This article needs to be updated. The reason given is: no files for 2006 are listed at the cited source, but files for 2013 are there; NLM releases this information annually. Please help update this article to reflect recent events or newly available information. (February 2020)

The following is a partial list of the "A" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM).

This list continues the information at List of MeSH codes (A01). Codes following these are found at List of MeSH codes (A03). For other MeSH codes, see List of MeSH codes.

The source for this content is the set of 2006 MeSH Trees from the NLM.

MeSH  A02 – musculoskeletal system

MeSH  A02.083 – aponeurosis

MeSH  A02.165 – cartilage

MeSH  A02.165.257 – elastic cartilage

• MeSH  A02.165.257.250 – ear cartilages
• MeSH  A02.165.257.625 – laryngeal cartilages
  • MeSH  A02.165.257.625.083 – arytenoid cartilage
  • MeSH  A02.165.257.625.211 – cricoid cartilage
  • MeSH  A02.165.257.625.411 – epiglottis
  • MeSH  A02.165.257.625.870 – thyroid cartilage

MeSH  A02.165.308 – fibrocartilage

• MeSH  A02.165.308.410 – intervertebral disc
  • MeSH  A02.165.308.410.250 – annulus fibrosus
  • MeSH  A02.165.308.410.500 – nucleus fibrosus
• MeSH  A02.165.308.538 – meniscus
  • MeSH  A02.165.308.538.500 – tibial menisci
• MeSH  A02.165.308.575 – palmar plate
• MeSH  A02.165.308.650 – plantar plate
• MeSH  A02.165.308.800 – triangular fibrocartilage

MeSH  A02.165.407 – hyaline cartilage

• MeSH  A02.165.407.150 – articular cartilage
• MeSH  A02.165.407.325 – costal cartilage
• MeSH  A02.165.407.500 – laryngeal cartilages
  • MeSH  A02.165.407.500.083 – arytenoid cartilage
  • MeSH  A02.165.407.500.211 – cricoid cartilage
  • MeSH  A02.165.407.500.411 – epiglottis
  • MeSH  A02.165.407.500.870 – thyroid cartilage
• MeSH  A02.165.407.550 – nasal cartilages

MeSH  A02.340 – fascia

MeSH  A02.340.424 – fascia lata

MeSH  A02.340.800 – tenon capsule

MeSH  A02.513 – ligaments

MeSH  A02.513.170 – broad ligament

MeSH  A02.513.514 – articular ligament

• MeSH  A02.513.514.100 – anterior cruciate ligament
• MeSH  A02.513.514.162 – collateral ligament
  • MeSH  A02.513.514.162.250 – ulnar collateral ligament
  • MeSH  A02.513.514.162.500 – lateral ligament, ankle
  • MeSH  A02.513.514.162.600 – knee medial collateral ligament
• MeSH  A02.513.514.287 – ligamentum flavum
• MeSH  A02.513.514.350 – longitudinal ligaments
• MeSH  A02.513.514.475 – patellar ligament
• MeSH  A02.513.514.538 – plantar plate
• MeSH  A02.513.514.600 – posterior cruciate ligament
• MeSH  A02.513.514.800 – round ligament of femur

MeSH  A02.513.901 – round ligament

• MeSH  A02.513.901.500 – femur round ligament
• MeSH  A02.513.901.750 – liver round ligament
• MeSH  A02.513.901.875 – uteri round ligament

