Cells, Tissues and Organs Flashcards
What are examples of tissues?
-Muscle
-Lining of intestine
-Lining of lungs
-Phloem
-Root hair tissue
What are organelles?
Sub-cellular structures that are specialised to carry out specific jobs within the cell
What is a tissue?
A group of similar cells that work together to carry out a function
What is an organ?
A group of different tissues that work together to carry out a function
What are the 3 types of tissues in humans?
-Epithelial tissue
-Muscular tissue
-Glandular tissue
Which part of your body contains all 3 types of tissue?
The stomach
What is an organ system?
A group of organs that work together to carry out a function, eg: digestive system
What is the order of how an organism is made?
Organelles -> Cells -> tissues -> organs -> systems -> organism
What are examples of cells?
Root hair cell
Bone cell
Nerve cell
Epithelial cell
What are examples of tissues?
Root epidermis
Skeletal tissue
Nervous tissue
Intestinal epithelium
What are examples of systems?
Nervous system
Root system
Digestive system
Skeletal system
What are examples of organs?
Brain
Small intestine
Femur
Root
What are key human organ systems?
Circulatory system
Respiratory system
Digestive system
Reporductive system
What does the circulatory system do?
Transports substances in blood
Which organs are involved in the circulatory system?
Heart and blood vessels
What does the respiratory system do?
Take in oxygen and remove carbon dioxide
Which organs are involved with respiratory system?
Nose and lungs
What does the digestive system do?
Break down food and absorb nutrients
Which organs are involved with the digestive system?
Stomach and intestines
What does the reproductive system do?
Reproduce, make new children
Which organs are involved with the reproductive system?
Genitals
What are the 4 organs of a flower?
Root, leaves, stem and petals/flower
Why are unicellular organisms constantly in direct contact with their environment?
So they can absorb nutrients straight from their surroundings, which is why they do not need organ systems
Why do multicellular organisms need organ systems?
They have many more cells that cannot all be in direct contact with the environment, therefore the organisms develop systems to ensure they receive all nutrients that they need, which is why we need organ systems.
What is a group of tissues known as?
An organ
