Log in
Anatomy

Myology

47 topics with concise reviews: definitions, key facts, and class questions.

The Myology section is dedicated to the study of the human muscular system, from its development to complex biomechanics. Here we break down not only the origins and insertions of muscles, but also critical topographical structures essential for clinical practice.

The material covers all body regions. You will study the superficial and deep muscles of the back, chest, and abdomen, including the diaphragm and the internal topography of the anterior abdominal wall. The musculature of the head and neck is covered in detail (facial muscles, muscles of mastication, triangles of the neck), along with the anatomy of the upper and lower extremities—from the shoulder girdle to the short extensors of the toes. Special attention is paid to fascial nodes: palmar tendon sheaths, aponeuroses, and fasciae.

In practical classes and exams, topography is tested most rigorously. Pay special attention to the inguinal canal, the rectus sheath, the triangles of the neck, the contents of the cubital fossa, and the canals of the lower extremity. Understanding these structures is your foundation for a successful transition to topographical anatomy and operative surgery.

Section Topics

Regions of the backRegiones dorsalesDeep muscles of the backMusculi dorsi propriiFasciae of the backFasciae dorsiSuperficial muscles of the chestMusculi thoracisDeep muscles of the chestMusculi intercostalesFasciae of the chestFasciae thoracisMuscles of the lateral abdominal wallMusculi abdominisMuscles of the anterior abdominal wallMusculus rectus abdominisSheath of the rectus abdominis muscleVagina musculi recti abdominisSuperficial muscles of the neckMusculi colli superficialesTriangles of the neckTrigona colliMuscles of the shoulder girdleMusculi cinguli membri superiorisMuscles of the arm (anterior compartment)The anterior compartment of the arm muscles includes three main muscles: the bicepsMuscles of the arm (posterior compartment)The posterior compartment of the arm muscles is formed by powerful extensors that proMuscles of the forearm (anterior compartment)The anterior compartment of the forearm muscles is a complex apparatus consisting of prMuscles of the leg: anterior and lateral compartmentsMusculi crurisMuscles of the foot: middle plantar compartmentMusculi plantaresMuscles and fasciae of the thoraxMusculi thoracisMuscles of the neck: median groupMusculi colliFacial muscles of the mouthMusculi facialesMuscles of the shoulder girdle: teres minor and teres majorThe teres minor muscle is an integral part of the muscular apparatus of the shouMuscles of the forearm: extensor indicisMusculus extensor indicisFasciae of the forearm and handFascia antebrachiiMuscles of the pelvis and thigh: tensor fasciae latae and vastus musclesMusculi femorisExtensor digitorum brevisMusculus extensor digitorum brevisDiaphragmDiaphragmaPalmar synovial sheaths and aponeurosisAponeurosis palmarisPiriformis muscleMusculus piriformisTrapezius muscleMusculus trapeziusRegions and fasciae of the abdomenRegiones abdominalesInfrahyoid muscles of the neckMusculi infrahyoideiMuscles of masticationMusculi masticatoriiFunctional axes and tests of the upper extremityFunctional tests of the upper extremity allow evaluation of the integrity of Popliteus muscleMusculus popliteusLatissimus dorsi muscleMusculus latissimus dorsiInternal relief of the anterior abdominal wallThe internal surface of the anterior abdominal wall has a complex reliefSuboccipital musclesMusculi suboccipitalesContents of the cubital fossaThe cubital fossa is an important topographical and anatomical space of the upper extremityObturator internus muscleMusculus obturatorius internusFlexor digitorum longus muscleMusculus flexor digitorum longusObturator externus muscleMusculus obturatorius externusInguinal canalCanalis inguinalisLevator scapulae muscleMusculus levator scapulaeSplenius musclesMusculi spleniiFasciae of the lower extremityFasciae membri inferiorisCanals and fossae of the lower extremityCanals and fossae of the lower extremity are topographical and anatomical spacesDevelopment of the muscular systemSkeletal musculature is formed predominantly from paraxial mesoderm

Frequently asked questions for this section

What bony landmarks define the boundaries of the scapular region?

Key landmarks are the angles of the scapula: the superior angle is at the level of the 2nd rib, and the inferior angle projects at the level of the 7th rib.

What structure covers the intrinsic muscles of the back?

Deep muscles of the back lie beneath a dense aponeurotic covering—the thoracolumbar fascia (fascia thoracolumbalis).

In which spinal region is the thoracolumbar fascia thickest?

It is thickest and strongest in the lumbar region, whereas it thins out in the upper thoracic regions.

How do the superficial chest muscles participate in the act of respiration?

When the upper extremity is fixed (e.g., when a person leans hands on a table during shortness of breath), the pectoralis major and minor change their fulcrum and begin to pull the ribs upward, expanding the chest for inspiration.

Which deep chest muscles ensure inspiration?

Only the external intercostal muscles participate in the act of inspiration (elevation of the ribs).

Which muscles are covered by the lamina profunda of the pectoral fascia?

The deep layer encloses the pectoralis minor and subclavius muscles.

Study the complete topic in the Anatomy course

This is a summary. The course covers everything tested in classes and exams.

  • 1,363 pages of study guides on all topics
  • Assignments and quizzes after every topic — just like in a colloquium
  • AI tutor answers questions on the topic anytime
  • 295 video lessons by subject
All sections of the subject "Anatomy"