Sphincter Notes: Definitions & Explanations PDF | Download eBooks
Study Sphincter lecture notes PDF with biology definitions and explanation to study What is Sphincter?. Study sphincter explanation with biology terms to review biology course for online degree programs.
Sphincter Definition:
At some of the junctions between specialized compartments, the muscular layer forms ring like valves called sphincters. Sphincters regulate the passage of material between compartment.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Sphincter Notes:
A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals. There are over 60 types in the human body, some microscopically small, in particular the millions of precapillary sphincters. Sphincters relax at death, often releasing fluids and feces. Sphincters control the passage of liquids and solids. This is evident, for example, in the blowholes of numerous marine mammals.
Keep Learning with Biology Notes
What is Dermal tissue system?
The dermal tissue is the plants protective layer. Like our skin, it forms the first line of defense against physical ...
What is Host?
Host is the usually the larger organism in the symbiosis and provides food and nourishment to the smaller organism. For ...
What are Recombinant chromosomes?
Recombinant chromosomes are formed when there is shuffling of genetic material between the homologous chromosomes. This would normally happen when ...
What are Mixotrophs?
A mixotroph is an organism that can use a mix of different sources of energy and carbon, instead of having ...
What is Glia?
Glia, also called glial cells or neuroglia, are non-neuronal cells in the central nervous system and the peripheral nervous system. ...
What is Dendrochronology?
Dendrochronology is basically a tree-ring dating. It is the scientific method of dating tree rings, which are also called growth ...
