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[ICAR-IVRI] COMPLETE ANATOMY LEARNING PLATFORM

Developed at ICAR–IVRI, Bareilly

Structured veterinary anatomy notes for B.V.Sc., M.V.Sc. and DVM students—from structure to function.

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Teres Minor Veterinary Anatomy

/// STANDARD MORPHOLOGY // MYOLOGY

Educational resource developed at the Veterinary Anatomy Section, ICAR-Indian Veterinary Research Institute (ICAR-IVRI), Bareilly.

📝 STANDARD DESCRIPTION:
Type: Intrinsic, Scapulohumeral

Origin: Distal third of caudal border of scapula

Insertion: Teres minor tuberosity of humerus (proximal to deltoid tuberosity)

Function: Flexes shoulder joint and laterally rotates humerus.
📚 DETAILED DESCRIPTION:
THE ROTATOR CUFF ASSISTANT

A small muscle located deep to the deltoid and lateral head of the triceps, part of the functional 'rotator cuff' analog in cattle.

PRECISE LOCATION: Originates from the distal third of the caudal scapular border (caudal angle region), threading deep between larger lateral muscles.

FUNCTIONAL MECHANICS: Flexes the shoulder joint and laterally rotates the humerus. This rotation is subtle in cattle due to fused elbow joints but assists in positioning the hoof during landing.

// COMPARATIVE ANALYSIS

DOG More significant for shoulder rotation; larger relative size.
HORSE Similar small size; often fused with infraspinatus fascia in part.
CLINICAL RELEVANCE
Quadrangular Space: Teres minor helps form the caudal border of the quadrangular space (with subscapularis cranially, teres major caudally)—axillary nerve passes through here.
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