Anatomy Chapter 1 - Intro to anatomy

What is Anatomy?

The study of internal and external body structures and the relationships between these structures.

Microanatomy

Subdivisions of anatomy requiring a microscope to study, includes cytology and histology.

Cytology

The study of individual cells.

Histology

The study of tissues (groups of cells).

Gross Anatomy

The study of body structures that are visible to the eye, such as bones and organs.

Levels of Organization

Hierarchical arrangement from simple to complex: chemical, cellular, tissue, organ, organ system, and organism.

Chemical level

The most basic level of organization, consisting of atoms that combine to form molecules.

What forms the basic unit of structure and function in the body?

Cells.

Tissue level

A group of structurally similar cells that perform a common function.

What are the major levels of organization in the human body?

Chemical, cellular, tissue, organ, organ system, organism.

Organ level

Two or more tissues working together for a common function.

What is the function of the stomach?

Digestion.

Organ system level

Several related organs working together to accomplish a common purpose.

What is the function of the respiratory system?

Respiration.

Hierarchy in Levels of Organization

Each level contains the components of the levels below it.