Thermoregulation Body
8. Thermoregulation is the process the body uses in order to keep the body at a regular temperature, which is about 37 degrees Celsius.
9. The hypothalamus contains body temperature sensors.
10. a. Two mechanisms the body uses to cool are dilating blood vessels and skin and making sweat glands produce more cooling sweat.
b. Two mechanisms the body uses to heat itself are constricting blood vessels and skin and making muscles shiver to produce heat.
11. a. The stimulus is the raised body heat, and the response is to cool the body by sweating or dilating blood vessels and skin. The signal is what the hypothalamus sends when it detects high body heat.
b. This feedback loop is negative, because it is lowering the body heat from above 37 degrees to about 37 degrees. …show more content…
12.
a. The stimulus is the lowered body heat, and the response is to heat the body by constricting blood vessels and skin. the signal is what the hypothalamus sends when it detects lowered body heat.
b. This feedback loop is positive, because it is raising the body heat from below 37 degrees to about 37 degrees.
13. a. It could be helpful, as a positive loop could keep you doing something that keeps you in homeostasis, such as eating to gain energy when you are running low on energy.
b. It could be helpful, as a negative loop could keep you from doing something that could get you out of homeostasis, such as reducing your alcohol level when they are too high.
14. The signal is the baby pushing against the cervix, and the response is the uterine walls contracting.
15. Oxytocin is the hormone that makes the uterine walls contract.
16. When the intensity of the contractions increase, the stimulus (the baby pushing against the cervix) will also increase.
17. Childbirth is a positive feedback system because it continuously increases the stimulus until the baby is born.
18. The child being pushed out of the cervix will stop the stimulus and thus stop the feedback
loop.
19 a. The stimulus is the skin or blood vessel being torn, and the response is the platelets being summoned to plug the hole. This is a positive feedback loop.
b. The stimulus is the loss in blood pressure, and the response is the kidney reabsorbing water to raise the blood pressure to normal amounts. This is a positive feedback loop.
c. The stimulus is the lowered pH value in the blood caused by increased CO2, and the response is the diaphragm and the heart increasing respiration to bring the pH value to normal by getting rid of the extra CO2. This is a negative feedback loop.
9. The hypothalamus contains body temperature sensors.
10. a. Two mechanisms the body uses to cool are dilating blood vessels and skin and making sweat glands produce more cooling sweat.
b. Two mechanisms the body uses to heat itself are constricting blood vessels and skin and making muscles shiver to produce heat.
11. a. The stimulus is the raised body heat, and the response is to cool the body by sweating or dilating blood vessels and skin. The signal is what the hypothalamus sends when it detects high body heat.
b. This feedback loop is negative, because it is lowering the body heat from above 37 degrees to about 37 degrees. …show more content…
12.
a. The stimulus is the lowered body heat, and the response is to heat the body by constricting blood vessels and skin. the signal is what the hypothalamus sends when it detects lowered body heat.
b. This feedback loop is positive, because it is raising the body heat from below 37 degrees to about 37 degrees.
13. a. It could be helpful, as a positive loop could keep you doing something that keeps you in homeostasis, such as eating to gain energy when you are running low on energy.
b. It could be helpful, as a negative loop could keep you from doing something that could get you out of homeostasis, such as reducing your alcohol level when they are too high.
14. The signal is the baby pushing against the cervix, and the response is the uterine walls contracting.
15. Oxytocin is the hormone that makes the uterine walls contract.
16. When the intensity of the contractions increase, the stimulus (the baby pushing against the cervix) will also increase.
17. Childbirth is a positive feedback system because it continuously increases the stimulus until the baby is born.
18. The child being pushed out of the cervix will stop the stimulus and thus stop the feedback
loop.
19 a. The stimulus is the skin or blood vessel being torn, and the response is the platelets being summoned to plug the hole. This is a positive feedback loop.
b. The stimulus is the loss in blood pressure, and the response is the kidney reabsorbing water to raise the blood pressure to normal amounts. This is a positive feedback loop.
c. The stimulus is the lowered pH value in the blood caused by increased CO2, and the response is the diaphragm and the heart increasing respiration to bring the pH value to normal by getting rid of the extra CO2. This is a negative feedback loop.