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ocesses. Features: Major endocrine glands (pituitary, thyroid, adrenal) Hormone functions and feedback loops 7. Circulatory System Covers blood, heart, and vascular structures. Features: Heart anatomy and blood flow Blood components and functions Circulatory pathologies 8. Respiratory System De

deductible) Rent: $50,000 (deductible) Interest income: $10,000 (included in gross income) Step 2: Adjustments for Tax Purposes Equipment depreciation: use MACRS method, so depreciation deduction is $20,000