What does homeostasis maintain?

A stable internal environment around a set point

In a negative feedback loop, the response to a change...

Opposes the change and returns the variable toward its set point

Fast electrical impulses along neurons

Hormones travel and act more slowly and remain in the blood

A large surface area and thin walls

They are too big to pass across the gut wall into the blood

They bind to a specific pathogen and mark it for destruction

Memory cells let the body make the right antibodies faster and in greater number

The respiratory and circulatory systems

The organ systems depend on and cooperate with one another to keep the organism functioning

12questions. Pick an answer and you'll see why right away.

What does homeostasis maintain?
In a negative feedback loop, the response to a change...
Which hormone lowers blood glucose after a meal?
What type of signal does the nervous system use?
Why does an endocrine (hormonal) response usually last longer than a nervous response?
By what process does oxygen move from an alveolus into the blood?
Which features make the alveoli efficient for gas exchange?
Why must large food molecules be broken down before absorption?
How do antibodies help defend the body?
Why is a second infection by the same pathogen usually milder?
During exercise, which two systems cooperate most directly to deliver oxygen to muscles?
Why is the body described as a system of interacting subsystems?