multicellular organization section 7.4 – homeostasis and cells
TRANSCRIPT
Multicellular Organization
Section 7.4 – Homeostasis and Cells
Place the following terms in order:
Simplest Most ComplexWordParagraphLetter (A, B, C,…)ChapterBookSentence
Unicellular vs. Multicellular:
In unicellular organisms (prokaryotes & eukaryotes), one cell carries out all of the functions of life.
Most cells of multicellular organisms are specialized to perform one or a few functions so they depend on the other cells for survival.
Both unicellular and multicellular need to maintain homeostasis
plant-like protist
animal-like protist
Place the following terms in order:
Simplest Most ComplexOrganTissueOrganismCellOrgan System
Multicellular Organization:
We are all made of cells
Cells
Tissues
Organs
Organ
System
Cells:Basic unit of structure and function in
living things.Cells with a specific structure and
function and are found in multi-celled organisms.
Examples: skin cells, blood cells, brain cells, bone cells, liver cell, nerve cells, muscle cells, etc.
Brain cells
Blood cells
Liver cells
Tissues:
Group of similar cells that carry out a specific function.
Examples: epithelium connective muscle nervous
Tissues:
Tissues Continued:
Epithelium – sheets of closely packed cells that cover surfaces
Connective – loosely scattered cells to support and link together other tissues
Muscle – pull against one anotherNervous – transmitting messages
rapidly
Organs:
Several types of tissues that interact to perform a specific function.
Examples: stomach, kidney, liver
Organs Continued:
The stomach has muscular, epithelial, connective, and nervous tissue.
All but the simplest animals have organs.
Organ Systems:
Groups of organs that work together to perform a set of related tasks.
Examples: digestive, respiratory, circulatory
Organ Systems
Organ Systems Continued:
Mouth, esophagus, stomach, and intestines make up the digestive system.
Each organ performs a specific function in food digestion.
Organ systems interact with other systems like the respiratory system which supplies oxygen to cells to digest food.