1. Introduction to Human Anatomy Flashcards
What are the primary levels of organization in the human body?
Cells, Tissues, Organs, Systems
These levels represent the complexity of the human body from the smallest unit to a complete organism.
What is the basic unit of life?
Cells
Cells are where all physiological functions originate.
What are the four primary types of tissues in the human body?
- Epithelial
- Connective
- Muscle
- Nervous
These tissues perform specific functions and are composed of similar cells.
What defines an organ?
Structures composed of two or more types of tissues that work together
For example, the heart is an organ made up of different tissue types.
What is a system in the context of the human body?
Groups of organs that perform related functions
An example is the circulatory system.
What is homeostasis?
The stable, balanced state necessary for survival
Homeostasis is maintained through the interaction of body systems.
How do the musculoskeletal and nervous systems interact?
The nervous system controls and coordinates body activities, initiating and controlling movement
This ensures actions are precise and coordinated.
What role do the circulatory and respiratory systems play together?
They supply oxygen and nutrients to tissues and remove waste products
The respiratory system brings oxygen into the body for distribution by the circulatory system.
What is the function of the digestive system?
To break down food into nutrients for energy, growth, and repair
This system works in conjunction with the excretory system.
What is the role of the excretory system?
To remove waste products from the blood and maintain fluid balance
It includes the kidneys and urinary system.
Fill in the blank: The human body is composed of several levels of organization, including _______.
[Cells, Tissues, Organs, Systems]
True or False: The nervous system functions independently of the musculoskeletal system.
False
The nervous system interacts with the musculoskeletal system to control movements.
What is the primary purpose of the circulatory system?
To transport nutrients and oxygen throughout the body
It works closely with the respiratory system.
