Podcast
Questions and Answers
The scapula is categorized as a round bone.
False
The scapula has two surfaces known as lateral and medial.
True
There are five borders and angles present in the scapula.
False
The scapula is a component of the shoulder girdle.
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The term 'cranio ventrally' describes a position of the scapula.
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Study Notes
Scapula Overview
- The scapula is a flat bone located in the shoulder girdle.
- It has two surfaces: lateral and medial.
- It has three borders and three angles.
- The lateral surface (also called the posterior surface) contains two fossae: the supraspinous fossa (the smaller one) and the infraspinous fossa (the larger one).
- The infraspinous fossa contains the infraspinatus muscle, a muscular groove, a nutrient foramen, and a vascular groove.
Medial Surface
- The medial surface faces the serratus ventralis muscle which attaches to it.
Angles
- The scapula has three angles: cranial, caudal, and vertebral.
Vertebral Angle
- The vertebral angle contains:
- The glenoid cavity which is a shallow depression where the humerus articulates with the scapula.
- The glenoid notch superior to the glenoid cavity.
- The supraglenoid tubercle, located above the glenoid notch, which serves as the origin of the biceps brachii muscle.
- The infraglenoid tubercle, located below the glenoid notch, which serves as the origin of the teres minor muscle.
Coracoid Process
- The coracoid process provides attachment points for the coracobrachialis muscle.
- The coracoid process is present in all animals except for horses.
Acromion Process
- The acromion process is part of the spine of the scapula and is present in all animals.
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Description
Test your knowledge about the scapula, including its structure, surfaces, and angles. This quiz covers key features such as the glenoid cavity, fossae, and muscle attachments. Perfect for students studying anatomy and the shoulder girdle.
