List and describe the functions of microtubules, actinfilaments, and intermediate filaments
List and describe the functions of microtubules, actinfilaments, and intermediate filaments
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Question
List and describe the functions of microtubules, actin
filaments, and intermediate filaments
Expert Solution
Step 1
The cytoskeleton is a system of filaments and tubules that runs across the cytoplasm, which is all of the material inside a cell except the nucleus, which spreads across the cell. It can be present in all cells, but the proteins that make it up differ depending on the organism.
Step 2
Microtubules:
- Structural support & cell movement
- Move chromosomes during cell division
- It tracks that guide motor proteins carrying organelles to their destination
- It contains motor proteins: myosin & dynein that helps in motility.
Actin Filament:
They form a network that provides mechanical support, defines cell structure, and enables cell surface mobility, allowing cells to migrate, swallow particles, and divide in mitosis.
Intermediate filament
- It provides a deformable three-dimensional structural structure for the cell.
- Strengthen the cell's form and correct the organelle's position.
- A network of intermediate filaments supports the nuclear envelope.
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