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Human Body Systems

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Human Body Systems Functions Uses chemicals (hormones) to: a. Regulate internal environment Functions b. Adapt to stressful situations Functions c. Promote growth and ... – PowerPoint PPT presentation

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Title: Human Body Systems


1
Human Body Systems
2
Levels of Organization
  • 1- cells
  • 2- tissues
  • 3- organs
  • 4- organ systems
  • 5- organism

3
Each system works together to help us function
and survive
4
Skeletal System
5
Skeletal System
  • The framework of your body and it is made of 206
    living bones (300 in babies)

6
5 Functions of the skeletal system
  • 1. Gives shape and support to your body

7
  • 2. Protects your internal organs


8
  • 3. Muscles attached to your bones help you move

9
  • 4. Marrow in the center of bones makes blood
    cells (2.5 million/second)

10
  • Bones store calcium and phosphorus for our body
  • - Ca helps our heart and muscles work
  • P helps our cells produce and store energy
  • When stored in our bones, Ca and P help make
    bones stronger

11
Muscular System
12
Over 600 muscles make movement possible
13
2 Functions of the Muscular System
  • 1. Helps your body move

14
  • 2. Produces heat for your body (through exercise
    or shivering)

15
Integumentary System
  • Our largest system, made up of one organ
  • Skin

16
4 Functions
  • Protection

17
  • 2. Sensory Response

18
  • 3. Vitamin D formation

http//www.nature.com/news/skeletons-show-rickets-
struck-the-medici-family-1.13156
19
  • 4. Maintain body temperature- using blood vessels
    constricting and sweating

20
Digestive SystemHelps provide energy for our body
21
1 Function
  • Break down food into small molecules so it can be
    absorbed and moved by the blood stream which
    delivers it to your cells for energy.

22
Circulatory SystemA delivery system
23
2 Functions
  • 1. Blood delivers nutrients (food) and oxygen to
    cells so they can function.

24
  • 2. Blood removes waste products, like carbon
    dioxide, from cells.

25
Respiratory SystemExchanges air
26
1 Function
  • Supplies body with fresh oxygen (needed by cells)
    and removes carbon dioxide (waste product)

http//www.goldiesroom.org/Note20Packets/1320Hum
an20Other/0020Human20Other20Systems--WHOLE.htm

27
Both circulatory and respiratory systems work
closely together
28
Excretory System
  • Any system that eliminates wastes

29
Included in excretory system are
  • Digestive-water and undigested food out
  • Respiratory- carbon dioxide and water out
  • Skin-sweat and salts out
  • Urinary-water, metabolic wastes and salts out

30
Urinary System Function
  • It filters your blood and removes wastes produced
    by your cells
  • Fluid levels in the body are also maintained by
    the urinary system

31
Nervous SystemA control system
32
Function
  • Allows your body to react to your environment and
    stimuli.

33
Endocrine System
  • A control system for your body

34
Functions
  • Uses chemicals (hormones) to
  • a. Regulate internal environment

35
Functions
  • b. Adapt to stressful situations

36
Functions
  • c. Promote growth and development

37
Functions
  • d. Coordinate circulation, digestion, and
    absorption of food.
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