MeSH  A02.633 – muscles

MeSH  A02.633.567 – skeletal muscle

• MeSH  A02.633.567.050 – abdominal muscles
  • MeSH  A02.633.567.050.375 – abdominal oblique muscles
  • MeSH  A02.633.567.050.750 – pelvic floor
  • MeSH  A02.633.567.050.800 – rectus abdominis
• MeSH  A02.633.567.175 – back muscles
  • MeSH  A02.633.567.175.500 – intermediate back muscles
  • MeSH  A02.633.567.175.750 – paraspinal muscles
  • MeSH  A02.633.567.175.875 – superficial back muscles
• MeSH  A02.633.567.300 – deltoid muscle
• MeSH  A02.633.567.400 – facial muscles
• MeSH  A02.633.567.425 – gracilis muscle
• MeSH  A02.633.567.450 – hamstring muscles
• MeSH  A02.633.567.500 – laryngeal muscles
• MeSH  A02.633.567.600 – masticatory muscles
  • MeSH  A02.633.567.600.500 – masseter muscle
  • MeSH  A02.633.567.600.700 – pterygoid muscles
  • MeSH  A02.633.567.600.850 – temporal muscle
• MeSH  A02.633.567.650 – neck muscles
• MeSH  A02.633.567.700 – oculomotor muscles
• MeSH  A02.633.567.750 – palatal muscles
• MeSH  A02.633.567.775 – pectoralis muscles
• MeSH  A02.633.567.800 – pharyngeal muscles
  • MeSH  A02.633.567.800.360 – upper esophageal sphincter
  • MeSH  A02.633.567.800.680 – velopharyngeal sphincter
• MeSH  A02.633.567.825 – pasoas muscles
• MeSH  A02.633.567.850 – quadriceps muscle
• MeSH  A02.633.567.900 – respiratory muscles
  • MeSH  A02.633.567.900.300 – diaphragm
  • MeSH  A02.633.567.900.500 – intercostal muscles
• MeSH  A02.633.567.912 – rotator cuff
• MeSH  A02.633.567.950 – stapedius
• MeSH  A02.633.567.975 – tensor tympani

MeSH  A02.633.570 – smooth muscle

• MeSH  A02.633.570.210 – lower esophageal sphincter
• MeSH  A02.633.570.491 – smooth vascular muscle
• MeSH  A02.633.570.500 – myometrium

