Lecture 1 - tissues Flashcards
What are the 3 core principles of the human tissue act (2008)?
- the donation of bodies is voluntarily
- it requires dual signed consent by the donor and an immediate family member (a) the family has the power to withdraw consent at anytime and have the body returned to them
- most bodies are held for around 18 months, but can be kept for longer periods for teaching and research under the act
Name the 4 basic types of tissue.
epithelial, connective, muscle, nervous
What are 4 functions of epithelial tissue.
- providing physical protection
- controlling permeability
- providing sensation
- producing specialised secretions
What are the 3 subtypes of connective tissue?
- connective tissue proper
- fluid connective tissue
- supporting connective tissue
What are the 2 subtypes of connective tissue proper and there own subtypes?
loose; areolar connective tissue, adipose tissue, regular connective tissue
dense; dense regular, dense irregular, elastic
What are the 2 key fibres the make up connective tissue proper and there functions?
collagen; strong, resists tension (thick banded)
elastin; stretchy, recoils back to its shape (thin)
What is a fibroblast?
a cell in connective tissue that produces collagen and fibres
What are the 3 main types of muscle tissue?
skeletal, cardiac, smooth
What is the function and appearance of the skeletal tissue?
function: movement and contraction
appearance: striated (stripy)
Which muscle tissues are under voluntary control and which are not.
voluntary: skeletal
involuntary: cardiac, smooth
Where is cardiac muscle found?
in the heart
Where are smooth muscles found?
walls of hollow organs eg. blood vessels, gut
What are the 2 types of cells that make up nervous tissue?
neurons and glia
What is the long “cable” of the neuron called and what is its function?
axon - carries electron impulses from the neuron to be received by other neurons
What are dendrites?
they receive information from other neurons
Where they are connective tissue found?
bones, tendon, fat and other soft padding tissue
Describe nervous tissue and give examples of where they are found?
internal communication; brain, spinal cord, nerves
Name the 2 glands of epithelial tissue and describe their functions.
endocrine gland; secrete hormones/chemical messengers into the blood
exocrine gland; excretes substances out of the body eg. sweat, oil, stomach acid
