The bone that has acromion process and coracoid process is?

RUHS, Jaipur, PB B.Sc Nursing Entrance-2019

Applied Anatomy

Easy

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2019

Explanation

The scapula is a large, triangular bone situated on the posterolateral aspect of the thorax, overlying the 2nd to 7th ribs.
According to Gray's Anatomy, the scapula is characterized by three main processes: the spine, the acromion, and the coracoid process.
The acromion forms the bony summit of the shoulder and articulates with the clavicle.
The coracoid process is a thick, hook-like structure that projects anterolaterally, providing attachment for ligaments and muscles.

Option A: The clavicle (collarbone) is a long bone that connects the sternum and scapula. It has an acromial end that articulates with the acromion, but it does not have an acromion or coracoid process as part of its own structure.
Option C: The humerus is the long bone of the upper arm. Its proximal end features the head (which articulates with the glenoid cavity of the scapula), the anatomical neck, and the greater and lesser tubercles. It does not have an acromion or coracoid process.
Option D: The sternum, or breastbone, is a flat bone in the anterior midline of the chest. It is composed of the manubrium, body, and xiphoid process. It is part of the axial skeleton and has no acromion or coracoid process.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy of the pectoral (shoulder) girdle as background academic context rather than a clinical decision trigger.
A thorough knowledge of scapular anatomy is essential for nurses when assessing patients with shoulder pain, instability, or trauma.
Pain palpated over the acromion is a classic sign of acromioclavicular (AC) joint injury, while the coracoid process serves as a key landmark for certain nerve blocks and surgical approaches.
The subacromial space, located beneath the acromion, is a common site for impingement syndrome, where rotator cuff tendons can become inflamed and compressed, leading to pain and reduced range of motion.

How to Approach the Question

This is a factual recall question testing knowledge of skeletal anatomy.
First, identify the key anatomical terms in the question: 'acromion process' and 'coracoid process'.
Mentally review the bones of the shoulder girdle and upper torso: Clavicle (collarbone), Scapula (shoulder blade), Humerus (upper arm bone), and Sternum (breastbone).
Systematically evaluate each option by recalling its major features.
Associate the specific, named processes with the correct bone. The scapula is uniquely defined by these two prominent, named projections.
Eliminate the other options based on their known anatomical features, which do not include an acromion or coracoid process.

Concept Tested & Keywords

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E6 Anatomy Grays 43e Vol 2 Part 2 pp. 79-81, 80-82

E6 Anatomy BDChaurasia V1 10e p. 22-24