Smooth Muscle Histology
Introduction
This page describes smooth muscle histology. Development of smooth muscle, skeletal muscle and cardiac muscle can be found in other notes.
Smooth muscle is mesoderm in origin and contributes to many different tissues including the muscular wall of the gastrointestinal tract, artery walls, bladder wall, uterus, seminiferous tubules and ductus deferens.
- Smooth Muscle Histology: Labeled Colon low | Labeled Colon high | Colon x40 | Colon x40 | Ileum x10 | Oesophagus x10 | Seminiferous tubule x40 | Uterus myometrium x10 | Uterus myometrium x40 |
| Fibre Type | Type I fibres | Type II a fibres | Type II x fibres | Type II b fibres |
|---|---|---|---|---|
| Contraction time | Slow | Moderately Fast | Fast | Very fast |
| Size of motor neuron | Small | Medium | Large | Very large |
| Resistance to fatigue | High | Fairly high | Intermediate | Low |
| Activity Used for | Aerobic | Long-term anaerobic | Short-term anaerobic | Short-term anaerobic |
| Maximum duration of use | Hours | <30 minutes | <5 minutes | <1 minute |
| Power produced | Low | Medium | High | Very high |
| Mitochondrial density | High | High | Medium | Low |
| Capillary density | High | Intermediate | Low | Low |
| Oxidative capacity | High | High | Intermediate | Low |
| Glycolytic capacity | Low | High | High | High |
| Major storage fuel | Triglycerides | Creatine phosphate, glycogen | Creatine phosphate, glycogen | Creatine phosphate, glycogen |
| Myosin heavy chain, human genes |
MYH7 | MYH2 | MYH1 | MYH4 |
Histology Images
- Muscle Histology: Muscle Development | Human HE x4 longitudinal and transverse | Human HE x40 transverse | Human HE x40 longitudinal | Human HE x40 longitudinal | Human HE x4 longitudinal and transverse | Muscle Spindle HE x40 | Human HE x40 | Human HE x40 | Human HE x40 | Human HE x100 | Human HE x100 | Fetal human muscle | Myotendinous junction label | Myotendinous junction HE x40 | Whipf 1 | Whipf 2 | Whipf 3 | Tongue HE x10 transverse | Tongue x100 | Muscle spindle HE x20 | Muscle spindle HE x40
Human HE x4 longitudinal and transverse
Human HE x40 transverse
Human HE x40 longitudinal
Human HE x40 longitudinal
Human HE x4 longitudinal and transverse
Muscle Spindle HE x40
Human HE x40
Human HE x40
Human HE x40
Human HE x100
Human HE x100
Fetal human muscle
Myotendinous junction HE x40
Muscle spindle HE x20
Muscle spindle HE x40
References
Search PubMed
June 2010 " Skeletal Muscle Development" All (19316) Review (2515) Free Full Text (5587) Manage Filters Search Pubmed: Smooth Muscle Development
Additional Images
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Cite this page: Hill, M.A. (2024, April 20) Embryology Smooth Muscle Histology. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Smooth_Muscle_Histology
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