MeSH  A02.633.580 – myocardium

• MeSH  A02.633.580.680 – papillary muscles

MeSH  A02.734 - myotendinous junction

MeSH  A02.835 – skeleton

MeSH  A02.835.232 – bone and bones

• MeSH  A02.835.232.022 – bone-impact interface
• MeSH  A02.835.232.043 – bones of lower extremity
  • MeSH  A02.835.232.043.150 – femur
    • MeSH  A02.835.232.043.150.343 – femur head
    • MeSH  A02.835.232.043.150.510 – femur neck
  • MeSH  A02.835.232.043.300 – foot bones
    • MeSH  A02.835.232.043.300.492 – metatarsal bones
    • MeSH  A02.835.232.043.300.710 – tarsal bones
      • MeSH  A02.835.232.043.300.710.300 – calcaneus
      • MeSH  A02.835.232.043.300.710.780 – talus
    • MeSH  A02.835.232.043.300.800 – toe phalanges
  • MeSH  A02.835.232.043.650 – leg bones
    • MeSH  A02.835.232.043.650.321 – fibula
    • MeSH  A02.835.232.043.650.624 – patella
    • MeSH  A02.835.232.043.650.883 – tibia
  • MeSH  A02.835.232.043.825 – pelvic bones
    • MeSH  A02.835.232.043.825.108 – acetabulum
    • MeSH  A02.835.232.043.825.434 – ilium
    • MeSH  A02.835.232.043.825.548 – ischium
    • MeSH  A02.835.232.043.825.781 – public bone
• MeSH  A02.835.232.087 – bones of upper extremity
  • MeSH  A02.835.232.087.090 – arm bones
    • MeSH  A02.835.232.087.090.400 – humerus
      • MeSH  A02.835.232.087.090.400.400 – humeral head
    • MeSH  A02.835.232.087.090.700 – radius
    • MeSH  A02.835.232.087.090.850 – ulna
      • MeSH  A02.835.232.087.090.850.600 – olecranon process
  • MeSH  A02.835.232.087.227 – clavicle
  • MeSH  A02.835.232.087.319 – hand bones
    • MeSH  A02.835.232.087.319.150 – carpal bones
      • MeSH  A02.835.232.087.319.150.150 – capitate bone
      • MeSH  A02.835.232.087.319.150.400 – hamate bone
      • MeSH  A02.835.232.087.319.150.500 – lunate bone
      • MeSH  A02.835.232.087.319.150.600 – pisiform bone
      • MeSH  A02.835.232.087.319.150.750 – scaphoid bone
      • MeSH  A02.835.232.087.319.150.800 – trapezium bone
      • MeSH  A02.835.232.087.319.150.805 – trapezoid bone
      • MeSH  A02.835.232.087.319.150.831 – triquetrum bone
    • MeSH  A02.835.232.087.319.350 – finger phalanges
    • MeSH  A02.835.232.087.319.550 – metacarpal bones
  • MeSH  A02.835.232.087.783 – scapula
    • MeSH  A02.835.232.087.783.261 – acromion
    • MeSH  A02.835.232.087.783.356 – coracoid process
    • MeSH  A02.835.232.087.783.450 – glenoid cavity
• MeSH  A02.835.232.169 – diaphyses
• MeSH  A02.835.232.251 – epiphyses
  • MeSH  A02.835.232.251.352 – growth plate
• MeSH  A02.835.232.409 – hyoid bones
• MeSH  A02.835.232.570 – rib cage
  • MeSH  A02.835.232.570.500 – ribs
    • MeSH  A02.835.232.570.500.150 – cervical rib
  • MeSH  A02.835.232.570.750 – sternum
    • MeSH  A02.835.232.570.750.442 – manubrium
    • MeSH  A02.835.232.570.750.825 – xiphoid bone
• MeSH  A02.835.232.730 – sesamoid bones
  • MeSH  A02.835.232.730.500 – patella
• MeSH  A02.835.232.781 – skull
  • MeSH  A02.835.232.781.175 – cranial fontanelles
  • MeSH  A02.835.232.781.200 – cranial sutures
  • MeSH  A02.835.232.781.292 – ethmoid bone
  • MeSH  A02.835.232.781.324 – facial bones
    • MeSH  A02.835.232.781.324.502 – jaw
      • MeSH  A02.835.232.781.324.502.125 – alveolar process
        • MeSH  A02.835.232.781.324.502.125.800 – tooth socket
      • MeSH  A02.835.232.781.324.502.320 – dental arch
      • MeSH  A02.835.232.781.324.502.632 – mandible
        • MeSH  A02.835.232.781.324.502.632.130 – chin
        • MeSH  A02.835.232.781.324.502.632.365 – mandibular canal
        • MeSH  A02.835.232.781.324.502.632.600 – mandibular condyle
        • MeSH  A02.835.232.781.324.502.632.800 – mental foramen
      • MeSH  A02.835.232.781.324.502.645 – maxilla
      • MeSH  A02.835.232.781.324.502.660 – hard palate
    • MeSH  A02.835.232.781.324.665 – nasal bone
    • MeSH  A02.835.232.781.324.690 – orbit
    • MeSH  A02.835.232.781.324.948 – turbinates
    • MeSH  A02.835.232.781.324.971 – vomer
    • MeSH  A02.835.232.781.324.995 – zygoma
  • MeSH  A02.835.232.781.375 – frontal bone
  • MeSH  A02.835.232.781.572 – occipital bone
    • MeSH  A02.835.232.781.572.434 – foramen magnum
  • MeSH  A02.835.232.781.651 – parietal bone
  • MeSH  A02.835.232.781.670 – pterygopalatine fossa
  • MeSH  A02.835.232.781.750 – skull base
    • MeSH  A02.835.232.781.750.150 – anterior cranial fossa
    • MeSH  A02.835.232.781.750.165 – middle cranial fossa
    • MeSH  A02.835.232.781.750.400 – posterior cranial fossa
      • MeSH  A02.835.232.781.750.400.500 – jugular foramina
    • MeSH  A02.835.232.781.750.700 – infratemporal fossa
    • MeSH  A02.835.232.781.750.850 – parapharyngeal space
  • MeSH  A02.835.232.781.802 – sphenoid bone
    • MeSH  A02.835.232.781.802.662 – sella turcica
  • MeSH  A02.835.232.781.885 – temporal bone
    • MeSH  A02.835.232.781.885.444 – mastoid
    • MeSH  A02.835.232.781.885.681 – petrous bone
• MeSH  A02.835.232.834 – spine
  • MeSH  A02.835.232.834.151 – cervical vertebrae
    • MeSH  A02.835.232.834.151.383 – cervical vertebra axis
      • MeSH  A02.835.232.834.151.383.668 – odontoid process
    • MeSH  A02.835.232.834.151.500 – cervical atlas
  • MeSH  A02.835.232.834.229 – coccyx
  • MeSH  A02.835.232.834.432 – intervertebral disc
    • MeSH  A02.835.232.834.432.250 – annulus fibrosus
    • MeSH  A02.835.232.834.432.500 – nucleus pulposus
  • MeSH  A02.835.232.834.519 – lumbar vertebrae
  • MeSH  A02.835.232.834.717 – sacrum
  • MeSH  A02.835.232.834.803 – spinal canal
    • MeSH  A02.835.232.834.803.350 – epidural space
  • MeSH  A02.835.232.834.892 – thoracic vertebrae
  • MeSH  A02.835.232.834.946 – vetebral body

