Phlebotomy Ch. 6
What are the 3 levels of organization in the human body?
Cells, Tissue, Organs
What are the 3 types of muscle tissue?
Skeletal (striated voluntary) Cardiac (striated involuntary) smooth (nonstriated involuntary)
What are the smallest living units in the body?
cells
What are Body systems?
groups of organs that function together for a common purpose
Where is epithelial tissue found?
surfaces such as lining the stomach, or skin
What do dorsal and posterior refer to?
the back surface of the body
What is Mitochondria?
they are the cells power plants
What does mitochondria do?
they burn fuel such as sugar and fats with oxygen in order to supply energy for the cell
How do neurons communicate?
they conduct electrical impulses and in turn release chemical messages.
What is the general function of connective tissue?
to bind and support the 3 other types of tissue
What a directional terms?
what we use to describe one body part in relation to another or to describe a motion in relation to some part of the body.
What function does the nucleus perform?
Formation of new cells
Which organs use all 4 tissue types?
Heart, lungs and kidneys
What are the four different kinds of tissue?
Epithelial, muscle, nerve and connective
How does the plasma membrane function?
It decides what to let in and out of the cell
What parts of the body contain the highest amounts of mitochondria?
Neurons and muscle cells
What are the different structures to a cell?
Nucleus, mitochondria, cytoplasm, plasma membrane
What do the terms ventral and anterior refer to?
The front surface of the body
What is the transverse plane?
The horizontal plane that divides the body into top and bottom
What is the frontal plane?
The vertical plane that divides the body front to back
What is the Sagittal plane?
The vertical plane that divides the body into left and right
What is significant about muscle tissue?
it can expand and contract
What is an organ?
it is a distinct structural unit in the body that is specialized for a complex function
What does Cytoplasm do?
it is everything else inside the cell.
What is the function of nerve tissue?
it is specialized for intercellular communication
