Transcript Organ Systems and Homeostasis - Mr. St. Peter's

Organ Systems and Homeostasis
The Human Body!
Cells…Tissues…Organs…Systems
• Cells: Basic unit of
structure and
function—keeps
organisms alive
• Tissues: Group of
specialized cells that
perform the same
function—what are
the 4 types?
4 Types of Tissue
• Connective: Connects
all parts of body
• Epithelial: Surfaces of
body inside and out
• Muscle: Makes parts
of the body move
• Nervous: Controls
messages between
brain & parts of body
TissuesOrgansOrgan Systems
• What are organs?
• ….made up of tissues that do a specific
job!
Organ Systems
• What is an organ system?
– Group of organs that work together to perform a
major function
– There are 11 in the human body
– ISM are the first 3!
– 1. Integumentary: (P511) skin, hair and nails
• Function: provides a barrier and protection
– 2. Skeletal: (P 519) bones, cartilage, ligaments, tendons
• Function: Provides support and protection, minerals,
blood cells
– 3. Muscular: (P 527) muscles
• Function: Pulls on the skeleton to provide movement
What are these 3 organ systems?
The next 6 organ systems
• 4. Circulatory: (P 512): tube like vessels
throughout body provides a transportation
network
– Function: carries food and oxygen to all the
cells
• 5. Respiratory (P 512): lungs, nose, pharynx,
larynx, trachea, bronchi, bronchioles, lungs
– Function: takes in oxygen and disposes of
carbon dioxide
• 6. Digestive System (P 512): mouth, pharynx,
esophagus, stomach, small and large intestines,
rectum, liver, pancreas
– Function: breaks down food into small
molecules the body can use
• 7. Excretory System: (P512): kidney, ureter,
urinary bladder, urethra
– Function: removes waste from the breakdown of
materials in the bloodstream
• 8. Immune System: (P568): specialized white
blood cells
– Function: destroys disease-causing bacteria and
viruses
• 9. Reproductive: male males-testes, epididymis,
vas deferens, urethra, and penis; FemalesOvaries, Fallopian tubes uterus, vagina
– Function: contains organs that produce sex cells
and produce chemicals that regulate physical
development of maturing bodies.
C, R, D, E, I, R: These 6 carry out
the processes of life.
Last 2 are Nervous and Endocrine
These two provide
control over body
processes.
• 10. Nervous: Brain, spinal cord, peripheral
nerves, (senses: sight, hearing, touch, smell,
taste)
Functions: Recognizes and coordinates the
body’s responses to changes in its internal and
external environments
•11. Endocrine: Glands- Hypothalamus,
pituitary, pineal, thyroid, parathyroid,
adrenals pancreas, ovaries (females), testes
(males)
Function: Controls growth, development, and
metabolism, maintains homeostasis
I, S, M, C, R, D, E, I, R, N, E
• I, S, M, C, R, D, E, I, R, N, E
–ISM (I See My)
–CRDEIR (Cat Running Delightfully
Except In Rooms)
• NE (Not Empty)
Homeostasis
• All of the body systems work together to
maintain homeostasis!
• The process by which an organism’s
internal environment is kept stable in
spite of changes in the external
environment.
• What are examples?
• Why is this important?