Body Systems Review Flashcards
What is the Hierarchy of Structures?
When trillions of specialized animal cells live and work together as part of a larger group of cells that can make up the body of an animal
What are the levels of organization in the body?
- Cellular level heart muscle cell
- Tissue level heart muscle tissue
- Organ level heart
- Organ system level circulatory system
- Organism level deer
What are the levels of organization from largest to smallest?
- Biomes
- Communities
- Populations
- Organisms
- Organ Systems
- Organs
- Tissues
- Cells
- Organelles
- Molecules
- Atoms
Why does our body work?
Because of the interactions that happen between organs and organ systems.
What is an example of our body working because of the interactions that happen between organs and organ systems?
For example, the heart helps to regulate blood flow throughout the body. The blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells.
What are tissues when it comes to cells?
A collection of similar cells that perform a specific function.
What are organs when it comes to cells and tissues?
2 or more types of tissue that work together to perform a complex life function.
What are organ systems when it comes to cells, tissues, and organs?
A system of 1 or more organs and structures that work together to perform a major vital body function.
What are the four major types of tissues?
Epithelial, connective, muscle and nerve.
What is an example of an epithelial tissue?
Skin lining of digestive system.
What is a description of an epithelial tissue?
A thin sheet of tightly packed cells that covers body surfaces and lines, internal organs, and body cavities.
What is the function of an epithelial tissue?
Covers body surfaces to protect from dehydration.
What is an example of a connective tissue?
Bone tendons blood.
What is a description of a connective tissue?
Various types of cells and fibres held together by a matrix.
What is the function of a connective tissue?
Supports insulation.
What is an example of a muscle tissue?
To surround digestive tract, bones, and heart.
What is a description of a muscle tissue?
A group of specialized tissues containing proteins that can contract and enable the body to move.
What is the function of a muscle tissue?
Movement.
What is an example of a nerve tissue?
Brain nerves in sensory organs.
What is a description of a nerve tissue?
Long, thin cells that conducts electrical signals from one part of the body to one another.
What is the function of a nerve tissue?
To conduct electrical signals throughout the body.
What is the digestive system?
It breaks down your food so all your cells can receive nourishment. It also gets rid of solid wastes that your body does not use.
What is the circulatory system?
It is responsible for moving the body’s blood supply about 1,000 times each day. This is about 5000 quarts of blood each day.
What is the respiratory system?
It controls the oxygen entering and the carbon dioxide leaving our body. We do this by breathing.
