Cells Flashcards
4 main units of the human body
Cells
Tissues
Organs
Systems
Define Structure
Define function
How the body is organized and arranged or put together
How the body structures work
Each cells has what?
A nucleus, cytoplasm, cell membrane
Different types of cells
Blood cells, neuron, smooth muscle cells, cardiac muscle cells, bone cell, surface skin cells
Every cell…
Requires water
Breathes (oxygen)
Digests (uses nutrients)
Eliminates wastes
Reproduces
What are the 4 basic types of tissue in human body
Epithelial - covers internal and external surfaces
Connective - anchors/connects other tissues
Muscle - movement through contraction
Nerves - main component of brain, spinal cord nerves in the body
How many quadrants and what are they called for the abdomen
Right upper quadrant
Left upper
Right lower
Left lower
What is organ
Groups of tissues that work together to perform special functions
What is systems
Groups of organs that work together to perform certain functions
What are the characteristics of human cells
Microscopic
Building blocks of the body
Millions in each body
What is homeostatsis
All organs and systems work well together
What are body cavities and what are two major ones
Organs are located within body cavities
There is ventral (anterior) and dorsal (posterior)
