The pectoral girdle consists of which of the following bones. Anatomy Overview: Pelvic Girdle 2019-01-30

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the pectoral girdle consists of which of the following bones

There are some sex differences in the morphology of the clavicle. The remaining corner of the scapula, between the superior and lateral borders, is the location of the glenoid cavity glenoid fossa. At its lateral end, the clavicle articulates with the acromion of the scapula, which forms the bony tip of the shoulder. The second image is a photo of the right lateral view of a single thoracic vertebra. The second through the sixth images are each a different angle of the skull.

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The Pectoral Girdle

the pectoral girdle consists of which of the following bones

We move on now to the appendicular skeleton, starting with the pectoral girdle and upper limb. The thenar muscles include the abductor pollicis brevis, opponens pollicis, flexor pollicis brevis, and the adductor pollicis. Together, the clavicle, acromion, and spine of the scapula form a V-shaped bony line that provides for the attachment of neck and back muscles that act on the shoulder, as well as muscles that pass across the shoulder joint to act on the arm. The clavicle is the most commonly fractured bone in the body. The clavicle overlies many important blood vessels and nerves for the upper limb, but fortunately, due to the anterior displacement of a broken clavicle, these structures are rarely affected when the clavicle is fractured. In addition, the clavicle of each pectoral girdle is anchored to the axial skeleton by a single, highly mobile joint the sternoclavicular joint.

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The Pectoral Girdle · Anatomy and Physiology

the pectoral girdle consists of which of the following bones

In the fourth image, the right hip bone has coxal bone; the ilium located superior followed by the ischium. The right and left pectoral girdles are not joined to each other, allowing each to operate independently. A thin border that runs alongside the surface of the scapula forms the of the bone, which provides strength to the scapula to keep it from breaking or bending. The extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris are the muscles found in the superficial posterior compartment. Chapter Review The pectoral girdle, consisting of the clavicle and the scapula, attaches each upper limb to the axial skeleton. The three margins or borders of the scapula, named for their positions within the body, are the superior border of the scapula, the medial border of the scapula, and the lateral border of the scapula. The also plays a role in its movements.


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Pelvic girdle

the pectoral girdle consists of which of the following bones

The pelvic girdle is affected by limb-girdle , in which voluntary muscles around the pelvic and shoulder areas weaken progressively over time. Provides surface for muscle attachments. In some countries this may not be legally possible; if so: grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. The subscapular fossa is located on the anterior surface of the scapula. The deep anterior compartment produces flexion and bends fingers to make a fist. At this position, the lateral end of the clavicle is rotated posteriorly so that the angle at the acromioclavicular joint opens up slightly.

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8.1: The Pectoral Girdle

the pectoral girdle consists of which of the following bones

Provides surface for muscle attachments. The clavicle is the most commonly fractured bone in the body. The mandible is located in the posterior end of the skull. All of these fossae provide large surface areas for the attachment of muscles that cross the shoulder joint to act on the humerus. The posterior surface has a horizontal projection near the top called the spine of the scapula that ends at the top of the shoulder at the acromion. Both of these bones serve as important attachment sites for muscles that aid with movements of the shoulder and arm. Together, the clavicle, acromion, and spine of the scapula form a V-shaped line that serves as an important area for muscle attachment.

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The Pectoral Girdle

the pectoral girdle consists of which of the following bones

The carpal bones, along with the radius and ulna, are often injured during falls. If the fracture is complete, the shoulder and lateral clavicle fragment will drop due to the weight of the upper limb, causing the person to support the sagging limb with their other hand. The hypothenar muscles include the abductor digiti minimi, flexor digiti minimi brevis, and the opponens digiti minimi. These are the extensor radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and the extensor carpi ulnaris. The frontal bone, which makes up the top of the skull, is joined to the parietal bones on each side. The scapula has several important landmarks.

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Muscles of the Pectoral Girdle and Upper Limbs · Anatomy and Physiology

the pectoral girdle consists of which of the following bones

The occipital bone composes most of the back portion of the head. A number of muscles are attached to the scapula bones, and one edge has a thin, hollow space called the glenoid cavity. Muscles That Position the Pectoral Girdle Muscles that position the pectoral girdle are located either on the anterior thorax or on the posterior thorax and. The lateral end of the clavicle articulates joins with the scapula just above the shoulder joint. The palm is the origin of the intrinsic muscles of the hand.

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Pelvic girdle

the pectoral girdle consists of which of the following bones

Main Function For most animals, support is the primary goal of this particular set of bones and muscles. The scapula also has three corners, two of which are the superior and inferior angles. The posterior thoracic muscles are the trapezius, levator scapulae, rhomboid major, and rhomboid minor. The clavicle has three regions: the medial end, the lateral end, and the shaft. This triangular bone has three sides called the medial, lateral, and superior borders.


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Pectoral Girdle Anatomy: Bones, Muscles, Function, Diagram

the pectoral girdle consists of which of the following bones

The shaft has two important landmarks, the deltoid tuberosity and the spiral groove. The incidence of wrist fractures declines with advancing age and the incidence of other fractures, such as hip fractures, increases. The deep posterior compartment includes the abductor longus, extensor pollicis brevis, extensor pollicis longus, and the extensor indicis. Alternative Titles: bony pelvis, hip-girdle, pelvic bone Pelvic girdle, also called bony pelvis, in human , basin-shaped complex of that connects the trunk and the legs, supports and balances the trunk, and contains and supports the , the , and the internal sex organs. This in turn holds the shoulder joint superiorly and laterally from the body trunk, allowing for maximal freedom of motion for the upper limb. Each section does its own job, but in doing this, it helps out the whole warehouse. By following along the clavicle, you can palpate out to the bony tip of the shoulder, and from there, you can move back across your posterior shoulder to follow the ridge of the scapula.

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