Biomaterial Database

Muscle chamber with strain gauge adapted for isotonic/isometric recording. 1996

D M Easton

Department of Biological Science, Florida State University, Tallabassee 32306-3050, USA.

Simple devices are described that can facilitate student experiments on mechanical and electrical aspects of muscle contraction, for example, of isolated preparations such as frog gastrocnemius and sartorius muscles and gut. The system includes a general-purpose preparation bath that was previously described for electrophysiological observations with suction electrodes [D.M. Easton. Am.J. Physiol. 265 (Adv. Physiol.Educ. 10): S35-S46, 1993]. A tower installed in the bath allows the muscle to be oriented vertically but completely submerged in a limited volume. Recording of isotonic contraction, which is the more familiar behavior of skeletal muscle, is made convenient by an accessory to convert the commonly available Statham force transducer to isometric recording. Phenomena not conveniently accessible by isometric recording, such as muscle work, and also the length-tension relation, not ordinarily observed for isotonic contraction, can be demonstrated.

UI	MeSH Term	Description	Entries
D007537	Isometric Contraction	Muscular contractions characterized by increase in tension without change in length.	Contraction, Isometric,Contractions, Isometric,Isometric Contractions
D007551	Isotonic Contraction	Muscle contraction with negligible change in the force of contraction but shortening of the distance between the origin and insertion.	Contraction, Isotonic,Contractions, Isotonic,Isotonic Contractions
D007866	Leg	The inferior part of the lower extremity between the KNEE and the ANKLE.	Legs
D009132	Muscles	Contractile tissue that produces movement in animals.	Muscle Tissue,Muscle,Muscle Tissues,Tissue, Muscle,Tissues, Muscle
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D004594	Electrophysiology	The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia