Reference Points

Anatomists and medical professionals use specific directional terms and reference points to ensure consistency in understanding. The fisting population and the Fist Theory courses typically avoid these terms whenever possible; however, two directional terms and two positional terms are occasionally used for brevity or clarity.

QUICK REFERENCE

Positions, Practices, and Techniques

The terms supine and prone refer to the two most common fisting positions for bottoms: face up (on his back) or face down (on his knees).

VOCABULARY

Supine

Adjective (of a person) lying face upward or on his back.

Prone

Adjective (of a person) lying face downward or on his stomach; in fisting, typically face downward on knees.

Bottom in Supine Position — Figure 1.2: Supine Position

Fisting in a sling or lying on one's back are examples of the *supine* position. Bottom: @sandiegofist.

The directional terms medial and lateral indicate the general location of a hand inside the deeper regions of fist chute.

Lateral Position of Hand — Figure 1.3: Lateral Direction

Directing the hand away from the center of the body toward the bottom’s side demonstrates the lateral direction.

Hand in Medial Direction — Figure 1.4: Medial Direction

Directing the hand toward the center of the body instead of the side demonstrates the medial direction.

VOCABULARY

Lateral

Adjective situated on one side or other of the body or of an organ, especially in the region furthest from the center of the body.

Medial

Adjective situated near the center of the body or the midline of an organ.

Body Systems

Anatomical courses discuss components of the fist chute according to their composite body systems and relevant neighboring organs:

Body Systems Table

System	Components
Digestive	Organs of the GI tract (responsible for absorption and excretion) including the dual-purpose sexual organs: anal canal, rectum, and colon.
Muscle	Muscles and tendons responsible for movement and body maintenance, specifically muscles of the arms, wrists, hands and the muscles surrounding the fist chute.
Skeletal	Bones and ligaments responsible for structure and alignment that facilitate manual penetration.
Integumentary	Skin that is exposed externally to the environment and internally along the GI and respiratory tracts. Also includes tissues relevant to the fist chute.
Reproductive	Organs related to sexual function and pleasure encountered during fisting, specifically the prostate.
Nervous	Voluntary (somatic) and involuntary (autonomic) nervous systems that affect the ability to give and take a hand.

Table 2.1: Major Body Systems of the Fist Chute

Organs and tissues of several body systems are stimulated or manipulated during fisting and if managed correctly, can provide immense pleasure. If managed incorrectly, they will be a source of discomfort.

In addition to the major systems, some Fist Theory courses reference or address the other body systems:

System	Components
Urinary	Organs of the urinary tract and associated physiological functions, including those encountered and affected while fisting (urethra, bladder, and kidneys).
Respiratory	Organs of the respiratory tract and associated physiological functions, including vocal cords, lungs, and nasal and oral cavities.
Cardiovascular	The circulatory system and associated physiological functions, including vascular responses to inhalants and anal penetration.
Endocrine	Glands and hormones that affect disposition and physiological functions.
Immune	Cells, tissues, organs and physiological processes that prevent illness and infection.

Table 2.2: Related Body Systems

While these systems have limited or no physical presence in the fist chute, they can affect the overall fisting experience.

Scientific Vocabulary

The following anatomical terms may be used to discuss the fist chute, physiological processes, and fisting practices. Use the Quick Reference for more colloquial fisting terms and jargon.

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Vocabulary (Jargon/Vernacular)

Index of Terms

Definitions

Abdomen / Abdominal

Noun

Adjective

the part of the body between the thorax and the pelvis.
of or pertaining to the abdomen.

Ascending Colon

Noun

the part of the large intestine that extends from the cecum to the bend on the right side below the liver; not typically included in the fist chute.

Anal Canal

Noun

the terminal section of the rectum; beginning of the fist chute.

Anal Columns

Noun

a number of vertical folds, produced by an enfolding of the mucous membrane and some of the muscular tissue in the upper half of the anal canal.
Synonym: Columns of Morgagni

Anus / Anal

Noun

Adjective

the posterior opening of the digestive tract.
of or pertaining to the anus.

Baroreceptor

Noun

sensory nerve endings in the walls of large arteries that monitor internal changes in blood pressure.
in fisting, pressure receptors in the walls of rectum and colon that are sensitive to distension.

Bowel(s)

Noun

one of the divisions of the intestines—usually used in plural except in medical use.
the interior parts.

Bowel Movement (BM)

Noun

an act of passing waste through the rectum and anal canal.

Colon

Noun

the part of the large intestine that extends from the small intestine to the rectum.

