Human Systems Human Systems Part OnePart One
Humans are complex organisms made up of many different types of systems, each carries out a specific life process.
Human SystemsHuman Systems
A- A- LevelsLevels ofof OrganizationOrganization::
1- CellsCells the basic unit of life. Humans have many different cells that carry out many different functions.
2- TissuesTissues:: Groups of similar cells working together to perform a task
Skin Lung Heart
3- 3- OrganOrgan:: Groups of tissues working together to perform a task.
4- 4- OrganOrgan SystemsSystems:: a group of OrgansOrgans working together to perform a task.
II- II- SkeletalSkeletal SystemSystem
A-A- Function
1-Support
2- Protects Internal Organs
3- Produces Blood Cells
B-B- Bones are Strong but Light.
1- 1- JointsJoints: Place where : Place where bones meet.bones meet.
a- ball and socketa- ball and socket
b-hingeb-hinge
c-immovablec-immovable
d-pivot d-pivot
2-2- TendonsTendons: Attach muscle to bone
3-3-LigamentsLigaments: Attach bone to bone
III- III- MuscleMuscle
A- Two Types A- Two Types
1-1- VoluntaryVoluntary you can control
a- Skeletal muscle
2- 2- InvoluntaryInvoluntary you have no control over.
a-a- Cardiac (Heart)
b- b- Smooth (Stomach, Circulatory)
B- B- SkeletalSkeletal MuscleMuscle: Works in opposing pairs
Front View (Anterior) Back View (Posterior)
IV- IV- SkinSkin: :
A- First Line of Defense:A- First Line of Defense:
1- Function=1- Function=
a- Gets rid of wastes (perspire)
b- Regulates Body Temperature
c- Protects if not cut or open
d- Water proof
A.A. POREPOREB.B. HAIRHAIRC.C. NERVE NERVE
ENDINGSENDINGSD.D. FAT CELLSFAT CELLSE.E. SWEAT SWEAT
GLANDGLANDF.F. HAIR HAIR
FOLLICLEFOLLICLEG.G.DERMISDERMISH.H. EPIDERMIS EPIDERMIS I.I. BLOOD BLOOD
VESSELSVESSELS
