- A student defined homeostasis as
“the condition in which the body approaches room temperature and stays
there.” Do you agree with this definition?
- The difference between negative and
positive feedback systems is that in negative feedback systems, the
response ____________ the original stimulus, but in positive feedback
systems, the response ___________ the original stimulus.
a)
Reverses; enhances
b)
Enhances;
reverses
- Most often, the nervous and
endocrine systems acting together or separately regulate homeostasis. The _________
system detects body changes and sends nerve impulses to counteract changes
in controlled conditions. The ____________system regulates homeostasis by
secreting ____________.
a)
Endocrine;
nervous; hormones
b)
Reproductive;
endocrine; saliva
c)
Nervous;
endocrine; hormones
d)
Skin; endocrine;
hormones;
e)
Nervous;
respiratory; mucus
- After labor begins the baby's head
puts pressure on the cervix, causing the cervix to stretch. This
stimulates stretch receptors the trigger the mother's hypothalamus to
release oxytocin, which increases the uterine contractions and pushes the
baby against the cervix. This causes the cervix to stretch farther and the
cycle continues.
a)
This is an
example of positive feedback
b)
This is an
example of negative feedback
- Body temperature regulation is an
example of positive feedback
a)
True
b)
False
- Most hormones are regulated by
negative feedback
a)
True
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