Search results
Results from the WOW.Com Content Network
The cilium (pl.: cilia; from Latin cilium 'eyelid'; in Medieval Latin and in anatomy, cilium) is a short hair-like membrane protrusion from many types of eukaryotic cell. [1] [2] (Cilia are absent in bacteria and archaea.) The cilium has the shape of a slender threadlike projection that extends from the surface of the much larger cell body. [2]
The body and oral kinetids make up the infraciliature, an organization unique to the ciliates and important in their classification, and include various fibrils and microtubules involved in coordinating the cilia. In some forms there are also body polykinetids, for instance, among the spirotrichs where they generally form bristles called cirri.
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] Primary cilia contain nine doublet microtubules arranged as a cylinder in their axenome and are denoted as a 9+0 ...
It also improves the function of the tiny hair-like structures (cilia) in your respiratory system that help clear mucus and strengthens your respiratory epithelial barrier, which protects the body ...
Trigger the blink reflex in the case of a foreign body approaching the eye and touching the lashes Regulate or reduce evaporation of the tear film on the cornea [ 5 ] Protect the conjunctivae from excessive light and ultraviolet radiation, by forming a filamentous curtain-like structure through their arrangement in multiple imperfect rows [ 6 ...
It is present in the lining of the fallopian tubes, where currents generated by the cilia propel the egg cell toward the uterus. Ciliated columnar epithelium forms the neuroepithelium of the ependyma that lines the ventricles of the brain and central canal of the spinal cord. These cilia move the cerebro-spinal fluid (CSF).
A typical example of a ciliated microorganism is the Paramecium, a one-celled, ciliated protozoan covered by thousands of cilia. The cilia beating together allow the Paramecium to propel through the water at speeds of 500 micrometers per second. [23]
Common mechanisms of motion include flagella and cilia. In multicellular organisms, cells can move during processes such as wound healing, the immune response and cancer metastasis. For example, in wound healing in animals, white blood cells move to the wound site to kill the microorganisms that cause infection.