stem cells, tissues and cancer
No description yet. This curated deck is ready for daily study.
Card preview (24)
totipotency
the ability to produce a full formed, complex multicellular organism
stem cells and proliferating precursor cells generate a continuous supply of ___
terminally differentiated cells
when a stem cell divides, each daughter cell can either ___ or ___
either remain a stem cell or go on to become terminally differentiated
terminally differentiated cells
cells that can no longer divide
the control mechanism that ensures new differentiated cells are generated in the appropriate places and in the right numbers depend on ___ and ___
extracellular signals exchanged between the stem cells and their progeny and other cell types
embryonic stem cells can differentiate into
any type of cells
how are induced pluripotent stem cells produced
genetically reprogramming adult stem cells into a pluripotent state
why is the technology of producing induced pluripotent stem cells important
no longer need the use of embryonic stem cells, which is considered unethical
define a tissue
a group of cells
3 examples of tissues classify them with hard, semisolid and liquid
bone (hard), fat (semisolid), or blood (liquid)
histology
the science that deals with the study of tissues
pathologists specialise in ___
laboratory studies of cells and tissues for diagnoses
three processes fundamental to animal development
• cell proliferation • cell specialisation • cell morphogenesis
cell morphogenesis is a process where ___
a cell acquires its shape and structure
three primary germ layers tissues of the body developed from
ectoderm, endoderm, mesoderm
epithelial tissues develop from which of the three primary germ layers
all three
all connective tissue and most muscle tissues drive from which of the three primary germ layers
mesoderm
nervous tissue develops from which of the three primary germ layers
ectoderm
what doe areas of the embryo develop into: dorsal, ventral, anterior, posterior, left and right
dorsal - back ventral - stomach anterior - head posterior - bottom left and right
gastrulation is a critical embryonic development phase where
a single-layered blastula reorganizes into a three-layered structure called the gastrula
first step of tissue differentiation from a fertilised egg
divides to produce a blastula
4 types of animal tissue
• epithelial/barrier tissue • connective tissue • muscle tissue • nervous tissue
function of epithelial/barrier tissues
covers body surfaces and line organs, cavities, ducts and glands
epithelial tissues are TYPICALLY made from ___ , such as ___ , ___ and ___ stratified epithelial sheets contain ___
a single layer of cells that have a particular shape columnar, squamous, or cuboidal a mixture of cell types