GEN BIO: LEVELS OF ORGANIZATION Flashcards
1
Q
Tissues
A
Cells with common structure and function
2
Q
What are tissues four main categories?
A
- muscle tissue (skeletal, cardiac, and smooth)
- epithelial tissue (skin, the lining of organs)
- nervous tissue (neurons)
- connective tissue (cartilage, blood, fat, bone)
3
Q
What makes up an organ?
A
Various tissues are combined into an organ, which performs a specialized function in the body
(ex. an organ involved in digestion and made up of three types of tissues is the stomach)
4
Q
Organ System
A
Made up of a number of organs working together to carry out a major function
(ex. the circulatory system includes many organs, such as the heart, blood vessels, spleen, tonsils, and lymph nodes. These organs work together to circulate and deliver necessary products throughout the body)
5
Q
Organism
A
The highest level of organization is the organism itself (ex. the human body)