Living Organisms carry out life Living Organisms carry out life processes in order to survive.processes in order to survive.

The human body is complex.The human body is complex.Cells

Tissues

Organs

Systems

Living Organisms carry out life Living Organisms carry out life processes in order to surviveprocesses in order to survive

CellCell = basic unit of life= basic unit of life

TissueTissue = group of similar cells that work together = group of similar cells that work together

to perform a function to perform a function

OrganOrgan = group of different tissues that work = group of different tissues that work together to carry out a function in the together to carry out a function in the body body

SystemSystem = group of organs that work together to= group of organs that work together to perform a function to meet material perform a function to meet material and energy requirements and energy requirements

Living Organisms carry out life processes Living Organisms carry out life processes in order to survivein order to survive

The body’s systems interact with one The body’s systems interact with one another.another.

HOMEOSTASIS

The ability of your body to maintain internal conditions.

Living Organisms carry out life Living Organisms carry out life processes in order to surviveprocesses in order to survive

HOMEOSTASISKeeps the following

balanced….

• Body temperature

• Amount of blood sugar• Posture

(There are other examples.)

Living Organisms carry out life Living Organisms carry out life processes in order to survive.processes in order to survive.

The body’s systems interact with one The body’s systems interact with one another.another.

Body SystemsSkeletalMuscular

CardiovascularRespiratoryDigestiveNervous

EndocrineUrinary

IntegumentaryReproductive

The body’s systems interact with one The body’s systems interact with one another.another.

Skeletal System = interacts with muscles & cardiovascular system

Axial Skeleton = skull, rib cage, backbone

Appendicular Skeleton = shoulders, hips, arms, legs

Joints = free moving, immovable, slightly movable

MOVEMENT PRODUCES BLOOD

The body’s systems interact with The body’s systems interact with one another.one another.

Muscular System = interacts with skeletal and nervous systems

MOVEMENTPOSTURE

MOVEMENTBODY TEMPERATURE

The body’s systems interact with The body’s systems interact with one another.one another.

Muscular System = interacts with skeletal and nervous systems Skeletal Muscle = voluntary

triceps rectus abdominus

Smooth Muscle = involuntary digestive system arteries, veins

Cardiac Muscle = involuntary heart

The body’s systems interact The body’s systems interact with one another.with one another.

Muscular System = interacts with skeletal and nervous systems Skeletal muscles & tendons

allow bones to move.

•Tendons = strong tissues that attached muscles to bones

•As fibers in a muscle contract, they shorten and pull the tendon.

•The tendon then pulls the bone.

Muscular System = interacts with skeletal and nervous systemsMuscles work with nerves to

produce movement.

• Communication between the nerve cells and muscle cells produce muscle contractions.

• The communication involves the diffusion of elements in and out of the muscle and nerve cells. (active transport)

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