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Chapter 21 Quiz 2
Final Practice
20
Biology
05/10/2011

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Term
When blood leaves the right ventricle of the mammalian heart, to which location does it flow next?
Definition
the lungs
Term
In human lungs, the windpipe branches into two bronchi. The bronchi then branch several times to become:
Definition
bronchioles.
Term

The lymphatic system is a fluid transport system vital for human health. Instead of blood, this system transports _________, which fills its own capillaries and vessels and is made up of the _________________ fluid that bathes cells
Definition
lymph; interstitial
Term
When it comes to acquiring fuel and raw materials, why does the size of a multicellular eukaryotic organism matter? Choose the BEST explanation.
Definition
Larger organisms are made of more cells, most of which are no longer in direct contact with the outside world.
Term
Which of the following best describes the inhalation process?
Definition
The diaphragm and intercostal muscles contract. The diaphragm is pulled lower, causing the rib cage to expand. The rapid increase in volume of the chest cavity causes air to be sucked into the lungs.
Term
Which of the following is NOT a function of the blood plasma in vertebrates?
Definition
breaking down large carbohydrates into more easily absorbable smaller carbohydrates
Term

What is the disadvantage of having a "single circuit" with the gills set between the heart and the rest of the tissues?
Definition
Organisms with this configuration cannot sustain as much activity as those with two circuits.
Term
Amphibians must constantly keep their skin moist because:
Definition
the moisture is essential to maintain gas exchange across the skin.
Term
Which of the following components of the human blood is a cell fragment?
Definition
platelets
Term
Which of the following statements about the crocodilian circulatory system is FALSE?
Definition
Crocodiles have open circulatory systems
Term
The main structure(s) involved in gas exchange in insects is/are the:
Definition
trachea.
Term
Which of the following is NOT a component of the blood plasma?
Definition
leukocytes
Term
Which of the following organisms does NOT have a closed circulatory system?
Definition
Both a) and d) are correct answers.
Term
Which of the following is LEAST conducive to the acquisition of oxygen from the environment?
Definition
warm water
Term
Which of the following organisms has an open circulatory system?
Definition
grasshoppers
Term
Fish have a closed circulatory system that is unique among other complex vertebrates. Which of the following is NOT an aspect of the fish's circulatory system?
Definition
All of the above are correct.
Term
Fish have a closed circulatory system that is unique among other complex vertebrates. Which of the following is NOT an aspect of the fish's circulatory system?
Definition
The heart pumps blood through the body first then past the gills.
Term

The three principle functions of the vertebrate circulatory system are:
Definition
transport, protection, and body temperature regulation.
Term
Which of the following is the correct pathway air takes during a bird's first inhalation?
Definition
trachea; anterior air sac; lung
Term
Why is there less air pressure at higher elevations?
Definition
There is less atmosphere "pushing down" from above as one gets higher in elevation.