Week 1- Cells and Tissues Flashcards
State what layers E, D and SC are and how they appear in a histological image (Find card on Anki)
E- epidermis- darkly stained outer layer
D- dermis- thicker paler layer
SC- subcutis/hypodermis- very pale, almost clear layer
Label the diagram ( skin structure saved to computer)
Saved to computer
Briefly describe how the skin is involved in providing sensation
Network of nerve cells that detect and relay in changes in the environment (heat,cold, touch and pain)
Define ‘amphipathic’
A molecule that has a polar and a non-polar end
Define ‘cell’
Basic structural and functional unit of all living systems, consisting of an aqueous solution of organic molecules enclosed by a membrane
Define ‘compound tissue’
A compound tissue is made up of cells that are structurally and functionally different- made up of multiple cell types
Define ‘eukaryotic cell’
A cell with a nucleus and other membrane bound organelles
Define ‘filipodia’
Very small spikes of microfilament based potrusions of plasma membranes based in cell motility
Define ‘lamellipodia’
Microfilament based membrane protrusions that help cells move
Define ‘magnification’
A measure of how much larger a microscope causes an object to appear in comparison to the actual size
Define ‘metastasis’
Spread of disease producing agency (such as cancer cells) from initial or primary site of disease to another part of the body
Define ‘organelles’
Sub-cellular structure in eukaryotic cells to compartmentalise specific cell function(s)
Define ‘phospholipid’
A lipid made of a phosphate polar head group and two fatty acid chains (one saturated, one unsaturated)
Define ‘resolution’
Smallest distance by which two points can be separated and still be distinguished as two separate entities/objects
Define ‘section’
A 2D representation of a 3D object
Define ‘tissues’
Group of similar cells working together to carry out a common function