motile

Examples of motile in the following topics:

• Bacteroides and Flavobacterium

  • Bacteroides and Flavobacterium are both Gram-negative bacteria that can be either motile or non-motile.
  • Flavobacterium can be either non-motile or motile and are rod-shaped.

• Gastrointestinal Reflex Pathways

  • In turn, this inhibits gastric motility and secretion of gastric acid (HCl).
  • Enterogastric reflex activation causes decreased motility.
  • The gastrocolic reflex is the physiological reflex controlling the motility, or peristalsis, of the gastrointestinal tract.
  • It involves an increase in motility of the colon in response to stretch in the stomach and byproducts of digestion in the small intestine.
  • The small intestine also shows a similar motility response.

• Cell Structure, Metabolism, and Motility

  • Protists are an incredibly diverse set of eukaryotes of various sizes, cell structures, metabolisms, and methods of motility.
  • The majority of protists are motile, but different types of protists have evolved varied modes of movement .
  • Describe the metabolism and structure of protists, explaining the structures that provide their motility

• Sperm

  • In animals, most of the energy (ATP) for sperm motility is derived from the metabolism of fructose carried in the seminal fluid.
  • Motile sperm cells typically move via flagella and require a water medium in order to swim toward the egg for fertilization.These cells cannot swim backwards due to the nature of their propulsion.
  • The genetic quality of sperm, as well as its volume and motility, all typically decrease with age.

• Morphologically Unusual Proteobacteria

  • One daughter is a mobile "swarmer" cell that has a single flagellum at one cell pole that provides swimming motility for chemotaxis.
  • Swarmer cells differentiate into stalked cells after a short period of motility.
  • One daughter is a mobile "swarmer" cell that has a single flagellum at one cell pole that provides swimming motility for chemotaxis.
  • Swarmer cells differentiate into stalked cells after a short period of motility.

• Listeriosis

  • Listeriosis is a bacterial infection caused by a Gram-positive, motile bacterium called Listeria monocytogenes.
  • Listeriosis is a bacterial infection caused by a Gram-positive , motile bacterium, Listeria monocytogenes.
  • A bacterial infection caused by a Gram-positive, motile bacterium, Listeria monocytogenes which is shown here on a blood agar plate.

• Pili and Pilus Assembly

  • Some pili, called "type IV pili," generate motile forces.
  • Movement produced by type IV pili is typically jerky, and so it is called "twitching motility," as distinct from other forms of bacterial motility, such as motility produced by flagella.
  • However, some bacteria, for example Myxococcus xanthus, exhibit gliding motility.

• Noncholera Vibrios

  • The name Vibrio derives from Filippo Pacini who isolated microorganisms he called "vibrions" from cholera patients in 1854, because of their motility.
  • All members of the genus are motile and have polar flagella with sheaths.

• Spermatogenesis

  • The non-motile spermatozoa are transported to the epididymis in testicular fluid secreted by the Sertoli cells with the aid of peristaltic contraction.
  • While in the epididymis, the spermatozoa gain motility and become capable of fertilization.
  • However, transport of the mature spermatozoa through the remainder of the male reproductive system is achieved via muscle contraction rather than the spermatozoon's recently acquired motility.
  • The resulting spermatozoa are now mature but lack motility, rendering them sterile.

• Aerobic Hydrocarbon Oxidation

  • In some bacterial species such as Pseudomonas aeruginosa, biosurfactants are also involved in a group motility behavior called swarming motility.