Transcript Homeostasis Review

Positive
• When a baby suckles milk from their mother, a
nerve in the mother’s nipple sends a signal to
her brain which then tells her body to produce
more milk.
Negative
• If your blood sugar gets too high or too low,
your pancreas releases a chemical (insulin) to
return the blood sugar to normal.
Positive
• Rapid growth during puberty causes your
body to release more and more growth
hormones.
Positive
• The body senses an infection and increases
the production of white blood cells.
Negative
• As you get dehydrated, your blood becomes
thicker and harder to pump. Your kidneys will
stop producing urine, and the water from the
urine is used to thin your blood.
Negative
• The hypothalamus, which monitors the body
temperature, detects a drop in normal body
temperature (36.5 oC or 98.6 oF). It signals
various muscles to shiver to increase body
temperature.
Positive
• When you get cut, your skin releases
chemicals to activate platelets to stop
bleeding. Platelets then release more
chemicals to activate even more platelets to
help stop bleeding.
Negative
• If the calcium in your blood decreases, a gland
will sense the decrease and send a chemical
message to your bones so it releases calcium
back into the blood.
Homeostasis & the Systems
• Study the chart from your workbook (or page
15 in textbook)