Self-Quiz

Life on Earth Chapter 22 Circulation and Respiration
Self-Quiz

Which of the following is not an important function of the vertebrate circulatory system?
1. transport of nutrients and respiratory gases
2. regulation of body temperature
3. protection of the body by circulating antibodies
4. removal of waste products for excretion from the body
5. defense against blood loss, through clotting
What event initiates blood clotting?
1. contact with an irregular surface by platelets and other factors in plasma
2. production of the enzyme thrombin
3. conversion of fibrinogen into fibrin
4. conversion of fibrin into fibrinogen
5. excess flow of blood through a capillary
The sites of waste, nutrient, gas, and hormone exchange between the blood and body cells are the
1. arteries
2. arterioles
3. capillaries
4. veins
5. all blood vessels
What produces systolic blood pressure?
1. contraction of the right atrium
2. contraction of the right ventricle
3. contraction of the atria
4. contraction of the ventricles
5. the pause between heartbeats
Which of the following is not a component of plasma?
1. water
2. globulins
3. fibrinogen
4. albumins
5. platelets
Lymph most closely resembles which of the following?
1. blood
2. urine
3. plasma
4. interstitial fluid
5. Water
Blood going from the heart to the pulmonary artery passes through ________ valve.
1. an atrioventricular
2. a semilunar
3. the bicuspid
4. the tricuspid
5. there is no valve there.
Which sentence best describes the rhythmic beating of the heart?
1. All four chambers contract together, then relax.
2. Atria contract, heart is at complete rest, then ventricles contract.
3. Ventricles contract, atria contract, heart is at complete rest.
4. Atria contract, ventricles contract, heart is at complete rest.
5. Right atrium and right ventricle contract together, left atrium and left ventricle contract, heart is at complete rest.
Approximately 99% of blood cells are involved in
1. immunity
2. transporting oxygen
3. eating invaders
4. amoeba-like activities
5. entering and leaving the bloodstream
Athletes, such as long-distance runners, like to train at high altitudes because the lack of oxygen stimulates the_________________________.
1. body to produce more lung tissue
2. bone marrow to make more erythrocytes
3. muscles to contract aerobically
4. muscles to contract more strongly
5. capillaries to diffuse oxygen more readily
All of the following are true of lymph nodes except:
1. destroy bacteria and viruses
2. aid in clotting
3. produce certain white blood cells
4. are located along lymphatic vessels
5. are filled with channels through which the lymph is forced
With which other system do specialized respiratory systems most closely interact in exchanging gases between the cells and the environment?
1. skin
2. excretory system
3. circulatory system
4. muscular system
5. nervous system
The gas-exchange portion of the human respiratory system is the
1. larynx
2. trachea
3. bronchi
4. pharynx
5. alveoli
How is most of the oxygen transported in the blood?
1. dissolved in plasma
2. bound to hemoglobin
3. in the form of CO₂
4. as bicarbonate
5. dissolved in water
Which of the following statements regarding cigarette smoking is true?
1. Cigarette smoke damages the alveoli.
2. Cigarette smoke decreases the amount of oxygen in the blood.
3. Cigarette smoke causes many types of cancer.
4. Cigarette smoke can lead to heart damage.
5. all of the above
Why do respiratory systems and circulatory systems use bulk flow rather than diffusion for moving gases over long distances?
1. Diffusion cannot move enough gas.
2. Diffusion is too slow.
3. Bulk flow requires energy.
4. Diffusion requires energy.
5. Diffusion never occurs over long distances, because it requires too much energy.
After passing through the nasal cavities, incoming air moves next to the
1. larynx
2. trachea
3. pharynx
4. bronchi
5. bronchioles
A thin slice of a lung would look like a thin slice
1. through a blown-up balloon
2. of a piece of wood
3. of the heart at the level of the ventricles
4. of sponge cake
5. of carrot
The cells lining the conducting portion of the human respiratory system secrete
1. mucus
2. blood
3. tissue fluid
4. hormones
5. enzymes
When blood is drawn from a blood vessel in your arm, it is dark maroon-red in color. This indicates that it
1. was taken from an artery
2. was going away from the heart
3. was taken from a vein
4. was on its way to the tissues of the arm
5. has just come from the lungs
What is the approximate surface area for gas exchange in human lungs?
1. 10 square feet
2. 100 square feet
3. 200 square feet
4. 500 square feet
5. 800 square feet

Legal Statement