Human Physiology

Introduction to the field of human physiology

Introduction Living systems possess a special

organization Physiology studies two related

aspects of that organization: structure and function

For this reason physiology is closely related to Anatomy and Biochemistry

Homeostasis

This is the name for the processes which keep the condition and environment of the tissues in the proper condition to sustain life.

Cells

Cells are the basic units of life they make up tissues and organs

in the body Cells can only come from other

cells (The CELL THEORY)

Tissues

muscular nervous epithelial connective

Glands

Epithelial tissue Specialized for secretion Exocrine glands: secrete through

ducts to the outside of the body Endocrine glands: ductless glands

which produce hormones which are released into the blood

Organs

Two or more types of primary tissue

Organized to perform a particular function

Examples of Organs

Stomach Heart Liver Kidney Brain etc

Homeostasis: The Essence of Life Cells live in a fairly constant

environment The cells, in turn, constitute the

tissues which provide that environment

Body systems Homeostasis

Cells

Body Systems Nervous Endocrine Immune Circulatory Muscle/skeletal Integument Respiratory Urinary Digestive Reproductive

Failure of Homeostasis

Often leads to sickness and eventually death

Thanks for Attention!