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Which of the following is not a function of cilia of simple ciliated epithelium
It helps to move the egg towards the uterus
It helps to push mucus away from the pharynx
It keeps the urine moving
Cilia helps to maintain the circulation of cerebrospinal fluid
Answers (1)
Simple Ciliated Epithelium:
Structure
- The cells of ciliated epithelium bear numerous hair-like outgrowths called cilia. These arise from basal granules.
- In ciliated epithelium, mucus containing goblet cells are also found.
- The cilia undergo rhythmic contractions and create a current to transport material.
Ciliated epithelium is of two types :
(a). Ciliated columnar epithelium- This epithelium consists of cilia containing column-like cells.
(b). Ciliated cuboidal epithelium- It consists of cube-like cells having cilia on their free surfaces.
Location:
- Ciliated columnar epithelium lines respiratory tract, fallopian tubes, ventricles of the brain, central canal of the spinal cord, tympanic cavity of the middle ear and auditory tube (Eustachian tube).
- Ciliated cuboidal epithelium occurs in certain parts of nephrons of the kidney.
Functions:
- The major function of the cilia of epithelium is to cause ciliary movements. These movements maintain a flow of mucus or liquid constantly in one direction.
- In oviduct, cilia help to move an egg towards the uterus
- In the respiratory tract, cilia help to push mucus towards the pharynx
- In the nephrons, cilia keep the urine moving
- Cilia of ventricles of the brain and central canal of the spinal cord helps to maintain the circulation of cerebrospinal fluid.
- Stratified ciliated columnar epithelium
- The outer layer consists of ciliated columnar cells while the basal layer possesses columnar cells.
- It covers larynx and upper part of the soft palate.
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In oviduct, cilia helps to move an egg towards the uterus. In respiratory tract cilia helps to push mucus towards the pharynx. In the nephrons cilia keep the urine moving. Cilia of ventricles of the brain and central canal of the spinal cord helps to maintain the circulation of cerebrospinal fluid.
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