Structural Makeup
Of the four types of fisting, three are focused on the lower fist chute. These types include elementary play, stretch (or width/girth) play, and punch play. While depth play certainly passes through the rectum, its primary focus is the upper fist chute.
In discussing gross anatomy, it is helpful to reduce the lower fist chute into three areas:
- lumen | the actual GI tract composed of smooth muscle tissue.
- bony framework | the portion of the skeletal system that encases the lumen.
- supportive tissue | the muscles and connective tissue (ligaments and tendons) that keep the lumen in place.



Figure 1.2 [ A - C ]: Areas of Focus
[ A ] The lumen (channel) of the lower GI tract. [ B ] The bony framework of the skeletal system. [ C ] The supporting muscles, ligaments, and tendons.
Fisters often use the term fist chute to reference the lumen of the lower GI tract. In this course, Fist Theory™ uses fist chute as an all-inclusive term for the lumen, the bony framework, and the supportive tissues. Fist channel or lumen are used to reference the tubular GI tract.
Vocabulary
Lumen
- Noun the central cavity of a tubular or other hollow structure in an organism.
Gross Anatomy
- Noun the branch of anatomy that deals with the structure of organs and tissues that are visible to the naked eye.
QUICK REFERENCE

Figure 1.1: Segments of the Lower Fist Chute
The lower fist chute, consisting of the anus and rectum, is about one-fifth the size of the upper fist chute.
It is also relevant to discuss organs or organ systems adjacent to the fist chute. For the lower fist chute, this includes the portions of the urinary system (bladder and urethra) and portions of the reproductive system (penis, glands, and ducts).