Answers to the Key Learning Outcomes for Lectures on the topic of Cell communication (1st topic in the Biomedical Sciences 2 course from The University of Edinburgh).
Brief and summarised nots for knowledge needed to pass the end-of-year Year 2 Biomedical Sciences exam.
NOT ALL INFORMATION ...
Types of cell-cell communication (extracellular signalling) are:
Paracrine Autocrine
localised, only affects localised, only affects
neighbouring cells. neighbouring cells of the
same cell type.
Synaptic Endocrine
chemical neurotransmitter Hormones with secreted into
secretion across synapses bloodstream.
between neurons. Signals can travel long
Signal travels short distance distances anywhere in the
of approx. 100nm. body.
Fast communication between Slow communication
cells. between cells.
Receptors have low affinity. Receptors have affinity.
Cells communicate directly with other cells via gap junctions on cell
membranes. Gap junctions allow small soluble molecules to flow into
another cell.
Hydrophobic signalling molecules e.g. steroids, thyroid hormones,
retinoids and vitamin D, can freely diffuse from and across plasma
membranes of cells.
Hydrophilic signalling molecules are taken up into and released from cells
via:
*Pumps, transporters and ion channels *Exocytosis and
endocytosis
(for metal ion transport) (for protein, peptide,
amino acid and
nucleotide transport).
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lilianzhang. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.91. You're not tied to anything after your purchase.
