Exam 1: The Human Body: an Orientation

What is a dynamic equilibrium of your internal environment termed?

Some of the nerve endings in the skin are sensitive to changes in temperature. They are part of a negative feedback mechanism regulating body temperature. These nerve endings represent a(n) __________in the negative feedback mechanism.

The dorsal body cavity is the site of which of the following?

What does the "principle of complementarity of structures and function" mean?

What broad term covers all chemical reactions that occur within the body cells?

The body cavities that protect the nervous system are located in the __________ cavity.

Positive feedback differs from negative feedback because __________ .

What can happen when the usual negative feedback mechanisms are overwhelmed and destructive positive feedback mechanisms take over?

A small family was traveling in its van and had a minor accident. The children in the back seats were wearing lap belts, but still sustained numerous bruises about the abdomen, and had some internal organ injuries. Why is this area more vulnerable to damage than others?

Which one of the following systems responds fastest to environmental stimuli?