Cell Types & Tissues

August 22, 2011

Objective

• Define cell, tissue and relate the structure of the following to their functions

Key Vocab

• 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