Homeostasis: Feedback Loops & Organ Systems

1. The maintenance of an organism's internal environment is called:

• A. Compensating 

• B. Balancing 

• C. Routine

• D. Homeostasis

2. The "normal" level in the body of a certain condition (i.e. body temperature is 98.6 degrees F)

• A. Set-point

• B. Stimulus

• C. Effector

• D. Range

3. An involuntary or unconscious response to stimuli is called a _ response.

• A. Behavioral

• B. Physiological

• C. Immune

• D. Trained

5. A muscle, gland, or organ that responds to a stimulus after receiving a message from the control (i.e. sweat alands) is called the _ (this is what makes the response happen).

• A. Receptor

• B. Sensor

• C. Control

• D. Effector

 _ Vasopressin is released from the pituitary gland to increase the reabsorption of water (prevents dehydration).

• behavioral (B)

• physiological (P)

_ Increased heart rate after exercise.

• behavioral (B)

• physiological (P)

A dog moving to shade on a hot day.

• behavioral (B)

• physiological (P)

Capillaries dilate after you run the mile.

• behavioral (B)

• physiological (P)

Putting on a sweater in room 241 (since the windows are always open).

• behavioral (B)

• physiological (P)