22 March 2009

Bagging up the sea and carrying it around

Just in case you have not found us on Blackboard and elluminate yet, here's what you should be doing!

Introduction:
It is common knowledge that life began in the sea and is therefore adapted to the sea, and a common enough idea that we now carry the sea round inside us, one way or another, to allow our bodies to work. It is a very useful idea and allows us insight into the way our mechanics work. We are slung on bones, like a building on its timber frame, but we are much more than that. We are also 'plastic bags of salty water, all bound up to make a hydrostatic skeleton'. Our tissues form that hydrostatic skeleton, especially our connective tissue.

Tasks:

  • Find us on Blackboard: all those enrolled on the course should have access. Let me know if you haven't, by comment here or email in to massage therapy. If you have, get on there and say hello!
  • Listen to Elluminate if you were not there. Instructions as to how to find the recording are on Blackboard, but a big hint is that the recording comes up on the page for Friday 13th, not Tuesday 17th! Check that you can find our next one (Tues 24th, it should 'go live' at 11am and you can then click on it to enter the meeting), so that you are ready to join in.
  • Reading:




I'd like us to be moving on to looking at tissues, with a heavy emphasis on connective tissues and, in particular, fascia.
  • Try to read Chapter 3 in Job's Body. Its an old book, but has a lot of basic stuff written in a way that makes sense to massage. Chapter 3 is called Connective Tissue and contains various sections and subsections:
    • Water Bags - orientates you, but can be skimmed if you find its familiar stuff
    • The Main Ingredients - 4 sections that I'd really like you to read
    • Hydrogen Bonding - 2 sections that I'd really like you to read
    • The Supportive Network - skip if you haven't got time or it looks complicated, although the bit called Hydrostatic pressure is fun, even if it doesn't sound like it from the title, easy to understand and a useful analogy.
    • Connective Tissue as Retort - skip unless you have time and interest.
    • Connective Tissue as Organ - read if you have time & interest.
    • Theraputic Manipulation of Connective Tissue - relevant to practise, but much less so to bioscience, so read if you have time & interest.
  • Remind yourself about the tissues you studied in Bioscience 2. Especially connective tissue. Some of the key issues are: what is the ground substance & is it gel or sol, what kind of cells are there, what kinds of fibres, and how well is it supplied with blood?
  • Try looking up fascia, in relation to massage therapy, or in relation to anatomy & physiology. Share any sites you find useful, use the discussion board. But don't drown in the information stream, there's a lot out there!
Resources:
Juhan, Deane. 1987. Job's Body. Station Hill Press, New York.
Marieb (as usual)
Wikipedia (try fascia, and adhesion)
Other web sites?

17 March 2009

Moving to Blackboard


Due to popular request (well that's one thing to call it anyway), this blog teaching course is now moving to a private space on Blackboard. So don't watch this space too hard!

"Workbook" outline

Just so you have this if you can't get onto Blackboard: the outline I showed in class last Friday. Not really a workbook, but I'll work on that request in future. Contains new stuff about tissues.


Keeping it together (cell mechanics and cell mechanisms)

The Plasma membrane: (pp66-70: text finishes on p69, diagrams on p70).

How does the membrane keep it together?

Side box: how is a cell membrane like a tent canvas?

A. The membrane itself

· Function

o Bag for keeping things in

§ What things?

o Immigration/emigration control

§ List of molecules that go in/out

§ List of types of ‘holes’ in membrane

B. Membrane junctions

·

Side box: getting things in and out of the tent

Function

· Types

o D

o T

o G

Cytoskeleton (pp90-95: text finishes on p95, but ignore table 3.3 on pp94-5)

(Picture of red blood cells)

What holds the cell membrane in shape?

C. Tubules and filaments

· Microtubules

o

Side box: holding the tent up, poles and ropes

Structure

o Function

· Microfilaments

o Structure

o Function

· Intermediate filaments

o Structure

o

Side box: moving round in the tent, flapping the tent walls, swimming tents?

Function

D. Movement

· Moving organelles around in the cell

· Cilia and flagella movements

· Moving the cell membrane

· Examples from cell division

Migrating cells (pp111, 112, 111, 68, 83-84)

How do cells know where they are/should be?

Side box: where is my tent in this campsite/country?

E. Where am I?

· Superficial and deep

· Inside, outside and in-between

· Head-tail, tummy-back, proximal-distal

Side box: taking my tent down & going home, or putting up more tents

Should I be here?

· Apoptosis

· Hyperplasia & wound healing

· Atrophy

F. The extracellular matrix

· Body fluids

·

Side box: what’s the countryside like outside, can I move my tent easily?

Extracellular matrix

o Loose connective tissue

§ Areolar

§ Adipose

§ Reticular

o Dense regular connective tissue

§ Tendons & ligaments

§ Fascia

o Dense irregular connective tissue

§ Cartilage

· Hyaline

· Elastic

· Fibrocartilage

§ Bone

§ (Blood)

G. Proteins in the cellular membrane

· Peripheral proteins

· Intercellular joining (mooring your boat)

· Cell to cell recognition (got your swipe card?)

o glycoproteins

· Attachment to cytoskeleton & the extracellular matrix (tethering your cow!)

H. The glycocalyx (sugar coating)

· CAMs

· Function of CAMs

o ‘Velcro’

o Movement in wound repair

o Indicating wound site

o Tension monitors

o Signalling

· Signals

o Physical (touch)

Chemical

Electrical

o Chemical

o Electrical

Massage Therapy:

Connection & relevance to Massage Therapy?