Chapter 10 Flashcards
What is the structural levels of cells
Atoms, Molecules, Organelles, Cells, tissues, organs, system, organism
define prokaryotic
Simple type of cell that lacks nucleus and membrane bound organelles (eg bacteria)
define eukaryotic
Complex cell with nucleus and membrane bound organelles
what are stem cells
cells that have the ability to produce different types of body cells. Found in the inner cell mass
what is differentiation
the process by which unspecialised cells develop special characteristics to suit particular functions
ectoderm
Outer tissue layer of embryo. Gives rise to the entire nervous system, Epidermis of skin, and the lens, cornea and muscles of the eye
mesoderm
Middle tissue layer of the embryo. Gives rise to skeletal smooth and cardiac muscles, Lymphoid tissue and the dermis of skin
endoderm
Inner tissue layer of the embryo. Gives rise to epithelium of alimentary canal and its glands (liver, pancreas), Epithelium of bladder, urethra and call bladder and epithelium of vagina and associated glands
what are the four types of tissues
Epithelial tissue, connective tissue, muscular tissue and nervous tissue
what is epithelial tissue
covering or lining tissue, forms outer part of the skin and lines hollow organs. joined closely together
what is connective tissue
provides support for the body and helps to hold all the body parts together. cells are not close together
what is muscular tissue
Respond to stimulus by contracting and are long and thin.
what is nervous tissue
means of communication between all body cells
what are the six types of epithelial tissue and their location
- Simple squamous (lining of blood vessels)
- Simple cuboidal (kidney tubule lining)
- Simple columnar (most digestive organ lining)
- Stratified squamous (Outer layer of skin)
- Stratified cuboidal (sweat gland duct lining)
- Stratified columnar (Mammary gland, epididymis)
