Ciliary Movement
Movement facilitated by cilia, observed in internal tubular organs like the trachea and fallopian tubes.
What is Ciliary Movement?
Short, hair-like, motile appendages found on the surface of eukaryotic cells, composed of microtubules in a 9+2 arrangement, responsible for movement.
Key points
- Define ciliary movement.
- Identify the structures involved (cilia, basal bodies).
- Explain the mechanism of coordinated beating.
- Describe the locations and functions of ciliary movement in the human body.
Common exam trap
Confusing cilia with flagella (longer, fewer in number, different beating pattern).
Definitions
- Term
Cilia
- Meaning
Short, hair-like, motile appendages found on the surface of eukaryotic cells, composed of microtubules in a 9+2 arrangement, responsible for movement.
- Term
Ciliary Movement
- Meaning
A type of locomotion or movement generated by the coordinated beating of cilia, used to propel cells or move substances along a surface.
- Term
Basal Body
- Meaning
A cylindrical organelle, structurally similar to a centriole, found at the base of cilia and flagella, involved in their formation and anchoring.
- Term
Microtubules
- Meaning
Hollow cylindrical structures found in the cytoplasm of eukaryotic cells, composed of the protein tubulin, forming part of the cytoskeleton and the internal structure of cilia and flagella.
Learning objectives
Define ciliary movement.
Identify the structures involved (cilia, basal bodies).
Explain the mechanism of coordinated beating.
Describe the locations and functions of ciliary movement in the human body.
Differentiate ciliary movement from other types of movement.
Prerequisites
Cell structure and organelles (especially microtubules).
Basic understanding of locomotion and movement in living organisms.
Knowledge of human respiratory and reproductive systems.
Common mistakes
Confusing cilia with flagella (longer, fewer in number, different beating pattern).
Not understanding the role of coordinated beating.
Overlooking the energy requirement (ATP).
Mistaking it for amoeboid movement.
Keywords
Cilia
Ciliary movement
Locomotion
Movement
Microtubules
Trachea
Fallopian tubes
ATP
9+2 arrangement
Practice preview
A genetic disorder leading to defective dynein arms in cilia would most directly impair which of the following physiological processes?…
hard
What is the primary function of ciliary movement in the human body?…
easy
Ciliary movement is facilitated by which of the following cellular structures, primarily composed of tubulin protein?…
easy