Summary

🧠 ULTIMATE HUMAN ANATOMY STUDY
GUIDE
📚 College-Level | Beginner to Intermediate
🧬 1. INTRODUCTION TO ANATOMY & PHYSIOLOGY
What is Anatomy?

Anatomy is the study of the structure of the human body and how its parts are organized.

What is Physiology?

Physiology is the study of how those body parts function and work together.




Levels of Organization

1.​ Chemical Level – atoms & molecules
2.​ Cellular Level – cells (basic unit of life)
3.​ Tissue Level – groups of cells
4.​ Organ Level – structures with specific functions
5.​ Organ System Level – groups of organs
6.​ Organism Level – entire human body




Homeostasis

●​ The body's ability to maintain a stable internal environment
●​ Example: body temperature (~98.6°F / 37°C)




🔬 2. BODY PLANES & DIRECTIONS
Anatomical Position

, ●​ Standing upright
●​ Arms at sides
●​ Palms facing forward




Directional Terms

●​ Superior – above
●​ Inferior – below
●​ Anterior – front
●​ Posterior – back
●​ Medial – toward midline
●​ Lateral – away from midline




Body Planes

●​ Sagittal Plane – divides left/right
●​ Frontal Plane – divides front/back
●​ Transverse Plane – divides top/bottom




🧫 3. CELLS & TISSUES
Cell Structure

●​ Nucleus – controls cell
●​ Cytoplasm – fluid inside cell
●​ Cell membrane – controls entry/exit




Types of Tissue

1. Epithelial Tissue

●​ Covers surfaces
●​ Lines organs
●​ Functions: protection, absorption

2. Connective Tissue