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Research draft

smooth muscle tissue

vr.tr.smooth-muscle-tissue · PHY.LIV

Let an agent explain smooth muscle as a tissue type, where it occurs and how it is controlled, distinguish it from skeletal and cardiac muscle, relay anatomical and physiological facts from reference sources, and route clinical questions to clinicians.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain smooth muscle as a tissue type, where it occurs and how it is controlled, distinguish it from skeletal and cardiac muscle, relay anatomical and physiological facts from reference sources, and route clinical questions to clinicians.

Involuntary, non-striated muscle tissue found in the walls of hollow organs and vessels, including the gut, airways, bladder, uterus, blood vessels and the arrector pili of the skin; its spindle-shaped cells contract slowly and sustainably under autonomic, hormonal and local control to move contents, regulate diameter and maintain tone.

What it is for: Movement and tone of hollow organs and vessels.

It can be explain structure and function; list where smooth muscle occurs; distinguish it from other muscle types; relay relevant physiology and pharmacology in general terms.

Distinguishing features

No striations

Involuntary autonomic control

Slow, sustained, energy-efficient contraction

Single-unit and multi-unit types

What it looks like

Not visible to the eye; under the microscope, sheets of spindle-shaped cells with a single central nucleus and no striations.

Physical character

cell length: about 20-500 micrometres - varies by organ and state

contraction: slow and sustained qualitative - compared with skeletal muscle

How it is recognised

Non-striated spindle cells with one nucleus

In walls of hollow organs and vessels

Skeletal muscle is striated and voluntary; cardiac muscle is striated and branched

Related models

is a kind of - one of three types

muscle tissue

is contrasted with - striated and voluntary

skeletal muscle

is controlled by - involuntary control

autonomic nervous system

is part of - a major location

blood vessel

In practice

Families and kinds

vascular smooth muscle

visceral smooth muscle of the gut, bladder and uterus

airway smooth muscle

arrector pili and eye muscles such as the iris

single-unit and multi-unit smooth muscle

Identifiers

UBERON 0001135 smooth muscle tissue

FMA 14070 Foundational Model of Anatomy

Standards and regulation

Anatomical terminology standards such as Terminologia Histologica

Failure modes and hazards

Spasm and dysmotility disorders

Vascular smooth muscle in hypertension and atherosclerosis

Agents giving clinical advice

Also called

Airway smooth musclearrector pili muscledetrusor urinae musclemuscularis mucosaemuscle layer of ejaculatory ductinferior tarsal musclesmooth muscle of arterysmooth muscle of esophagussmooth muscle tissue of prostatesmooth muscle tissue of ovarian medullamuscle layer in fatty layer of subcutaneous tissueSmooth muscle tissue of bronchioleSmooth muscle of tracheaSmooth muscle of interlobular duct of pancreasSmooth muscle tissue of circular muscle layer of duodenumSmooth muscle tissue of longitudinal muscle layer of duodenumSmooth muscle tissue of longitudinal muscle layer of descending colonSmooth muscle tissue of circular muscle layer of descending colonSmooth muscle tissue of renal pelvisSmooth muscle tissue of tunica media of arterySmooth muscle tissue of tunica media of lymphatic vesselvascular smooth musclemuscularis mucosae of stomachmuscularis mucosae of small intestinemuscularis mucosae of duodenummuscularis mucosae of large intestinemuscularis mucosae of appendixmuscularis mucosae of esophagusinner circular layer of muscularis mucosae of stomachouter longitudinal layer of muscularis mucosae of stomachmuscularis mucosae of segment of esophagusmuscularis mucosae of zone of stomachmuscularis mucosae of zone of small intestinemuscularis mucosae of segment of large intestine

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Structure What smooth muscle is.

Histology.

Cells

Cell structure.

Cells

Cells.

  1. What is the structure of smooth muscle cells and tissue, and how do they differ from other muscle types? definition
  2. Is the question about smooth, skeletal or cardiac muscle? boundary

Location

Where it occurs.

Location

Location.

  1. In which organs and vessels is smooth muscle found, and in what arrangement? definition
  2. Which entry fits the specific organ? action
Function How it works.

Physiology.

Contraction

Contraction mechanism.

Contraction

Contraction.

  1. How does smooth muscle contract, and how is it controlled by nerves, hormones and local factors? definition
  2. Which entry fits muscle contraction generally? action

Roles

Physiological roles.

Roles

Roles.

  1. What roles does smooth muscle play in circulation, digestion, breathing and reproduction? provenance
  2. Which references are standard? provenance
Clinical Disease and drugs.

General terms only.

Disease

Disorders.

Disease

Disease.

  1. Which disorders involve smooth muscle, in general terms? provenance
  2. Is the user asking about their own condition, which needs a clinician? boundary

Pharmacology

Drugs acting on it.

Pharmacology

Pharmacology.

  1. Which classes of drugs act on smooth muscle, in general terms? provenance
  2. Which entry fits pharmacology? action
Study Research and teaching.

Study.

Research

Research.

Research

Research.

  1. How is smooth muscle studied, and what research questions are open? provenance
  2. How is contraction measured? measurement

Teach

Teaching.

Teach

Teaching.

  1. How is smooth muscle taught in histology and physiology? action
  2. Which misconceptions arise? provenance

What the second pass must settle

  • Should vascular and visceral smooth muscle be separate entries?
  • How should anatomy ontologies be linked?
  • The registry entry has merged aliases naming specific muscles; should they be split off?
Draft as JSON