Body Systems Overview — TEAS & HESI Cheat Sheet
The 11 systems & what they do
👤 By the CinnaEntry Content Team
🕐 Updated 2026-09-06
🏷️ TEAS Science
🔖 Free to read, print, and share
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Use this one-page guide to lock in Body Systems Overview for the ATI TEAS 7 and HESI A2. Keep it handy during review and on exam day.
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📒 The 1-minute cheat sheet
📌 Key Systems
- Circulatory — heart & vessels move blood, O₂, nutrients
- Respiratory — trachea → bronchi → alveoli; gas exchange
- Digestive — breaks down food, absorbs nutrients (villi)
- Nervous — brain, spinal cord, neurons; control & signals
- Skeletal — support, protects organs, makes blood, stores Ca²⁺
- Muscular — movement, posture, heat
- Endocrine — hormones (thyroid = metabolism, pancreas = glucose)
- Urinary — kidneys filter blood (nephron), balance fluids
📌 Heart Flow
- Body → RA → RV → lungs → LA → LV → body
- Left ventricle = thickest; pumps oxygenated blood to the body
✨Quick Tip
Focus on the highlighted terms — those are what the TEAS and HESI test most on body systems overview.
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