Transcript Human Body Systems Power Point

Human Body Systems
What is a system?
• A group of cells, tissues and organs that work
together both physically and chemically to carry
out a task.
Assignment
• System: Give the name
• Main Job: one sentence description of the
job of the system
• Organs: list main organs
Cardiovascular System
• Transport of materials to
and from cells
• Heart pumps blood
• Blood vessels carry blood
• Oxygen is delivered to all
cells
• Carbon dioxide is
delivered out of cells
• Arteries go away from
heart and veins go towards
heart
• Sometimes called
circulatory system
Digestive System
• Ingestion of food
• Breakdown of food
• Elimination of waste
(large intestine)
• Stomach churns
(mixes) food
• Small intestine
“digests” food and
sends it into the blood
Endocrine System
• Hormonal control of body
functioning
• Hormones are made in
GLANDS
• Growth hormone
• Adrenalin hormone
• ADH hormone to control
water in body
• Testosterone and Estrogen
Immune System
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• Protects body form
microbes
• Bacteria
• Virus
• Fungi
• Protists
• White blood cells!
Nervous System
• Send and receive
signals to/from the
brain
• Uses five senses
(touch, taste, hearing,
sight and smell)
• Integration of all
systems
• Cell = NEURON
Neuron
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• Specialized cell in
nervous system
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Respiratory System
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• Provides cells with
oxygen
• Removal of carbon
dioxide waste
• Trachea and bronchial
tubes
• Alveoli are tiny sacs in the
lungs where oxygen goes
into the blood and carbon
dioxide comes out
Urinary System
• Kidneys filter blood
• Water, salt and urea
are taken out of kidney
and urine is formed
• Bladder stores urine
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