelvic girdle by many muscles. In the gluteal region, the psoas major and iliacus form the iliopsoas.
Why is the pectoral girdle incomplete?
Terms in this set (14) The pectoral girdle is an incomplete ring because it is open in the back between the… The medial ends of the clavicles areticulate with the what of the sternum? … This is a bone that serves as a brace between the sternum and the scapula.
Why is the pectoral girdle more free?
Why is the pectoral girdle more free than the pelvic girdle? … It is is not firmly and inflexibly anchored to the upper thorax as the pelvic girdle is to the sacrum. The pelvic girdle must support the weight of the entire upper body. To provide this support, there is a decrease in flexibility allowing for more stability.
Why is the pectoral girdle less sturdy than the pelvic girdle?
The pectoral girdle is weaker than the pelvic girdle because the pelvic girdle is the primary weight-bearing and locomotion structure for the body…
What are the points of articulation of pelvic and pectoral girdle?
Ans: In pelvic girdle, the point for articulation is the acetabulum. It articulates with the femur. In pectoral girdle, glenoid cavity is the point of articulation.
What is formed by the bones of pectoral girdle pelvic girdle and limbs?
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 is the difference between pectoral and pelvic?
Answer : Bones of the pelvic girdle or hip formed by 3 joined bones.
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Differnce between Pectoral and Pelvic Girdle Class 11 :
| Pectoral Girdle | pelvic Girdle |
|---|---|
| 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 |
What is the difference between shoulder joint and shoulder girdle?
The shoulder is not a single joint, but a complex arrangement of bones, ligaments, muscles, and tendons that is better called the shoulder girdle. The primary function of the shoulder girdle is to give strength and range of motion to the arm. The shoulder girdle includes three bones—the scapula, clavicle and humerus.
What muscles elevate the shoulder girdle?
The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles. Depression is accomplished through the force of gravity and the actions of the latissimus dorsi, serratus anterior, pectoralis major and minor, and the trapezius muscles.
What bones form the knuckles?
The Appendicular Skeleton
| A | B |
|---|---|
| Phalanges | finger bones, toe bones |
| Metacarpals | heads of these bones form the knuckles |
| Scapula and Sternum | bones that articulate with the clavical |
| Ilium, ischium, and pubis | fuse to form the coxial bone |
Which type of joints are found in the pectoral and pelvic girdle of frog from the following?
The pelvic girdle has a depression at the junction of the three bones. It is termed as acetabulum into which the head femur of the hind limb articulates and forms a ball and socket joint.
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COMPARATIVE ANATOMY: PELVIC GIRDLE OF FROG AND SHARK.
| Shark (Scoliodon) | Frog (Rana) |
|---|---|
| 9. Pubis is formed with cartilage tissue. | 9. Pubis is formed with calcified cartilage tissue. |
What organ is above pubic bone?
In the male cavity, the bladder is located behind the pubic bone and above the prostate.