- Circulatory System
- Heart
- Pumps blood
- Four chambers
- Valves
- Blood Vessels
- Arteries
- Carry oxygenated blood away from heart
- Thick, elastic walls
- Veins
- Carry deoxygenated blood to heart
- Thin walls, valves
- Capillaries
- Exchange gases, nutrients, wastes
- Thin walls for diffusion
- Blood
- Plasma
- Liquid portion
- Carries cells, proteins, nutrients
- Red Blood Cells (RBCs)
- Carry oxygen
- Contain hemoglobin
- White Blood Cells (WBCs)
- Fight infection
- Part of immune system
- Platelets
- Clot blood
- Prevent bleeding
- Functions
- Transport oxygen and nutrients
- Remove carbon dioxide and wastes
- Maintain homeostasis
- Support immune response
- Interactions with Other Systems
- Respiratory System
- Exchanges oxygen and carbon dioxide in lungs
- Digestive System
- Absorbs nutrients into bloodstream
- Excretory System
- Removes metabolic wastes via kidneys
- Immune System
- WBCs defend against pathogens
- Endocrine System
- Transports hormones to target organs
- Nervous System
- Regulates heart rate and blood pressure
- Key Terms
- Oxygenated blood
- Deoxygenated blood
- Pulmonary circulation
- Systemic circulation
- Blood pressure
- Pulse
Parent Tip: Review the logic above to help your child master the concept of human body review worksheet.
