1. What is homeostasis and why is it important for human

physiology? (Select one)

a) Homeostasis is the ability of the body to maintain a

constant internal environment despite external changes. It

is important because it allows the body to function

optimally and prevent diseases.

b) Homeostasis is the ability of the body to adapt to

external changes and maintain a dynamic equilibrium. It is

important because it allows the body to cope with stress

and challenges.

c) Homeostasis is the ability of the body to regulate its

temperature, pH, blood pressure, and other variables. It is

important because it allows the body to avoid extremes and

maintain balance.

d) Homeostasis is the ability of the body to respond to

stimuli and produce appropriate actions. It is important

because it allows the body to communicate and coordinate

its functions.

Answer: A. Homeostasis is the ability of the body to

maintain a constant internal environment despite external

changes. It is important because it allows the body to

function optimally and prevent diseases. Rationale:

Homeostasis is defined as the maintenance of a relatively

stable internal environment in an organism. It is essential

for survival and health, as it ensures that the cells and

tissues can perform their functions properly.

2. Which of the following is an example of a negative

feedback loop in human physiology? (Select one)