Understanding Human Body Mechanics

Which of the following correctly describes the hierarchical organization of the human body from simplest to most complex?

• Organ, Tissue, Cell, Organ System

• Cell, Tissue, Organ, Organ System

• Tissue, Cell, Organ System, Organ

• Organ System, Organ, Tissue, Cell

Which system in the human body is primarily responsible for transporting nutrients, gases, and wastes?

• Digestive System

• Respiratory System

• Circulatory System

• Nervous System

Identify the principle of body mechanics that involves maintaining a stable center of gravity.

• Balance

• Flexibility

• Strength

• Endurance

Which of the following is a direct effect of regular exercise on the human body?

• Decreased bone density

• Increased muscle strength

• Reduced lung capacity

• Lowered metabolic rate

What is the primary function of the skeletal system?

• To produce hormones

• To protect internal organs

• To transport oxygen

• To digest food

Which body system is responsible for coordinating voluntary and involuntary actions?

• Endocrine System

• Nervous System

• Muscular System

• Integumentary System

How does proper posture benefit the human body?

• Increases stress on joints

• Enhances breathing efficiency

• Reduces blood circulation

• Weakens core muscles

Which of the following is a component of the respiratory system?

• Heart

• Lungs

• Liver

• Kidneys

What is the role of the muscular system in body mechanics?

• To provide structural support

• To facilitate movement

• To produce red blood cells

• To regulate body temperature

Which of the following best describes the effect of exercise on cardiovascular health?

• Decreases heart rate variability

• Increases blood pressure

• Improves heart efficiency

• Reduces blood vessel elasticity