Hierarchy, Organization, and Organ Systems

Which of the following is the smallest unit of all living things?

• Organ

• Tissue

• Cell

• Organ System

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The heart and blood vessels are the primary organs of the ________ system.

• Lymphatic

• Respiratory

• Integumentary

• Cardiovascular

The skeletal muscles that contract and shorten to move the bones form the ________ system.

• Muscular

• Skeletal

• Digestive

• Endocrine

The ________ system rids the body of indigestible food residue in feces while the ________ system removes nitrogen-containing metabolic waste in urine.

• urinary; digestive

• cardiovascular; urinary

• digestive; urinary

• reproductive; disgestive

Which of the following levels of organization is inclusive of all others?

• Chemical

• Organ System

• Organ

• Cellular

The major organs of the cardiovascular system are the ________.

• Skeletal Muscles

• Brain, Spinal Cord, Nerves

• Heart and Blood Vessels

• Bones, Cartilage, and Ligaments

The main function of the respiratory system is to ________.

• transport oxygen, nutrients, and wastes to and from body cells and tissues

• produce sperm and eggs

• control body activities through hormones released into the blood

• supply the body with oxygen and remove carbon dioxide

The system that controls and coordinates the body using hormones is the ________.

• endocrine system

• skeletal system

• nervous system

• integumentary system

Which two organ systems include the pancreas?

• urinary and respiratory systems

• digestive and respiratory systems

• digestive and endocrine systems

• endocrine and respiratory systems

Which system covers the external surface of the body and protects deeper tissues?

• lymphatic system

• nervous system

• endocrine system

• integumentary system