There are 8 Jungian Cognitive Functions that make up Myers Briggs personalities. We have broken each down in depth:

Introverted Functions

Introverted Feeling (Fi)

Introverted Thinking (Ti)

Introverted Intuition (Ni)

Introverted Sensing (Si)

Extraverted Functions

Extraverted Feeling (Fe)

Extraverted Thinking (Te)

Extraverted Intuition (Ne)

Extraverted Sensing (Se)