How does the body monitor its core temperature?

A.
Nerve cells in the skin feed the information to the hypothalamus.

B.
The pituitary gland in the brain tracks the temperature of the blood.

C.
Nerve cells monitor the temperature of the hypothalamus.

D.
Core blood temperature alters the speed of the chemical reactions in the pituitary gland.

E.
Core blood temperature alters the speed of nerve cells in the hypothalamus.

How does ADH work and what does it do?

A.
It binds to the collecting tubules in the kidney, opening pores to allow water to flow back out of the kidney into the blood.

B.
It binds to blood cells, making them more porous to water so it more easily diffuses back into them and is not lost in urine filtration.

C.
It binds to water molecules, making them too large to diffuse out of the blood stream, retaining water when the body needs it.

D.
It binds to nerve cells in hypothalamus, signaling that the body is dehydrated and should retain water.

E.
It binds to the kidney tubules, making them less porous to water so less water filters out.

How does a fan help cool you off?

A.
Moving air is sort of the opposite of insulation.

B.
Conduction of heat away from the body increases.

C.
The moving air decreases evaporation of sweat.

D.
The moving air increases convection of heat to a cooler environment.

E.
The moving air minimizes radiative heat gain.

Question

How does the body monitor its core temperature?

	A.	Nerve cells in the skin feed the information to the hypothalamus.
	B.	The pituitary gland in the brain tracks the temperature of the blood.
	C.	Nerve cells monitor the temperature of the hypothalamus.
	D.	Core blood temperature alters the speed of the chemical reactions in the pituitary gland.
	E.	Core blood temperature alters the speed of nerve cells in the hypothalamus.

How does ADH work and what does it do?

	A.	It binds to the collecting tubules in the kidney, opening pores to allow water to flow back out of the kidney into the blood.
	B.	It binds to blood cells, making them more porous to water so it more easily diffuses back into them and is not lost in urine filtration.
	C.	It binds to water molecules, making them too large to diffuse out of the blood stream, retaining water when the body needs it.
	D.	It binds to nerve cells in hypothalamus, signaling that the body is dehydrated and should retain water.
	E.	It binds to the kidney tubules, making them less porous to water so less water filters out.

How does a fan help cool you off?

	A.	Moving air is sort of the opposite of insulation.
	B.	Conduction of heat away from the body increases.
	C.	The moving air decreases evaporation of sweat.
	D.	The moving air increases convection of heat to a cooler environment.
	E.	The moving air minimizes radiative heat gain.

Unlock all answers

	A.	Because the brain enables the body's response to temperature changes
	B.	Because deep inside the brain is considered the body's core
	C.	Because temperature changes happen most quickly in the brain
	D.	Because the brain works best at the correct temperature
	E.	Because temperature changes affect the brain first

	A.	If blood is too concentrated, the hypothalamus nerve cells will contain too much salt.
	B.	If blood is too concentrated, the hypothalamus it registers dehydration in its own cells.
	C.	If blood is too concentrated, the hypothalamus registers ADH in the blood.
	D.	If blood is too concentrated, nerve cells in the hypothalamus it has nerve cells that lose water by osmosis and fire more slowly.
	E.	If blood is too concentrated, in the hypothalamus it registers that its cells are losing water by osmosis.