Question 1

Blood transports the most carbon dioxide by which of the following?

Accepted Answer

A)  as bicarbonate ions
B)  in red blood cells
C)  dissolved in the plasma
D)  bound to hemoglobin
E)  bound to myoglobinF) B) and E)
G) B) and C)

Question 2

The atrioventricular node sets the tempo of the heart beat.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is NOT a component of blood?

Accepted Answer

A)  lymph
B)  red blood cells
C)  white blood cells
D)  plasma
E)  plateletsF) All of the above
G) A) and C)

Question 4

Aerobic respiration consumes ____________ gas and generates ___________________ gas as a waste product.

Accepted Answer

A)  oxygen;carbon dioxide
B)  nitrogen;carbon dioxide
C)  carbon dioxide;nitrogen
D)  oxygen;nitrogen
E)  carbon dioxide;oxygenF) A) and B)
G) A) and C)

Question 5

Which drugs would be prescribed to a person who is at risk of forming a blood clot?

Accepted Answer

A)  a beta-blocker
B)  aspirin
C)  a diuretic
D)  a beta-blocker and a diuretic
E)  aspirin and a diureticF) B) and C)
G) B) and E)

Question 6

The cellular fragments that help in initiating blood clotting are

Accepted Answer

A)  leukocytes.
B)  red blood cells.
C)  platelets.
D)  cartilage cells.
E)  bone cells.F) B) and E)
G) C) and D)

Question 7

Vertebrates with a three-chambered heart include

Accepted Answer

A)  fish.
B)  amphibians.
C)  birds.
D)  mammals.
E)  annelids.F) C) and E)
G) All of the above

Question 8

Each day the human heart sends a volume of blood equal to about _____________ through the body.

Accepted Answer

A)  50,000 liters
B)  1,000 liters
C)  7,000 liters
D)  2,000 liters
E)  5,000 litersF) C) and D)
G) B) and D)

Question 9

Which main tissue type of the circulatory system enables diffusion across walls of capillaries?

Accepted Answer

A)  connective
B)  nervous
C)  muscle
D)  vascular
E)  epithelialF) All of the above
G) A) and B)

Question 10

The protein that carries oxygen in the red blood cells is

Accepted Answer

A)  myoglobin.
B)  hemoglobin.
C)  actin.
D)  iron.
E)  insulin.F) D) and E)
G) A) and B)

Question 11

A dual-chamber pacemaker is surgically placed in a patient's chest.Wires then carry pulses to the right atrium and the right ventricle.How would the pulses be directed from the pacemaker to the heart?

Accepted Answer

A)  Only the ventricle would be stimulated.
B)  The ventricle would be stimulated first and then the atrium.
C)  Both the atrium and ventricle would be stimulated simultaneously.
D)  Only the atrium would be stimulateD.
E)  The atrium would be stimulated first and then the ventriclE.F) A) and E)
G) A) and D)

Question 12

Where does oxygenated and deoxygenated blood mix in fishes and mammals?

Accepted Answer

A)  only the gills/lungs and non-cardiac tissues of fishes and mammals
B)  the heart,gills/lungs,and non-cardiac tissues of fishes and mammals
C)  only the heart of fishes and mammals
D)  only the heart and gills/lungs of fishes and mammals
E)  only the heart of mammals and nowhere in fishesF) B) and C)
G) All of the above

Question 13

The large vessels of the circulatory system that carry blood away from the heart are

Accepted Answer

A)  veins.
B)  capillaries.
C)  arteries.
D)  lymph vessels.
E)  sieve tubes.F) A) and D)
G) B) and E)

Question 14

Which main tissue type of the circulatory system regulates airflow to alveoli?

Accepted Answer

A)  connective
B)  nonvascular
C)  muscle
D)  nervous
E)  vascularF) B) and D)
G) None of the above

Question 15

The upper chambers of the mammalian heart are the

Accepted Answer

A)  ventricles.
B)  arteries.
C)  vascular cavities.
D)  atria.
E)  sinuses.F) A) and E)
G) A) and D)

Question 16

Cardiac output may increase by

Accepted Answer

A)  both a lower than normal stroke volume and greater than normal heart rate.
B)  a lower than normal stroke volume only.
C)  a lower than normal heart rate only.
D)  a greater than normal stroke volume only.
E)  both a greater than normal stroke volume and heart ratE.F) A) and C)
G) A) and D)

Question 17

Individuals with asthma have difficulty exhaling.Air has to pass through the same narrowed airway on the way in and out,why would exhaling be more difficult than inhaling?