Chemoreceptor

Noun

sensory nerve endings—such as a taste buds—that responds to chemical stimuli, including water or fluid.
in fisting, receptors in the walls of the rectum and large intestine that responds to fluids.

Chyme

Noun

the semifluid mass of partly digested food expelled by the stomach into the small intestine which is then expelled into the large intestine.

Colic Flexure(s)

Noun

curvatures at lateral ends of the transverse colon.

Descending Colon

Noun

the part of the large intestine on the left side of the body that extends from the bend below the spleen to the sigmoid colon.

Epithelium / Epithelial

Noun

Adjective

a membranous cellular tissue that covers a free surface or lines a tube or cavity of an animal body and serves especially to enclose and protect the other parts of the body, to produce secretions and excretions, and to function in assimilation
of or pertaining to the epithelium.

Feces / Fecal

Noun

Adjective

bodily waste discharged through the anus.
of or pertaining to feces.

Fissure

Noun

small tear or crack in the inner lining of the anus.

Haustra / Haustral

Noun

Adjective

one of the pouches or sacculations into which the large intestine is divided.
of or pertaining to haustrum.

Hemorrhoid

Noun

an abnormal mass of dilated and engorged blood vessels in swollen tissue that occurs internally in the anal canal or externally around the anus, that may be marked by bleeding, pain, or itching, and that when occurring internally often protrude through the outer sphincter of the anus and when occurring externally may lead to thrombosis.
Synonym: Piles

Hepatic Flexure

Noun

the curvature between the transverse and ascending colon, near the liver, on the individual's right side.
Synonym: Right Colic Flexure

Houston Folds

Noun

semi-lunar transverse folds of the rectal wall.

Intestine(s)

Noun

the tubular part of the digestive tract that extends from the stomach to the anus, subdivided into large and small segments.

Intraperitoneal

Adjective

existing within or administered by dictionary_entry into the peritoneum (lined abdominal cavity).

Lumen

Noun

the cavity or hollow portion of a tubular organ or part.

Mesentery

Noun

one or more membranes that consist of a double fold of the peritoneum and invest the intestines and their appendages and connect them with the rear wall of the abdominal cavity.

Mucosal Membranes / Mucosa

Noun

a membrane that lines the anal canal (and various cavities in the body) and covers the surface of internal organs, consisting of one or more layers of epithelial cells overlying a layer of loose connective tissue.

Mucous

Noun

a thick, protective fluid secreted by mucous glands in some mucosal membranes.

Neuron / Neural

Noun

Adjective

a grayish or reddish granular cell that is the fundamental functional unit of nervous tissue transmitting and receiving nerve impulses and having cytoplasmic processes which are highly differentiated frequently as multiple dendrites or usually as solitary axons which conduct impulses to and away from the cell body.
of or pertaining to a neuron.
Synonym: Nerve Cell

Olecranon Process

Noun

the bony protrusion at the elbow joint.

Omentum

Noun

a fold of peritoneum connecting or supporting abdominal structures such as the stomach and liver.

Peristalsis

Noun

successive waves of involuntary contraction passing along the walls of a hollow muscular structure (such as the esophagus or intestine) and forcing the contents onward.

Peritoneum / Peritoneal

Noun

Adjective

the smooth transparent serous membrane that lines the cavity of the abdomen of a mammal and is folded inward over the abdominal and pelvic viscera.

Perforation

Noun

an accidental intestinal hole made by or as if by piercing or boring.

Piles

Noun

See Hemorrhoid

Rectum / Rectal

Noun

Adjective

the terminal part of the intestine from the sigmoid colon to the anal canal.
of or pertaining to the rectum.

Retroperitoneal

Adjective

situated behind the abdominal (enclosed peritoneal) cavity.

Sigmoid Colon

Noun

the part of the large intestine the that connects the descending colon to the rectum.

Sphincter

Noun

an annular muscle surrounding and able to contract or close a lumen or bodily opening.

Splenic Flexure

Noun

the curvature between the transverse and descending colon, near the spleen, on the individual's left side.
Synonym: Left Colic Flexure

Squamous

Adjective

covered or consisting of scales.
of, relating to, or being a stratified epithelium that consists at least in its outer layers of small scalelike cells.

Tear

Noun

See Fissure

Tenesmus

Noun

The post-session urge to defecate without being able to do so. Causes typically include trapped air, fisting santorum, or tissue inflammation of the fist chute due to fisting. Irritated nerves overreact, telling your muscles and brain that you constantly have to go.

Transverse Colon