Human Body

Infections are caused by:

• mutations

• microorganisms

• toxic substances

• climate change

The kidneys, which remove dissolved wastes from blood, are organs of the:

• endocrine system

• excretory system

• skeletal system

• nervous system

What is the main function of the circulatory system?

• secrete enzymes

• digest protiens

• produce hormones

• transport material

When a person breathes, the lungs absorb oxygen, which is used by the cells to carry out the process of:

• respiration

• secretion

• photosynthesis

• excretion

The structures shown are primarily involved in:

• transporting blood

• producing sex cells

• removing wastes

• breaking down food

Kidneys collect waste and sends it to the bladder.

What two systems are involved?

• immune and respiratory

• circulatory and excretory

• skeletal and nervous

• digestive and circulatory

The following are functions of several organs

nose - moistens and filters air

lungs - gas exchange

diaphragm - muscle that controls air intake

WHICH HUMAN BODY SYSTEM PERFORMS THESE FUNCTIONS?

• skeletal

• digestive

• circulatory

• respiratory

Which two body systems most directly cause the arm to bend?

• skeletal and muscular

• reproductive and endocrine

• respiratory and excretory

• nervous and digestive

Which human body systems are shown?

• nervous

• digestive

• circulatory

• respiratory

Which pathway do most nutrients take after a person bites food?

• digestive-->circulatory-->body cells

• circulatory-->body cells-->digestive

• digestive-->body cells-->circulatory

• circulatory-->digestive-->body cells