Labium majus

The large lip of the vulva is called labium majus and it is a homologue of the male scrotum. The small lip is the homologue of male penile urethra. The structures share the same embryological origin and similar vessels and nerves. The large lips are also called labia majora (plural) or labia majora pudendi. They are hair-bearing and they meet posteriorly at the commissure of labia (or posterior commissure) and anteriorly at the anterior commissure where they are more prominent. They structurally contain fatty tissue mingled with connective tissue and striated muscles resembling those of dartos muscle of the scrotum. The round ligament of the uterus  is attached to the labium majus.

Arteries

bullet

External pudendal branches of femoral artery

bullet

Labial branches of internal pudendal artery

bullet

Cremasteric branch of inferior epigastric artery

Veins

bullet

Deep dorsal vein of clitoris

bullet

External pudendal tributaries of femoral vein or great saphenous vein

bullet

Labial tributaries of internal pudendal venae comitantes

bullet

Cremasteric tributary of inferior epigastric vein

Nerves

bullet

From L1 nerve to anterior 1/3 of labium majus

bullet

Ilioinguinal nerve

bullet

Genital branch of genitofemoral nerve

bullet

From S3 nerve to posterior 2/3 of labium majus (2)

bullet

Posterior labial branches of perineal nerve

bullet

Perineal branch of posterior cutaneous nerve of thigh

bullet

Perineal branch of pudendal nerve for labia minora

 

There is nothing in anatomy not found in this website

Electronic School of Medicine
Creator: Oluwole Ogunranti


Pelvis 1 video          Layers of pelvis links       Electronic dissector    Structure locator


Pelvic diaphragm/perineum 3D rotation

 

 

 

Histology
Embryology
Gross anatomy
Lymphatic drainage
Organ integration
Clinical anatomy

Quiz

Dissector

Physiology

Biochemistry

Pharmacology

Chemical Pathology

Anatomical Pathology

Medicine

Surgery

Main Subject Course Links

eAnatomy eAnesthesia eBiochemistry eChemical pathology eCommunity Health
eDermatology eENT eGynecology eHematology eImaging
eMedicine eMedical microbiology eObstetrics eOphthalmology ePathology
ePediatrics ePharmacology ePhysiology ePsychiatry    eSurgery/eOrthopedics
eLab eOSCE eProcedures eInvestigations eSchool/Videopage
eOrgans eLocator Anatomy Museum eDissector eFractures/Dissect-it-yourself
All diseases eClerking eTreatment eDoctor ePatient