MeSH  A02.835.583 – joints

• MeSH  A02.835.583.032 – acromioclavicular joint
• MeSH  A02.835.583.097 – atlanto-axial joint
• MeSH  A02.835.583.101 – atlanto-occipital joint
• MeSH  A02.835.583.156 – synovial bursa
• MeSH  A02.835.583.192 – articular cartilage
• MeSH  A02.835.583.290 – elbow joint
• MeSH  A02.835.583.378 – foot joints
  • MeSH  A02.835.583.378.062 – ankle joint
  • MeSH  A02.835.583.378.531 – metatarsophalangeal joint
    • MeSH  A02.835.583.378.531.500 – plantar plate
  • MeSH  A02.835.583.378.831 – tarsal joints
    • MeSH  A02.835.583.378.831.780 – subtalar joint
  • MeSH  A02.835.583.378.900 – toe joint
    • MeSH  A02.835.583.378.900.500 – plantar plate
• MeSH  A02.835.583.405 – hand joints
  • MeSH  A02.835.583.405.174 – carpal joints
  • MeSH  A02.835.583.405.200 – carpometacarpal joints
  • MeSH  A02.835.583.405.350 – finger joint
  • MeSH  A02.835.583.405.500 – metacarpophalangeal joint
    • MeSH  A02.835.583.405.500.900 – palmar plate
  • MeSH  A02.835.583.405.930 – wrist joint
    • MeSH  A02.835.583.405.930.800 – triangular fibrocartilage
• MeSH  A02.835.583.411 – hip joint
  • MeSH  A02.835.583.411.500 – round ligament of femur
• MeSH  A02.835.583.443 – joint capsule
  • MeSH  A02.835.583.443.800 – synovial membrane
    • MeSH  A02.835.583.443.800.800 – synovial fluid
• MeSH  A02.835.583.475 – knee joint
  • MeSH  A02.835.583.475.590 – tibial menisci
  • MeSH  A02.835.583.475.650 – patellofemoral joint
• MeSH  A02.835.583.512 – articular ligaments
  • MeSH  A02.835.583.512.100 – anterior cruciate ligament
  • MeSH  A02.835.583.512.162 – collateral ligaments
    • MeSH  A02.835.583.512.162.250 – ulnar collateral liagment
    • MeSH  A02.835.583.512.162.500 – ankle lateral liagment
    • MeSH  A02.835.583.512.162.600 – knee medial collateral liagment
  • MeSH  A02.835.583.512.287 – ligamentum flavum
  • MeSH  A02.835.583.512.350 – longitudinal ligaments
  • MeSH  A02.835.583.512.400 – palmar plate
  • MeSH  A02.835.583.512.475 – patellar liagment
  • MeSH  A02.835.583.512.538 – plantar plate
  • MeSH  A02.835.583.512.600 – posterior cruciate liagment
  • MeSH  A02.835.583.512.950 – round ligament of femur
• MeSH  A02.835.583.656 – pubic symphysis
• MeSH  A02.835.583.707 – sacroiliac joint
• MeSH  A02.835.583.748 – shoulder joint
• MeSH  A02.835.583.781 – sternoclavicular joint
• MeSH  A02.835.583.790 – sternocostal joints
• MeSH  A02.835.583.861 – temporomandibular joint
  • MeSH  A02.835.583.861.900 – temporomandibular joint disc
• MeSH  A02.835.583.979 – zygapophyseal joint

MeSH  A02.880 – tendons

MeSH  A02.880.176 – achilles tendon

MeSH  A02.880.307 – hamstring tendons

MeSH  A02.880.438 – patellar ligament

MeSH  A02.880.700 – rotator cuff

The list continues at List of MeSH codes (A03).