The process of surrounding, engulfing, and digesting invading organisms, worn out cells, and/or other debris in order to remove this unwanted material from the body is called:

The lower the pH:

Heartburn is due to:

Match the bones with their location.

The structure where urine is made is the:

Which plane describes across the body; when a person is standing, this direction is parallel with the horizon. The plane divides the body into superior and inferior sections.

Match the term with its description.  There are more descriptions than are needed.

Nutrients and wastes enter and leave the blood system at the level of the:

Students should find answers to all the study questions listed on the course modules. The answers to all the study questions are in the text or other provided readings. The study questions provided on the course site are for study purposes only.  Students are not expected to hand the study question answers in to be graded.

How did Ruth find out Walter hadn’t been going to work?