Transcript Cell Types & Tissues

Cell Types & Tissues
August 22, 2011
Objective
• Define cell, tissue and relate the structure
of the following to their functions
Key Vocab
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Tissue
Ciliated Cell
Root Hair Cell
Xylem Vessels
Muscle Cells
Red Blood Cells
Organs
Organ Systems
Cell
• Basic unit of structure and function of all
living things
Cell Theory
• All living things are made up of cells
• Cells are the basic unit of structure and function in living
things
• All cells come from pre-existing cells
Tissue
• tissue is made up of a group of cells with
similar structures, working together to
perform a shared function
• Different tissues
contain specialized
cells to perform specific
functions of that
tissue
Ciliated Cells
• Commonly found in the respiratory tract
• Contain cilia, microscopic hair like
projections on the surface of the cell that
sweep fluids or particles away
• Function: movement
Ciliated Cells
Root Hair Cell
• cells found near to the tip of the roots of
plants.
• Most water enters the root through them.
• The thin hair-like extension of
each cell gives a large surface
for water to enter across.
• Function: absorption
Root Hair Cell
Xylem Vessel
• xylem is a type of vascular tissue found in
plants
• two major functions:
– the conducting of water and
mineral salt from root to leaves,
– to provide mechanical strength
(support) to the plant body.
• Function: conduction & support
Xylem Vessel
Muscle Cells
• skeletal muscle cells found in muscles
attached to our skeleton
• voluntarily controlled
• function: contraction
Muscle Cells
Red Blood Cells
• Travel through your blood vessels
delivering oxygen and removing wastes
• Appear red because they
contain hemoglobin that binds
oxygen for transport
function: transport
Red Blood Cells
Organs
• An organ is a structure made up of a
group of tissues, working together to
perform specific functions
Organ Systems
• An organ system is a group of organs
with related functions, working together to
perform body functions