There are 78 organs in the human body.It is difficult to give the right answer. There are 13 major organ systems in human body. The organs work together systematically to keep you alive and active and each plays a specific role related to your health and development. By definition, an organ is a structure that comprises at least two kinds of tissue that function together for a common purpose. Some of the most important organs in the human body are the skin, liver, heart and lungs.
Regional groups

    Head and neck – includes everything above the thoracic inlet.
    Upper limb – includes the hand, wrist, forearm, elbow, arm, and shoulder.
    Thorax – the region of the chest from the thoracic inlet to the thoracic diaphragm.
    Human abdomen to the pelvic brim or to the pelvic inlet.
    The back – the spine and its components, the vertebrae, sacrum, coccyx, and intervertebral disks.
    Pelvis and Perineum – the pelvis consists of everything from the pelvic inlet to the pelvic diaphragm. The perineum is the region between the sex organs and the anus.
    Lower limb – everything below the inguinal ligament, including the hip, the thigh, the knee, the leg, the ankle, and the foot.

Internal organs (by region)

Head and neck

    Brain
        Amygdala
        Basal ganglia
        Brain stem
            medulla
            midbrain
            pons
        Cerebellum
        Cerebral cortex
        Hypothalamus
        Limbic system

    Eye
    Pituitary
    Thyroid and Parathyroids

Thorax

    Heart
    Lung
    Esophagus
    Thymus
    Pleura

Abdomen and pelvis (both sexes)

    Adrenals
    Appendix
    Bladder
    Gallbladder
    Large intestine
    Small intestine
    Kidney
    Liver
    Pancreas
    Spleen
    Stomach

Male pelvis

    Prostate
    Testes

Female pelvis

    Ovaries
    Uterus

Human organs