2.3

Question 1

Homeostasis

Answer 1

Tendency of an organism to maintain a steady state; an acceptable range of physical and chemical conditions in which body cells tissues and organs can operate efficiently

Question 2

Blood pressure

Answer 2

The measure of the pressure of blood against the walls of the arteries
Pressure when contracts is systolic
Pressure when relaxes diastolic

Question 3

Hormones

Answer 3

Chemicals that carry messages through the body to regulate cells tissues or organs