Body Organization
What is the smallest unit of life?
A. Organ
B. Tissue
C. Cell
D. Organ system
C. Cell
What is an organ system?
A. One cell performing a job
B. Several organs working together to perform functions
C. A group of similar cells
D. A single organ working alone
B. Several organs working together to perform functions
Which organ system breaks down food so the body can absorb nutrients?
A. Respiratory system
B. Digestive system
C. Nervous system
D. Skeletal system
B. Digestive system
Which organ system includes the skin, hair, and nails?
A. Endocrine system
B. Skeletal system
C. Integumentary system
D. Circulatory system
C. Integumentary system
What is the main job of the brain?
A. Absorb nutrients
B. Control and coordinate many body activities
C. Filter blood to make urine
D. Pump blood
B. Control and coordinate many body activities
What are the levels of body organization from smallest to largest?
A. Organ → cell → tissue → organ system
B. Cell → tissue → organ → organ system
C. Tissue → organ system → cell → organ
D. Cell → organ → tissue → organ system
B. Cell -> Tissue -> organ -> organ system
Which sequence correctly describes how the human body is organized?
A. Cells → tissues → organs → organ systems
B. Tissues → cells → organ systems → organs
C. Organs → tissues → cells → organ systems
D. Organ systems → cells → tissues → organs
A. Cells → tissues → organs → organ systems
Which organ system supports the body and protects organs?
A. Muscular system
B. Endocrine system
C. Skeletal system
D. Digestive system
C. Skeletal system
Which organ system produces hormones that help regulate body processes?
A. Endocrine system
B. Digestive system
C. Muscular system
D. Respiratory system
A. Endocrine system
What do the kidneys do?
A. Break down food
B. Help the body move
C. Filter wastes and extra water from the blood
D. Take in oxygen
C. Filter wastes and extra water from the blood
What is a tissue?
A. A group of organs working together
B. A group of similar cells working together
C. A single cell
D. The entire human body
B. A group of similar cells working together
Which level of organization comes directly after tissue?
A. Cell
B. Organ
C. Organ system
D. Organism
B. Organ
Which organ system helps your body move?
A. Muscular system
B. Respiratory system
C. Urinary system
D. Circulatory system
A. Muscular system
Which organ system helps the body fight infections and disease?
A. Skeletal system
B. Immune/lymphatic system
C. Muscular system
D. Digestive system
B. Immune/lymphatic system
Where are most nutrients absorbed from digested food?
A. Stomach
B. Small intestine
C. Large intestine
D. Esophagus
B. Small intestine
What is an organ?
A group of different tissues working together
B. A group of identical cells only
C. A group of organ systems
D. A single tissue
A. A group of different tissues working together?
Which organ system allows you to breathe and take in oxygen?
A. Digestive system
B. Skeletal system
C. Respiratory system
D. Nervous system
C. Respiratory system
Which organ system controls responses to information from the environment using the brain, spinal cord, and nerves?
A. Digestive system
B. Nervous system
C. Skeletal system
D. Respiratory system
B. Nervous system
What is the main job of the heart?
A. Break down food
B. Filter urine
C. Pump blood
D. Control thoughts
C. Pump blood
What is one important job of the skeleton?
A. Produce digestive enzymes
B. Exchange gases
C. Support the body and protect organs
D. Pump blood
C. Support the body and protect organs
Which is an example of an organ?
A. A red blood cell
B. Muscle tissue
C. The heart
D. The circulatory system
C. The heart
Which organ system pumps and transports blood throughout the body?
A. Circulatory system
B. Muscular system
C. Digestive system
D. Integumentary system
A. Circulatory system
Which organ system removes wastes and extra water from the blood to produce urine?
A. Urinary system
B. Muscular system
C. Respiratory system
D. Integumentary system
A. Urinary system
What is the main job of the lungs?
A. Exchange oxygen and carbon dioxide
B. Pump blood
C. Digest proteins
D. Produce urine
A. Exchange oxygen and carbon dioxide
Which two organ systems work together to deliver oxygen to your muscles?
A. Digestive and skeletal
B. Respiratory and circulatory
C. Nervous and digestive
D. Urinary and muscular
B. Respiratory and circulatory