Transcript Body Systems Powerpoint

Lesson 5 - Levels of Organization
The 5 levels of organization
1st Level--Cells
2nd Level--Cells make up
tissues
3rd Level--Tissues make up
organs
4th Level--Organs make up
organ systems
5th Level--Organ systems
make up the
organism!
Let’s put these 5 levels together.
Level 1 – Cells (Heart)
Level 2 – Tissues (Veins,
Arteries, Capillaries)
--------->
Level 3 – Organs (Heart)
Level 5 – Organism (You)
Level 4-Organ System
(Circulatory System)
------------------------>
4 types of Human Tissue
1. Epithelial
2. Connective
3. Muscle
4. Nervous
1st- Epithelial Tissue
Closely packed cells
that cover body
surfaces and the
Internal structures.
ExamplesSkin and
blood vessels
2nd – Connective Tissue
Has many different
forms and functions
Examples:
Bone, Fat,
Cartilage, Blood
3rd – Muscle Tissue
Contracts to allow
movement.
Examples:
Heart, Biceps,
Tongue
4th – Nervous Tissue
Transmits and
processes
information.
Examples:
Spinal Cord,
Brain, Nerves
The Organ Systems of the Human Body
1. Respiratory
7. Skeletal
2. Circulatory
aka--Cardiovascular
8. Reproductive
3. Nervous
10. Immune
aka--Lymphatic
4. Digestive
5. Urinary
aka--Excretory
6. Muscular
9. Endocrine
11. Integumentary
1st Body System - Respiratory
Organs – Mouth, nose,
pharynx, larynx, trachea,
bronchi, lungs
Function –
Provides oxygen
to the body’s cells for
Cellular respiration;
removes Carbon dioxide
as waste from the body.
2nd Body System - Circulatory
Aka: Cardiovascular
Organs – Heart, blood,
blood vessels
Function –
Carries oxygen
and food to the
cells and carbon
dioxide away
from the cells as
waste; fights
infection.
3rd Body System - Nervous
Organs – Brain, spinal
cord, peripheral
nerves, sense organs
Function –
Organizes the body’s
response to stimuli,
or changes
in its internal or
external
environment.
4th Body System - Digestive
Organs – Mouth, pharynx,
esophagus, stomach,
small and large intestines.
Function –
Breaks down
food into smaller
particles that can
be used by the
body’s cells for
energy.
5th Body System – Urinary
Aka: Excretory
Organs – Skin, lungs,
kidneys, Ureters,
urinary bladders, urethra
Function –
Removes waste from
the body.
6th Body System - Muscular
Organs – Skeletal
muscles,
smooth muscles,
heart (cardiac)
Function –
Works with skeletal
system to produce
movement.
7th Body System - Reproductive
Organs – Male:
Produces and
delivers sperm.
Female: Produces eggs
and nourishes and
shelters the
unborn baby.
8th Body System - Skeletal
Organs – Bones,
cartilage, ligaments,
tendons
Function – Supports
the body and
protects
internal organs.
9th Body System - Endocrine
Organs – Pancreas,
ovaries (in females),
testes (in males),
hypothalamus,
pituitary, thyroid,
adrenal glands
Function – Controls
growth, development,
metabolism, and
reproduction.
HORMONES!!
10th Body System - Immune
Works with the
Lymphatic system
Organs – White blood
cells, thymus,
spleen, lymph nodes,
lymph vessels.
Function – Protects
the body
from disease.
11th Body System - Integumentary
Organs – Skin, hair,
nails, sweat
and oil glands.
Function – Acts as a
barrier against
infection and injury.
Discussion Question
Identify an activity you were involved in
recently. Then describe how at least
three of your organ systems cooperated
to make the activity possible.
1. Which of the following is not a level of
organization in the human body?
A. Organelle
C. Tissue
B. Cell
D. Organ
Answer: A
2. Which of the following shows the
correct order of the levels of
organization from simplest to most
complex?
A. organ system, organ, tissue, cell
B. cell, tissue, organ, organ system
C. tissue, cell, organ system, organ
D. organ system, tissue, cell, organ
Answer: B
3. A group of organ systems makes up
A. an organelle.
B. a cell.
C. a tissue.
D. an organism.
Answer: D
4. Which type of tissue are bones made of?
A. epithelial
B. connective
C. muscle
D. nervous
Answer: B
5. Which level of organization is represented by a
group of different tissues that work together
to perform a function?
A. cell
B. tissue
C. organ
D. organism
Answer: C