Parts modified to perform a single function in combination with other parts performing the same function , in whole they are like a large organ divided in to different shapes and tissues to coordinate together.

• Body compartments and cavities
  • Head
  • Neck
  • Trunk
  • Limbs
• Tubular Pathway or tracts
  • More central
    • Organs
      • hollow Organs
        • same kind of muscle
          • bladder , stomach
        • special muscle
          • heart
      • Solid Organs
  • More peripheral
    • Tubes , pipes , vessels or tracts
      • ureter , renal pelvis
        • nephron
      • vas deferens , epididymis
        • seminiferous tubules
      • pharynx , esophagus , intestines
      • arteries , veins and capillaries
      • fallopian tube
  • More particular and systemic
    • External conduit , outside materials to inside
      • Breath pathway
      • Food pathway
    • Internal Conduit
      • Open
        • Genital tract
          • female genital tract
          • Male genital tract
        • Excretory pathway
      • Closed
        • Cardiovascular pathway
        • Lymphatic pathway
        • ventricular pathway
• Communication Network
  • fibrous / Neural Network
  • Chemical /Endocrine Network
• Framework
  • Skeletal framework
    • Bone
  • Muscular Framework
    • muscle
    • diaphragm
    • tendon
  • Skin framework
    • Skin
  • Fibrous tissue
    • Fascia
    • MENINGES
    • ligament
    • peritoneum , pericardium , pleura
    • mesentry , mesocolon , meso-salpinx

• RESPIRATORY SYSTEM

Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.

• Nose
• Nasopharynx
• Laryngopharynx
• Larynx
• trachea
• Bronchi
  • Bronchioles
    • Alveoli
• Lungs

• cardiovascular system

Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away. Keeps the body's temperature in a safe range.

• Heart
• Arteries
• Veins
• Capillaries

• DIGESTIVE SYSTEM

System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines. Eliminates waste from the body.

• Mouth
  • Teeth
  • Tongue
• Salivary gland
  • Parotid glands
  • Submandibular glands
  • Sublingual glands
• PHARYNX
• Oesophagus
• Stomach
• Small intestine
  • Duodenum
  • Jejunum
  • Ileum
• Large intestine
  • Cecum
  • Ascending colon
  • Transverse colon
  • Descending colon
• Sigmoid colon
• Rectum
• LIVER
• PANCREAS
• Gallbladder
• Mesentery
• Anal canal

• LYMPHATIC SYSTEM

Defends the body against pathogens that may harm the body. The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.

• Lymphatic vessel
• Lymph node
• Bone marrow
• Thymus
• Spleen
• Gut-associated lymphoid tissue
• Tonsilsl
• Interstitium

• EXCRETORY-SYSTEM

The system where the kidneys filter blood to produce urine, and get rid of waste.

• kidney
• ureter
• Urinary bladder
• urethra

• Further Information : MALE REPRODUCTIVE SYSTEM
• Further Information : FEMALE REPRODUCTIVE SYSTEM

The reproductive organs required for the production of offspring.

• Internal reproductive organs
• Ovaries
• Fallopian tubes
• Uterus
• Cervix
• Vagina
• External reproductive organs
• Vulva
• Clitoris
• Placenta

Main article: Male reproductive system

• Internal reproductive organs
• Testes
• Epididymis
• Vas deferens
• Seminal vesicles
• Prostate
• Bulbourethral glands
• External reproductive organs
• Penis
• Scrotum

• ENDOCRINE-SYSTEM

Influences the function of the body using hormones.

• Pituitary gland
• Pineal gland
• Thyroid gland
• Parathyroid glands
• Adrenal glands
• Pancreas

• NERVOUS SYSTEM

Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.

• Central network
  • Brain and Mind
    • Cerebrum
      • Cerebral hemispheres
    • Diencephalon
  • The brainstem
    • Midbrain
    • Pons
    • Medulla oblongata
  • Cerebellum
  • The spinal cord
• The ventricular system
• Choroid plexus

See also: List of nerves of the human body

• Nerves
  • Cranial nerves
  • Spinal nerves
• Ganglia
• Enteric nervous system
• Sensory organs
• skin

• MUSCULAR SYSTEM

Enables the body to move using muscles.

• Human skeleton
• Joints
• Ligaments
• Muscular system
• Tendons

• SKELETAL SYSTEM

Bones maintain the structure of the body and its organs.

• Axial skeleton
• Appendicular skeleton

• INTEGUMENTARY-SYSTEM

Skin, hair, nails, sweat and other exocrine glands

• Mammary glands
• Skin
• Subcutaneous tissue