Accepted Answer

A)  Air is denser when it is exhaled.
B)  People have to concentrate on exhaling,while inhaling is a reflex.
C)  Exhaling requires more energy than inhaling.
D)  Inhaling normally uses diaphragm contractions,while exhaling is normally passive except during an asthma attack exhaling requires additional muscles.
E)  The alveoli have lost their walls,and cannot push the air out anymorE.F) C) and D)
G) B) and C)

Question 18

The most important signal that the brain uses to set the breathing rate is the level of blood

Accepted Answer

A)  nitrogen.
B)  oxygen.
C)  carbon dioxide.
D)  sulfur.
E)  hemoglobin.F) A) and D)
G) A) and B)

Question 19

A valve replacement would prevent which of the following?

Accepted Answer

A)  flow of blood from the right atrium to right ventricle
B)  flow of blood from the left ventricle to the aorta
C)  flow of blood from the inferior vena cava to the right atrium
D)  flow of blood from the right ventricle to right atrium
E)  flow of blood from the right ventricle to the pulmonary arteryF) B) and D)
G) A) and B)

Question 20

If carbon dioxide is not released by exhaling of the respiratory system,then

Accepted Answer

A)  the pH of blood would lower in the circulatory system.
B)  the pH of blood would become acidic in the circulatory system.
C)  carbon dioxide would accumulate in the blood in the circulatory system.
D)  All answers are correct.E) A) and D)
F) B) and C)

Exam 27: The Circulatory and Respiratory Systems

The cellular fragments that help in initiating blood clotting are

Correct AnswerverifiedShow Answer

The large vessels of the circulatory system that carry blood away from the heart are

Correct AnswerverifiedShow Answer

Vertebrates with a three-chambered heart include

Correct AnswerverifiedShow Answer

Blood transports the most carbon dioxide by which of the following?

Correct AnswerverifiedShow Answer

If carbon dioxide is not released by exhaling of the respiratory system,then

Correct AnswerverifiedShow Answer

The atrioventricular node sets the tempo of the heart beat.

Correct AnswerverifiedShow Answer

A dual-chamber pacemaker is surgically placed in a patient's chest.Wires then carry pulses to the right atrium and the right ventricle.How would the pulses be directed from the pacemaker to the heart?

Correct AnswerverifiedShow Answer

Which main tissue type of the circulatory system regulates airflow to alveoli?

Correct AnswerverifiedShow Answer

The upper chambers of the mammalian heart are the

Correct AnswerverifiedShow Answer

Which of the following is NOT a component of blood?

Correct AnswerverifiedShow Answer

The protein that carries oxygen in the red blood cells is

Correct AnswerverifiedShow Answer

The most important signal that the brain uses to set the breathing rate is the level of blood

Correct AnswerverifiedShow Answer

Which drugs would be prescribed to a person who is at risk of forming a blood clot?

Correct AnswerverifiedShow Answer

Which main tissue type of the circulatory system enables diffusion across walls of capillaries?

Correct AnswerverifiedShow Answer

Where does oxygenated and deoxygenated blood mix in fishes and mammals?

Correct AnswerverifiedShow Answer

Each day the human heart sends a volume of blood equal to about _____________ through the body.

Correct AnswerverifiedShow Answer

A valve replacement would prevent which of the following?

Correct AnswerverifiedShow Answer

Individuals with asthma have difficulty exhaling.Air has to pass through the same narrowed airway on the way in and out,why would exhaling be more difficult than inhaling?

Correct AnswerverifiedShow Answer

Cardiac output may increase by

Correct AnswerverifiedShow Answer

Aerobic respiration consumes ____________ gas and generates ___________________ gas as a waste product.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Aerobic respiration consumes gas and generates _______ gas as a waste product.

Correct Answer
verified