Upper Limbs Bone Anatomy Quiz

The fibrous sheet between the ulna and radius is known as the interosseous membrane, serving as a fibrous joint to allow for slight movement between the two bones.

The correct joints of the elbow synovial joint are trochlear notch of ulna and trochlea of humerus, head of radius and capitulum of humerus, and head of radius and radial notch of ulna, each serving their specific functions as mentioned.

The anular ligament specifically supports the elbow joint and wraps around the radial head, providing stability and function to the area.

The carpal bones are a group of eight bones in the wrist that connect the hand to the forearm. These bones play a crucial role in hand and wrist movement.

The correct answer includes specific joints found in the wrist and hand region, while the incorrect answers mention joints from other parts of the body.

The wrist joint connects the radius and ulna with specific carpals in the hand, not other bones in the body.

The correct answer is that the Latissimus dorsi muscle is supplied by the thoracodorsal nerve and artery, with its function being extension, adduction, and medial rotation of the arm. The other options provided are incorrect as they do not correspond to the actual nerve, artery, or function of the Latissimus dorsi muscle.

The function of the rhomboid major and minor muscles is to retract and elevate the scapula, they are innervated by the dorsal scapular nerve, and the rhomboid major is inferior to the rhomboid minor.

The rotator cuff muscles, commonly referred to as SITS muscles, include Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis. These muscles play a crucial role in stabilizing the shoulder joint and facilitating arm movement.

The shoulder girdle consists of the scapula (shoulder blade) and clavicle (collarbone), which connect the upper limb to the axial skeleton.

The upper extremity includes bones such as the humerus, radius, ulna, carpals, metacarpals, and phalanges. The incorrect answers provided do not belong to the upper extremity.

The correct answer is the glenoid cavity of the scapula because it forms the shoulder joint.

The greater and lesser tubercles are bony protrusions on the humerus bone, the head is the spherical top portion of the bone, the neck is the narrow portion just below the head, and the intertubercular groove is the depression between the tubercles.

The deltoid muscle attaches to the deltoid tuberosity on the humerus, allowing for movement of the shoulder joint.

The correct answer is Capitulum (lateral)--Radius, Trochlea (medial)--Ulna. The condyles on the radius and ulna are named specifically based on their structure and location within the forearm.

The correct answer specifies the coronoid fossa as located anteriorly on the humerus, while the olecranon fossa is located posteriorly.

The shoulder consists of the Sternoclavicular joint, Acromioclavicular joint, Glenohumeral joint, not the Elbow joint, Knee joint, or Hip joint.

The sternoclavicular joint is a key anatomical structure in the human body as it connects the upper extremities to the central skeleton, allowing for a wide range of arm movements and offering stability during various activities.

The acromioclavicular joint is located between the acromion of the scapula and the clavicle in the shoulder region.

The glenohumeral joint is a ball and socket joint located between the head of the humerus and the glenoid cavity in the scapula. Hinge joints allow movement in one plane, pivot joints allow rotational movement, and gliding joints allow sliding movements between bones.

The glenoid labrum lines the glenoid cavity in the scapula providing additional support for the shoulder joint. While cartilage is involved in joint structures, the specific lining in the glenoid cavity is the glenoid labrum. The synovial membrane produces synovial fluid for lubrication, and a bursa is a fluid-filled sac that helps reduce friction between tissues.

The radius is indeed the lateral forearm bone on the thumb side. Its major components include the head (capitulum), radial tuberosity, and styloid process.

The ulna is actually a bone located in the forearm on the pinky side and has specific components such as the trochlear notch, olecranon process, coronoid process, and styloid process.

The pivot joint involved in the rotation of the radius is the capitulum, allowing for pronation (inward rotation) and supination (outward rotation) of the forearm.

The carpal arch is covered by the flexor retinaculum tissue, which helps form the carpal tunnel. The incorrect answers do not accurately describe the structures involved in this process.

The carpometacarpal joint is a saddle joint specifically between the first metacarpal and the trapezium bone in the hand, allowing for the unique movements of the thumb.

Metacarpophalangeal joints are condylar joints allowing for flexion, extension, abduction, and adduction movements, while interphalangeal joints are hinge joints allowing for flexion and extension movements.

The correct muscles found in the shoulder are the latissimus dorsi, rhomboid major and minor, teres major and minor groups.

The teres major functions in medial rotation of the arm, while the teres minor functions in lateral rotation. Both are part of the rotator cuff, aiding in shoulder stability and movement.

In the pronated position, the ulna and radius are crossed over each other, with the radius on top of the ulna. This positioning allows for the hand to be in a palm-down orientation.