Anatomy of the Scapula

Play an AI-generated podcast conversation about this lesson

What is the primary function of the scapula as a lateral strut?

To extend the elbow joint
To flex the shoulder joint
To resist pressure in the direction of its length (correct)
To rotate the humerus

What is the surface of the scapula that faces the ribs?

Subscapular Fossa (correct)
Subclavian Groove
Infraspinous Fossa
Supraspinous Fossa

What is the attachment point for the Conoid Ligament on the scapula?

Subclavian Groove
Trapezoid Line
Conoid Tubercle (correct)
Spine of Scapula

Which borders of the scapula are adjacent to the vertebrae?

Medial and Lateral Borders (B) Signup and view all the answers

What is the function of the scapula in relation to reaching and climbing?

It increases shoulder joint mobility (D) Signup and view all the answers

What is the shape of the scapula?

Flat, triangular bone (B) Signup and view all the answers

What is the shape of the Costoclavicular Ligament?

Rhomboid (D) Signup and view all the answers

What is the function of the Coracoacromial Ligament?

To provide support to the Head of the Humerus (D) Signup and view all the answers

What type of joint is the Acromioclavicular Joint?

Plane Synovial (A) Signup and view all the answers

What is the Glenoid Labrum?

A fibrous ring surrounding the rim of the glenoid fossa (B) Signup and view all the answers

What is the degree of freedom in the Glenohumeral Joint?

Three degrees (C) Signup and view all the answers

What is the function of the Bursa?

To reduce friction between two structures (C) Signup and view all the answers

Which carpal bone occupies the central position at the wrist?

Capitate (C) Signup and view all the answers

Which structure provides attachment for the Flexor Carpi Ulnaris?

Pisiform (B) Signup and view all the answers

Which carpal bone is most frequently dislocated?

Lunate (D) Signup and view all the answers

What is the function of the Fovea?

Provides attachment for the Fibrocartilaginous Disc (C) Signup and view all the answers

What is the shape of the Pisiform bone?

Pea-shaped (D) Signup and view all the answers

What is the proximal articulation of the Metacarpals?

With the Carpal Bones (D) Signup and view all the answers

What type of joint is the Carpometacarpal Joint (Thumb) classified as?

Synovial Saddle (C) Signup and view all the answers

Which metacarpal bones form the Carpometacarpal Joint (Fingers)?

2nd and 5th Metacarpal (C) Signup and view all the answers

What is the shape of the articular surface of the Head of the Metacarpal?

Biconvex (D) Signup and view all the answers

How many degrees of freedom does the Metacarophalangeal Joint have?

Two (A) Signup and view all the answers

What is the characteristic of the Shaft of the Metacarpal?

Slightly curved with palmar concavity (D) Signup and view all the answers

How many phalanges are present in each finger, excluding the thumb?

Three (C) Signup and view all the answers

What is the attachment site of the medial and collateral ligaments?

Metacarpals to phalanges (D) Signup and view all the answers

What occurs when the joints are flexed in terms of the points of attachment of the medial and collateral ligaments?

A longer distance (A) Signup and view all the answers

What is the orientation of the Flexor Retinaculum?

Horizontal (mediolateral direction) (A) Signup and view all the answers

What is the function of the Flexor Retinaculum?

To form a tunnel for the tendons (D) Signup and view all the answers

What is the attachment site of the Transverse Carpal Ligament?

Pisiform and Hook of Hamate medially and Scaphoid laterally (B) Signup and view all the answers

What is the function of the Extensor Retinaculum?

To form a tunnel for the tendons (B) Signup and view all the answers

Scapula's lateral strut function

Resist pressure along its length.

Subscapular Fossa

Rib-facing surface of the scapula.