Search results
Results from the WOW.Com Content Network
Most ciliates also have one or more prominent contractile vacuoles, which collect water and expel it from the cell to maintain osmotic pressure, or in some function to maintain ionic balance. In some genera, such as Paramecium , these have a distinctive star shape, with each point being a collecting tube.
The oral cilia contain the adoral zone of membranelles (AZM), which are compound ciliary organelles. The paroral membrane consists of a row of paired cilia. The cytostome has the AZM on one side and the paroral membrane on the other side. [1] As adults, they do not have somatic cilia. [8] In terms of reproduction, Vorticella can undergo binary ...
The cluster of cells secretes different factors which form an extracellular matrix. Cilia in the respiratory system is known to move mucus and pathogens out of the airways. It has been found that patients with biofilm positive infections have impaired cilia function. The impairment may present as decreased motion or reduction in the number of ...
The stigma is made of tens to several hundreds of lipid globules, which often form hexagonal arrays and can be arranged in one or more rows. The lipid globules contain a complex mixture of carotenoid pigments, which provide the screening function and the orange-red colour, [60] as well as proteins that stabilize the globules. [61]
The ciliated part of the simple columnar epithelium has tiny hairs which help move mucus and other substances up the respiratory tract. The shape of the simple columnar epithelium cells are tall and narrow giving a column like appearance. the apical surfaces of the tissue face the lumen of organs while the basal side faces the basement membrane ...
Zoothamnium is a sessile peritrich, meaning it is a ciliated vase shaped protozoan that is nonmotile in nature. The genus comprises more than seventy species. Differentiation between species can often be difficult due to the strong similarities in form and function. [2] The most commonly cited species are as follows: [3]
Cilia are arranged in 50-63 longitudinal rows. At the center of the cell is a large, ovoid macronucleus and a small spherical micronucleus. A single contractile vacuole is located slightly posterior to the middle of the body, near the right side. [4] Like many ciliates, it is a heterotrophic bacterivore that ingests bacteria through an oral groove.
Cilia Structure. Primary cilia are found to be formed when a cell exits the cell cycle. [2] Cilia consist of four main compartments: the basal body at the base, the transition zone, the axenome which is an arrangement of nine doublet microtubules and considered to be the core of the cilium, and the ciliary membrane. [2]