ch 24 quiz

When we inhale, air moves in through the mouth or nose and next moves into the

*pharynx* Air moves from the mouth or nose into the pharynx. From the pharynx air enters the larynx, trachea, bronchi, bronchioles, and alveoli.

chemoreceptors

You are eating dinner and enjoying both the taste and smell of your meal.

thermoreceptors

You get into the bathtub and realize the water is moderately cold.

mechanoreceptors

You hear thunder during a storm.

photoreceptors

You wake up in the morning and enjoy the sight of a beautiful sunrise.

The blood vessels that carry blood away from the heart are:

Arteries Arteries carry blood away from the heart to body tissues. 17.2 Spreading the Effects of Smoke: The Cardiovascular System

pain receptors

You are cleaning your bathroom with undiluted bleach, which causes a burning sensation in your nose.

If the glomerulus remained intact but other capillaries were not in close physical contact with nephrons, which of the following functions would NOT be lost?

filtration of plasma

You accidentally rest your hand on a hot stove. This sensory information will ultimately be relayed to the appropriate part of your brain by the

thalamus.

Large blood vessels that return deoxygenated blood from the legs to the heart are

veins.

Which of the following conditions results from the buildup of scar tissue on the lungs, which makes the lungs less elastic?

Emphysema Emphysema results from the merging of alveoli sacs, which then become surrounded by scar tissue. The buildup of scar tissue makes the lungs less elastic, meaning that the passive process of exhalation is ineffective. 17.1 Effects of Smoke on the Respiratory System

All of the following components of blood are produced in the bone marrow EXCEPT:

Plasma Plasma is the liquid portion of blood; it is not formed in the bone marrow. 17.2 Spreading the Effects of Smoke: The Cardiovascular System

What best explains the purpose of the valves found along the venous side of the systemic circuit?

Valves prevent the blood from reversing direction within veins when pressures are low. The venous circulation has one-way valves that help keep blood flow unidirectional, back to the heart.

Air leaves the lungs as

a lower concentration of oxygen and a higher concentration of carbon dioxide than outside air. Air entering the lungs has a high concentration of oxygen and a low concentration of carbon dioxide. Air exiting the lungs has a high concentration of carbon dioxide and a low concentration of oxygen.

Which of the following sensory receptor types is NOT found in humans?

magnetoreceptors

Valuable solutes, such as sugar and small proteins, that enter a nephron are ________ by capillaries.

reabsorbed

The area of the brain that filters and sorts signals from the spinal cord also determines which signals require an action without awareness and which signals need to be sent to the conscious perception centers. This area of the brain is known as the

thalamus The thalamus processes and directs incoming sensory information. The cerebrum processes the information. The limbic center controls emotions and the reticular formation regulates consciousness.

Which of the following structures has the smallest diameter?

the bronchioles