Undulating membrane Definition and Examples

Definition
noun
A sinuous extension of the cytoplasmic membrane performing a vigorous, wavelike, and reversible movements
Supplement
Undulating membrane is found in the following organisms:

In some parasitic flagellates such as trypanosomes and trichomonads, undulating membrane is a fin-like extension usually associated with the flagellum. The presence of undulating membrane enhances motility of the parasite in a viscous fluid, such as blood. (Minchin 2003)
In some ciliates such as Tetrahymena, an undulating membrane is made up of a row of fused cilia and assumed to aid in capturing food. (Minchin 2003)
In spermatozoon of some animals such as some sarcopterygian fish and toads (Bufo marinus). ( Birkhead and others 2009)

Also called:

undulatory membrane

Reference(s):

Birkhead TR, Hosken, DJ, Pitnick, S. 2009. Sperm biology an evolutionary perspective. Amsterdam: Elsevier/Academic Press, p.112-113.
Minchin E. 2003. Protozoa microbiology & guide to microscopic identification. Palm Springs (CA): Wexford College Press, p. 55-56.

Plant Tissues

Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

Genetics – Lesson Outline & Worksheets

Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

The Conscious & Unconscious Nervous System

This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

Human Reproduction and Fertilization

For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..

Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

Plant Cells vs. Animal Cells

Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..

Undulating membrane

You will also like...