Human Anatomy-Chapter 0 Flashcards
What are the levels of life?
- chemical
- cellular
- Tissue
- Organ
5.Organ system - Organism
what is the smallest organizational level of the body?
Chemical level- these are small (minute) particles and atoms that combine with one another and forms molecules.
After this molecules get together and form organelles
Organelles are…
fundamental components of a cell
on the cellular level….
Cells are the smallest unit of organism
Cells in the body are :
- smallest unit of organisms
- functional and structural component for life
- quasi-autonomous
What does quasi means?
having some resemblance usually by possession of certain attributes.
define Autonomous
a property of cells whereby they act independently of surrounding cells or tissues
what are tissues in human body?
tissues are cells which are similar in function getting together - they are often derive from common stem cells
what are stem cells?
Stem cells are the body’s raw materials — cells from which all other cells with specialized functions are generated. They can self replicate and make daughter cells.
what are the 4 main types of tissues?
- epithelial
2.connective - muscle
- nervous
epithelial tissues …
cover the surface of the body and
lines the internal cavities
connective tissues are …
support the body and protects the
organs
muscle tissues are ….
responsible for movement
Nervous tissues …
permit rapid internal communication via
the transmission of electrical impulses
what are organs?
issues associate to form organs;
complex physiological processes happen and each
organ has a specialised functional structure to
execute an essential activity that no other organ can
accomplish in its place