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ANATOMY / REFERENCE GALLERY1 / 2 references
This multipart figure shows the different muscles that move the forearm. The major muscle groups are labeled.
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Biceps brachii: long head

Long head arises from the supraglenoid/labral region.

Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.

This multipart figure shows the different muscles that move the forearm. The major muscle groups are labeled.

Image: OpenStax / University of Hawaiʻi adapted teaching figures; original contributors credited at source · Source / original · CC BY 4.0 — figure credits at source

Numbered markers and focused views are Mediveerse learning overlays; the original reference is linked above.

Triceps brachii

Shoulder & arm muscles

Triceps brachii

STRUCTURE & FUNCTION

Understand what you see.

Principal elbow extensor; long head also crosses the shoulder.

Zoom into the original labels. Practise pointing out each structure, then explain it aloud. Diagrams are teaching references; specimen appearance and slide staining vary.

01 / IDENTIFICATION

How to recognise it.

  1. Three heads in posterior arm
  2. Long head arises from scapula
  3. Common tendon inserts on olecranon
02 / KEY STRUCTURES

Point them out.

Tap a number to open its reference, zoom in and locate the structure. Numbers stay the same across views. This key follows landmarks visible in the reference images.

Related features & study points (2)

Additional relations, attachments or microscopic details to revise alongside this plate. These are separate from its numbered image landmarks.

  • Lateral head
  • Medial head
03 / VIVA PRACTICE

Think first. Then reveal.

Say your answer aloud before opening the suggested response.

01How do you identify triceps brachii?
SUGGESTED ANSWER

Three heads in posterior arm. Long head arises from scapula. Common tendon inserts on olecranon.

02Which nerve supplies it?
SUGGESTED ANSWER

Radial nerve, with C7 especially important for the triceps reflex.

03Which head crosses the glenohumeral joint?
SUGGESTED ANSWER

Long head, arising from infraglenoid tubercle. The other heads arise on humerus.

04What is its main functional or developmental significance?
SUGGESTED ANSWER

Principal elbow extensor; long head also crosses the shoulder. Key structures to recognise: Long head; Lateral head; Medial head.

Read the references.

Credited anatomical plates, microscopy and university teaching references. Individual image credits appear below the viewer. Historical plates can use older terminology; use the lesson text for current names.