The Function and Interdependence of Organs and
Tissues
Main Idea
Supporting Information
1. We are made of cells.
1. A group of specialized cells form tissues. 2. There are four basic types of tissue
3. Nerve tissue – transfers information
from one part of the body to
another.
3. Muscle tissue – contract and relax.
4. Voluntary or skeletal muscles;
smooth tissue
4. Involuntary muscles
4. Cardiac tissue (the heart).
3. Epidermal (epithelial) tissue –
protects the body from injury and
infection. Examples include the skin
and inner surfaces of the body
such as lungs, stomachs, intestines,
and blood vessels.
3. Connective – supports and holds
parts of the body together.
Includes cartilages and bones.
1. A group of tissues
make an organ.
1. A group of organs make an organ system.
2. Organ – performs a specific function in
your body.
2. Organ system – a set of organs or
structures in the body that have a
common function.
2. Organ Systems
3. Circulatory System – moves blood and
oxygen through the body.
3. Endocrine System – makes
hormones the body needs.
3. Urinary System – collects and
removes fluids and waste from the
body; secretes urine.
Main Idea
1. A group of organ systems make an
organism.
Supporting Information
3. Digestive System – breaks down
(digests) food we eat to a form
the body can use.
3. Integumentary System – Made up of
the skin and other membranes like
the mucous membranes in the mouth
and other parts of the body.
4. The skin is the largest organ in the
body; 12% - 15% body weight;
surface area of about 1-2 meters
3. Lymphatic System – transports
digested fat from the intestines to
the bloodstream; removes and
destroys toxic substances; resists
the spread of disease throughout
the body.
4. The fluid that carries the
substances is called lymph.
3. Muscular System – allows the body
to move.
3. Nervous System – sends and
receives stimulus from parts of the
body; transmits nerve impulses;
activates muscles.
3. Skeletal System – all the rigid or
semi-rigid parts of the body that
supports soft tissues; provides leverage
from muscle actions.
Organ Systems of the Body
System
Major Organs
Primary Functions
Integumentary
Skin, hair, nails
Endocrine
Brain, spinal cord, nerves
Skeletal
Muscular
Circulatory
Bones, cartilages
Skeletal muscles
Heart, blood vessels,
lymphatic vessels
Bone marrow, lymphoid
organs
Lungs, airways
Kidneys, ureters, urethra
Protection, temperature
regulation
Regulation of other body
systems
Movement and support
Movements of the skeleton
Movement of blood and
lymph
Defense of the body
against invading pathogens
Gas exchange
Regulation of blood volume
and composition
Breakdown of food into
molecules that enter the
body
Immune
Respiratory
Urinary
Digestive
Mouth, stomach, intestine,
liver, gallbladder, pancreas
"Doctor, doctor, will I be able to play the violin after the operation?"
"Yes, of course ..."
"Great! I never could before!"