Cell specialisation - specialised cells Flashcards
(11 cards)
Why is it crucial to maximise surface area to volume ratio in cells?
To facilitate the movement of substances across the membrane
What happens to the rate of substance movement as the surface area to volume ratio increases?
The rate of substance movement increases
What is the primary function of a red blood cell (erythrocyte)?
To deliver oxygen from the lungs to respiring cells
What shape do red blood cells have to maximise surface area?
Flattened and biconcave shape
How does the shape of red blood cells affect oxygen diffusion?
It allows oxygen to diffuse into the red blood cell more quickly in the lungs and out again at the respiring tissues
What are proximal convoluted tubule cells responsible for?
Reabsorption of vital substances from glomerular filtrate
What adaptations do proximal convoluted tubule cells have to maximise surface area?
Microvilli and invaginations
Where are microvilli located in proximal convoluted tubule cells?
In the apical membrane
What are invaginations in the context of proximal convoluted tubule cells?
Infoldings found in the basal membrane
Fill in the blank: The larger the surface area compared to the volume of the cell, the _______.
faster the rate of substance movement
True or False: The primary role of red blood cells is to remove carbon dioxide from the body.
False
