Items tagged “muscles”

16 results found
Article

Psoas major

The psoas major muscle (often referred to as the psoas muscle) is one of the muscles of the posterior abdominal wall and lies not in the retroperitoneum but posteriorly in the iliopsoas compartment. Summary origin: vertebral bodies, intervertebral discs and transverse processes of T12 to L5 i...
Case

Flexor and extensor insertions at the hand and wrist

Flexors
 Diagnosis not applicable
Dr Roberto Schubert
Published 24 Aug 2011
38% complete
Diagram
Article

Ocular adductors

The ocular adductors are the extra-ocular muscles responsible of adduction of the globe: medial rectus (primary function) inferior rectus (tertiary function) superior rectus (tertiary function)
Article

Extra-ocular muscles

The extra-ocular muscles are the six muscles that insert onto the eye and hence control eye movements: superior rectus: elevation superior oblique: intorsion medial rectus: adduction lateral rectus: abduction inferior oblique: extorsion inferior rectus: depression Associated pathology op...
Article

Eye movements

Eye movements are a complex set of movements of the globe that are performed by the extra-ocular muscles that are grouped by the muscles that perform particular movements: ocular adductors ocular abductors ocular elevators ocular depressors ocular internal rotators ocular external rotators
Article

Ocular abductors

The ocular abductors are the extra-ocular muscles responsible for abduction of the globe: lateral rectus (primary function) superior oblique (tertiary function) inferior oblique (tertiary function)
Article

Ocular elevators

The ocular elevators are the extra-ocular muscles responsible for elevation of the globe: superior rectus (primary function) inferior oblique (secondary function)
Article

Ocular internal rotators

The ocular internal (medial) rotators are the extra-ocular muscles responsible for internal rotation (intorsion) of the globe: superior oblique (primary function) superior rectus (secondary function)
Article

Ocular external rotators

The ocular external (lateral) rotators are the extra-ocular muscles responsible for external rotation (extorsion) of the globe: inferior oblique (primary function) inferior rectus (secondary function)
Article

Superior oblique muscle

The superior oblique muscle is one of the 6 extra-ocular muscles that control eye movements. It abducts, depresses and internally rotates the eye. Summary innervation: trochlear nerve (CN IV) origin: lesser wing of Sphenoid bone and is outside of Annulus of Zinn located supero-medially. inse...
Article

Inferior oblique muscle

The inferior oblique muscle is one of six extra-ocular muscles that control eye movements. Summary innervation: inferior branch of the oculomotor nerve (CN III) origin: orbital surface of the maxilla insertion: globe (posterior, inferolateral surface) primary function: one of two ocular ext...
Case

Thigh muscles: cross sectional anatomy

 Diagnosis not applicable
Dr Roberto Schubert
Published 19 Feb 2012
7% complete
Diagram
Article

Biceps brachii

The biceps brachii muscle (also known simply as biceps) is a two-headed muscle in the anterior compartment of the arm that flexes at the elbow and supinates the forearm. Summary origin short head: coracoid process of the scapula long head: supraglenoid tubercle of the scapula insertion: rad...
Article

Brachialis

The brachialis muscle (brachialis) is one of the three muscles of the anterior compartment of the arm.  It is only involved in flexion at the elbow and therefore the strongest flexor at the elbow, compared with the biceps brachii which is also involved in supination because of its insertion on t...
Article

External intercostal muscle

The external (or outermost) intercostal muscles are important muscles of respiration. They number eleven on each side and are located in the intercostal space, expanding the transverse dimension of the thoracic cavity during inspiration. Gross anatomy The external intercostal muscles are the o...
Article

Internal intercostal muscle

The internal intercostal muscles are important muscles of respiration. They number eleven on each side and are located in the intercostal spaces, reducing the transverse dimension of the thoracic cavity during expiration. Gross anatomy The internal intercostal muscles are the middle muscle of ...

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