Download Unit 2 – Multicellular Organisms

LEARNING OUTCOMES:
•Explain
what a cell, tissue, organ,
body system and organism are
•Name
5 body systems
•Explain the role of each system
Living things are made up of organized systems too.
Each specific cell is grouped with other cells similar in structure and function
to form tissues and ultimately organs.
Cells are the
basic units of
life.
cell
Groups of cells work
together to form
tissues.
tissue
Groups of tissues
work together to form
organs.
organ

Cells are the simplest u___.
unit

tissue - like
LOTS of cells work together to make a t______
muscle.

tissues working together make an o_____
LOTS of t_______
organ like the heart.


Similar tissues and organs work together to make a
system – like the d_______
digestive system
These systems work together to create an
o__________
(like a human)
organism
Cell
Tissue
Organ
Systems
Organism
______ -> ______ -> ______ -> ______ -> ______
1. Name of
Body System
2. Function of
system
3. Organ / body
parts involved
Digestive System
Breaks down food into
smaller molecules so they
can be absorbed into the
blood stream.
Respiratory
System
Brings oxygen into the body
from the air. Removes
carbon dioxide from the
body.
Mouth, Stomach,
Oesophagus (gullet),
Pancreas, Liver
Small & Large intestine,
Rectum, Anus
Lungs, windpipe, bronchus,
bronchioles, air sacs,
diaphragm, nose and mouth,
ribcage
Circulatory
System
Transports oxygen and
nutrients to body cells and
carries away waste
products.
Heart, arteries, veins, blood
capillaries
Reproductive
System
Produces sex cells (sperm
and eggs). Nurtures the
unborn baby (foetus).
Testes, Vagina, Egg, Sperm
Duct, Uterus, Sperm
Oviduct, Ovary, Penis
1. Name of
Body System
2. Function of
system
3. Organ /
body parts
involved
Skeletal System
Provides shape and
structure to the body.
Allows for movement.
Protects vital organs.
Skull, ribcage, vertebra,
bones, ligaments
Urinary System
Cleanses the blood. Rids
the body of wastes.
Maintains salt and water
balance.
kidneys, bladder, urethra,
ureter
Muscular System
Allows for movement of the
body. Keeps head in
position. Provides heat.
Muscles, tendons,
ligaments
Nervous System
Receives incoming
information (senses).
Sends messages to the
body about how to react.
Brain, nerves, senses,
spinal cord