Anatomy
The study of body structure
Physiology
The study of body function
Gross Anatomy
large structures, easily observable
Microscopic Anatomy
structures too small to be seen with the naked eye
levels of organization (smallest to largest)
atom, molecule, cell, tissue, organ, organ system, organism
What do atoms do?
combines to form molecules
What are cells made of?
molecules
what do tissues consist of?
similar types of cells
what are organs made up of?
different types of tissues
what is the organ system made up of?
One or more organs that work together
what is an organism made up of?
organ systems
What are the organ systems of the body?
⭐️ integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic, respiratory, digestive, urinary, reproductive
What does the integumentary system do?
• protects the body's internal environment from the external environment• senses pain, pressure, and temperature• regulates body temp• protects deep tissue (from injury)
What does the skeletal system do?
• provides muscle attachment • protects soft-tissue organs such as the ♥︎ + lungs• site of blood cell formation
What does the muscular system do?
• maintains postureproduces heat
What does the nervous system do?
• responsive to internal/external changes • activates muscle + glands
What does the endocrine system do?
• secretes hormones: growth, reproduction, metabolism
What does the cardiovascular system do?
pumps (from ♥︎) and transports blood: Oxygen, CO2, Nutrients, Wastes
What does the lymphatic system do?
Returns fluids that leaked from blood vessels back to blood, cleans blood
What does the respiratory system do?
takes in oxygen and eliminates carbon dioxide
What does the digestive system do?
• breaks down food• absorbs nutrients
What does the urinary system do?
• eliminates nitrogenous wastes • regulates water + electrolytes
What does the reproductive system do?
produces offspring• 🙆♀️ Testes produce SPERM + male hormones • 🙆♂️ Ovaries produce EGGS + female hormones
locomotion
the ability to move from place to place