pectoral girdle

Examples of pectoral girdle in the following topics:

• The Appendicular Skeleton

  • The appendicular skeleton includes the skeletal elements within the limbs, as well as supporting pectoral and pelvic girdles.
  • The appendicular skeleton includes the skeletal elements within the limbs, as well as supporting the pectoral and pelvic girdles.
  • The pectoral girdles consist of 4 bones: The left and right clavicle (2) and the scapula (2).
  • The bones of the pectoral girdle consist of two bones (scapula and clavicle) and anchor the upper limb to the thoracic cage of the axial skeleton.
  • The pelvic girdle is formed by a single bone, the hip or coxal bone, and serves as the attachment point for each lower limb.

• Human Appendicular Skeleton

  • It also includes the pectoral (or shoulder) girdle and the pelvic girdle, which attach the upper and lower limbs to the body, respectively .
  • The pectoral girdle bones, providing the points of attachment of the upper limbs to the axial skeleton, consists of the clavicle (or collarbone) in the anterior, as well as the scapula (or shoulder blades) in the posterior .
  • The scapulae are flat, triangular bones that are located at the back of the pectoral girdle.
  • The appendicular skeleton is composed of the bones of the pectoral limbs (arm, forearm, hand), the pelvic limbs (thigh, leg, foot), the pectoral girdle, and the pelvic girdle.
  • (a) The pectoral girdle in primates consists of the clavicles and scapulae.

• Overview of the Appendicular Skeleton

  • The unfused appendicular skeleton is composed of the appendages (legs and arms) and their supporting girdles, totaling 126 bones.
  • The word "appendicular" comes from "appendage," which means "a part that is joined to something larger. " The appendicular skeleton comprises the limbs and their supporting girdles (pectoral and pelvic).
  • Pectoral Girdle (four bones).
  • The pectoral girdle consists of the left and right clavicle (two bones) and the left and right scapula (two bones).
  • Pelvic Girdle (two bones) - The pelvic girdle consists of the left and right os coxa, or the hip bone (two bones).

• Divisions of the Skeletal System: Axial and Appendicular

  • Functionally, it is involved in locomotion (lower limbs and pelvic girdle) of the axial skeleton and manipulation of objects in the environment (upper limbs and pectoral girdle) .

• Overview of the Axial Skeleton

  • The human rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and supports the pectoral girdle, forming a core portion of the human skeleton.

• Types of Skeletal Systems

  • The skeletal system in vertebrates is divided into the axial skeleton (which consists of the skull, vertebral column, and rib cage), and the appendicular skeleton (which consists of the shoulders, limb bones, the pectoral girdle, and the pelvic girdle).

• Anterior Muscles

  • Pectoral muscles lie in the chest and exert force through the shoulder to move the upper arm.
  • Lying below the pectoral muscles, the intercostal muscles form the chest wall and play a key role in respiration.
  • Highlighted in orange, the external obliques lie inferior to the pectoral muscles

• Muscles of the Shoulder

  • Muscles that act on the shoulder can be classified as extrinsic, intrinsic, pectoral, or upper arm.
  • Pectoral muscles lie in the chest and exert force through the shoulder to move the upper arm.
  • Three pectoral muscles interact with the shoulder.

• Muscular Dystrophy

  • Other forms include Becker, limb-girdle, congenital, facioscapulohumeral, myotonic, oculopharyngeal, distal, and Emery-Dreifuss MD.

• Scapula

  • The subscapular fossia for subscapularis, serratus, pector minor regions are highlighted.