Which system brings in oxygen (O₂) and takes out carbon dioxide (CO₂) ?

• digestive system

• respiratory system

• nervous system

• immune system

Which system protects the body from foreign pathogens (invaders) like viruses, bacteria, and fungi?

• immune system

• endocrine system

• nervous system

• skeletal system

Which system provides support for the body, protects vital organs like the brain and lungs, and is where new blood cells are made?

• nervous system

• respiratory system

• circulatory system

• skeletal system

Which system has glands that produce hormones like testosterone, estrogen, and adrenaline (epinephrine)?

• digestive system

• excretory system

• endocrine system

• immune system

Which system is responsible for thinking, emotions, and controlling movement?

• reproductive system

• muscular system

• nervous system

• integumentary system

Which system includes your skin, hair, and sweat glands?

• integumentary system

• circulatory system

• digestive system

• endocrine system

Which system is blood a part of and is also responsible for pumping blood around the body?

• digestive system

• respiratory system

• circulatory system

• integumentary system

Which system is different between males and females and is needed to make babies?

• nervous system

• reproductive system

• immune system

• integumentary system

Which system breaks down food and absorbs the nutrients?

• respiratory system

• endocrine system

• excretory system

• digestive system

Tags

NGSS.MS-LS1-7

Which system connects to the bones to move them?

• digestive system

• circulatory system

• skeletal system

• muscular system