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Which term does not belong polarity basement membrane regeneration possible vascular cell to cell junctions?
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Why does the polarity of a cell membrane reverse during an action potential?
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
What are 6 special characteristics of epithelium?
1. Cellularity: composed entirely of cells 2. Polarity: Apical vs. Basal Surface 3. Specialized Contacts: special cell junctions (Tight, Gap and Desmosomes) 4. Avascular but Innervated: contains NO blood vessels but has nerve endings 5. Regeneration: high regenerative capacity 6. Deep in Epithelia, there's always Connective Tissue
What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
What is membrane polarity?
-70 mV this potential difference in a resting neuron (Vr) is called the resting membrane potential, and the membrane is said to be polarized.
What is the significance of polarity?
it forms the basement of development or ontogeny of plants and animals every organ of the body is to formed by which cell during embryogenesis was desided
What are the characteristics of epithelia tissue?
Epithelia tissues consists of closely-packed cells arranged in one or more flat sheets. Their apical surface is exposed to the external environmental while their basal surface is attached to the tissue beneath it. The connective tissues link the epithelial cells to other structures. Nutrients travel to the epithelia tissues via diffusion through the capillaries.
Which of the following factors does not affect membrane permeability?
The polarity of membrane phospholipids -Mastering Biology
What is a factor that determines of a molecule can cross a cell membrane?
Polarity
How is the cell membrane selectively permeable?
The pores of the cell membrane only allow objects of a certain size or polarity through. The lipids that make up the membrane have a certain polarity at the head and tail and only certain objects are allowed through because of this.
Which is a factor that determines wether a molecule can cross the cell membrane?
Polarity
Why does the polarity of a cell membrane reverse during an action potential?
During an action potential the neuron receives a stimulus causing the cell membrane to become more permeable to sodium than potassium, calling the polarity to change.
What is a factor that determines whether a molecule cross a cell membrane?
size/ polarity can be the factors
What are 6 special characteristics of epithelium?
1. Cellularity: composed entirely of cells 2. Polarity: Apical vs. Basal Surface 3. Specialized Contacts: special cell junctions (Tight, Gap and Desmosomes) 4. Avascular but Innervated: contains NO blood vessels but has nerve endings 5. Regeneration: high regenerative capacity 6. Deep in Epithelia, there's always Connective Tissue
What is a factor that determines whether molecule can cross a cell membrane?
size/ polarity can be the factors
Period during which potassium ions diffuse out of the neuron due to a change in membrane permeability?
Membrane potential - a nerve cell set and ready to fire;"The wave of reverse polarity" i.e. sodium versus potassium trans-cell-membrane ion passaging - a nerve cell firing; andRecharge period - the regeneration time.
What is membrane polarity?
-70 mV this potential difference in a resting neuron (Vr) is called the resting membrane potential, and the membrane is said to be polarized.
What is a factor that determines if a molecule can cross a cell membrane?
size/ polarity can be the factors
