Cell Systems Flashcards
This covers outside surfaces and inside surfaces of your body
Epithelial tissue
What is tissue
A group of cells is similar in shape and function
Tissues organized into larger structures
ie. Heart
Organs
What are organ groups that have related functions called
Organ systems
Name the 6 body systems
Circulatory Nervous Excretory Digestive Respiratory Endocrine
Micro organism/microbes
Micro organism/microbes
Only visible under microscope-
They are unicellular organisms
List unicellular invaders
Bacteria
Protists
Fungi
What is the most primitive micro organism
Bacteria, such as parasites
Parasites must live off a body
Bacteria are prokaryotic- no nucleus
T or f
T
What is a protist
In ponds
Unicellular organisms
Neither plant or animal
Eukaryotic
What are diatoms
Plant like protists
Found in fresh/ salt water
What is euglena
Protist
If a lot of sunlight it makes its own food like plants
If not feeds on other cells
Animal like like protists
Amoeba- changes shape as it moves by stretching out cytoplasm like an arm, called pseudopod - uses to get food
Paramecium- uses cilia to move and a grove to sweep food in
Invader Fungi
Uni and multicellular
Yeast- unicellular
Multi- bread mould or mushrooms
What is a disease
Any condition harmful to or interferes with the well being of an organism
What is an infection
Agents that invade the body and interfere with normal activities of the cell
Name the categories of invaders to the body
Bacteria
Fungi
Protists
Viruses
Are viruses living things
No because they are not true cells
No nucleus,cytoplasm, organelles or membrane
They take over cells and use it like a factory to make more
It’s a small strand of genetic info
Name some viruses
Colds
Cold sores
Influenza (flu)
HIV
How we defend against viruses
Direct attack by white blood cells -engulf invader
Pus is made of strands of proteins after attack of white blood cells
Another to defend against disease is with ______
Antibodies- special white blood cells and they lock onto invading organisms
Antibodies use markers of invader to lock onto them and destroy the invader
Nostrils
Intake air
Nasal passage
Warms, filters and moistens air
Pharynx
Back of throat
Passage way for air and food
Larynx
Contains vocal cords
Epiglottis
Flap that keeps food out of trachea
Trachea
Main passage way for air
Windpipe
Bronchi
Tubes that carry air from trachea to left and right lung
Bronchioles
Takes air to alveoli
Blood vessels
Brings blood high in co2 and takes blood high in O2 back out
Capillaries
Tiny vessels where blood cells enter single file and absorb O2 from air and release co2
Alveoli
Tiny air sacs where gas exchange takes place O2 and co2
Diaphragm
Muscle that contracts when we inhale and relaxes when exhaling
Ribs
Protects organs and aides in breathing
Name the 4 different protists
Euglena- both
Diatoms- plant like
Amoeba- animal
Paramecium- animal
