Canine Appendicular Skeleton: Anatomy and Osteology Quiz

The scapula is a bone located in the upper back that is commonly referred to as the shoulder blade. It plays a key role in movements of the shoulder joint and provides attachment points for various muscles.

The spine of the scapula is a prominent ridge located on the lateral surface of the scapula that divides it into two nearly equal fossae.

The Acromion is a bony projection on the scapula, specifically at the distal end of the spine where the deltoideus muscle originates. It is not located above the patella in the knee, on the radius bone in the forearm, or part of the sternum in the chest.

The supraspinous fossa is a specific anatomical feature found on the scapula, not on the femur, humerus, or tibia.

The infraspinous fossa is a specific anatomical feature located on the scapula bone of the shoulder girdle. It is not found on the femur, skull, or humerus.

The Carpus Joint also known as the wrist is comprised of different components as mentioned in the correct answer. The incorrect answers provided refer to different joints found in the human body.

The head of the humerus articulates with the glenoid cavity of the scapula, forming the shoulder joint.

The major components of the radius include the head, fovea capitis, articular circumference, radial tuberosity, body, ulnar notch, and styloid process. Olecranon process, carpals, and sacrum are not major components of the radius.

The ulna is one of the two main bones of the forearm, alongside the radius. The major parts of the ulna include trochlear notch, radial notch, olecranon, anconeal process, coronoid processes - medial and lateral, body, ulnar tuberosity, interosseous border, and styloid process. The incorrect answers provided do not represent parts of the ulna.

The carpus is made up of several bones, including the radial (intermedioradial) carpal bone, ulnar carpal bone, accessory carpal bone, and first carpal bone. The incorrect answers provided do not correspond to any actual parts of the carpus.

The appendicular skeleton consists of the bones of the thoracic girdle, forelimbs, pelvic girdle, and hind limbs, supporting the movement and function of the limbs.

The vestigial bone, also known as the clavicle, is a small bone found in some animal species. In cats, it is a small sliver of bone, while in dogs, it is a small oval plate located cranial to the shoulder within the clavicular tendon in the braciocephalicus muscle.

The serrated fact is located on the medial (costal) surface of scapula, serving as the insertion point for the serratus ventralis muscle.

The subscapular fossa is found on the medial (costal) surface of the scapula, serving as the attachment site for the subscapularis muscle. This region plays a crucial role in shoulder movement and stability.

The scapula has specific angles that are defined by its borders. The correct angles are the Cranial angle and the Caudal angle, based on their positions relative to the scapula's borders.

The infraglenoid tubercle is a bony projection on the scapula, specifically on its ventral surface, just proximal to the ventral angle. This structure gives attachment to the teres minor and the long head of the triceps muscles.

The supraglenoid tubercle is specifically located at the cranial part of the glenoid cavity and serves as an attachment site for certain muscles. It is not an articular surface within a joint, a bony prominence on the humerus, or an attachment site for the deltoid muscle.

The shoulder joint is specifically formed by the articulation of the scapula (shoulder blade) and the humerus (upper arm bone).

The shoulder joint is commonly referred to as the scapulohumeral joint, but it is also known as the glenohumeral joint, acromioclavicular joint, and sternoclavicular joint

The radial tuberosity is a specific landmark on the radius bone and its location is important for understanding muscle attachments and movements associated with it.

The Suprahamate process refers to a specific anatomical feature that is not present in all animals, making it distinct and characteristic to certain species like the cat.

The clavicle is one of the first bones to show ossification in the fetal dog due to its important role in supporting the shoulder and upper limb girdle during growth and development.

The scapula has three borders: the cranial border which is the upper edge, the caudal border which is the lower edge, and the dorsal border which is the side closest to the back of the body.

The scapular notch is indeed located near the ventral angle (glenoid cavity) and the border is concaved as it nears the formation of the neck.

The correct answer describes the composition of the elbow joint and its components, which involve the ulna, radius, and humerus. The incorrect answers provide inaccurate information about different bones and joints that are not part of the elbow joint structure.

The metacarpal bones are located in the hand, between the wrist and the fingers, and there are indeed 5 metacarpal bones in each forelimb. They are commonly known as metacarpal I, II, III, IV, and V.

The correct answer is the left lateral scapula because it matches the orientation of the scapula shown in the picture. The right lateral scapula is incorrect as it would be on the opposite side of the image. The left medial scapula is incorrect as the picture does not show the medial side of the scapula. The right medial scapula is also incorrect for the same reason.

The lateral epicondyle is indeed smaller than the medial one and is located on the enlarged distolateral end of the humerus proximal to the capitulum, which is a key anatomical landmark to differentiate these two structures.