Unit 6 Review: Human Body Systems

What is the basic unit of structure and function of an organism?

• Tissue

• Nucleus

• Cell

• Organ

A group of organs that function together to perform a certain role in the body is called a

• cell

• collection

• organ system

• tissue

True or False: Cells in stomach tissue are different from cells in bone tissue because they have to do different jobs.

• True

• False

Which of the following is the MOST complex?

• tissue

• organ

• organ system

• organism

What is tissue?

• An individual cell that works to perform a particular function in the body.

• A group of cells that work together to perform the same function.

• An individual organ that works to perform a particular function in the body.

• A group of organ systems that work together to perform the same function.

The process by which an organism's internal environment is kept stable in spite of changes in the external environment is called:

• healing

• digestion

• homeostasis

• respiration

Which of the following actions is NOT part of your body maintaining homeostasis?

• sweating when you are hot

• breathing harder when you exercise

• smiling when you are happy

• going to the bathroom

Why would tears be considered part of your immune system?

• Crying can slow the heart rate.

• Tears wash pathogens (germs) out of the eyes.

• Tears are a response to emotional or physical pain.

• Crying can cause the release of hormones that make people feel better.

How does the skeletal system work with the circulatory system?

• Bones absorb blood cells.

• Bones produce blood cells.

• Bones produce hormones that arteries carry to the cells.

• Veins and arteries attach to bones to allow for movement.

How does the skeletal system work with the nervous system?

• The skeletal system helps protect the spinal cord and brain.

• The skeletal system helps the nerves send signals

• The skeletal system helps release chemicals in the brain.

• The skeletal system helps the spinal cord receive signals.