Topic 3 - Human Body Systems & Levels of Organization ('21-'22)

Front

What is the simplest level of organization in a human being?

Back

Cells.

Front

What is a group of similar cells that perform a special function called?

Back

Tissue.

Front

What is the function of red blood cells in the human body?

Back

They carry oxygen throughout the body.

Front

What is the role of nerve cells in the heart?

Back

They direct the rhythm of the heart muscle cells.

Front

What is the definition of a tissue in the context of human body systems?

Back

A group of similar cells that work together to perform a specific function.

Front

What are the four main types of tissues in the human body?

Back

Epithelial, connective, muscle, and nervous tissue.

Front

How do muscle cells in the heart work together?

Back

They beat in unison to push blood.

Front

What is an organ?

Back

A structure made up of different types of tissues that work together to perform a specific function.

Front

Can you name an example of an organ in the human body?

Back

The heart.

Front

What is the relationship between cells, tissues, and organs?

Back

Cells make up tissues, and tissues make up organs.