Human Body Systems

What is the correct hierarchical order of organization in the human body, starting from the most basic unit?

• Organ System, Organ, Tissue, Cell

• Cell, Tissue, Organ, Organ System

• Tissue, Cell, Organ System, Organ

• Organ, Organ System, Cell, Tissue

What is the actual color of human blood inside the body?

• Blue, turning red when exposed to oxygen.

• Always red, though the shade may vary with oxygen levels.

• Blue in veins and red in arteries.

• Green, appearing blue due to light reflection.

Where does the process of digestion primarily begin in the human body?

• Stomach

• Small Intestine

• Mouth

• Large Intestine

What is the primary role of hormones within the endocrine system?

• To break down food for nutrient absorption.

• To pump blood throughout the body.

• To act as messengers that bind to targets to cause an action.

• To filter waste products from the blood.

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Which of the following is NOT considered part of the integumentary system?

• Hair

• Nails

• Sebaceous glands

• Lymph nodes

What is the primary function of the lymphatic and immune system?

• Producing hormones for body regulation

• Coordinating voluntary and involuntary actions

• Protecting the body from pathogens

• Facilitating gas exchange in the lungs

Which type of muscle tissue is responsible for voluntary movements and is attached to bones?

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

• Involuntary muscle

What are the two main regions that make up the nervous system?

• Brain and spinal cord

• Central Nervous System and Peripheral Nervous System

• Neurons and Glia

• Voluntary and Involuntary systems