Filters
Question type

Study Flashcards

Birds and mammals are endotherms,meaning they spend enormous amounts of energy maintaining a constant body temperature.To meet these energy needs,birds and mammals independently evolved four-chambered hearts,completing the separation of oxygen-rich from oxygen-depleted blood.How would this maximize the amount of oxygen reaching tissues?


A) Diffusion of oxygen from oxygenated blood into tissues would be increased.
B) Diffusion of oxygen from oxygenated blood into tissues would be decreased.
C) Less energy would be required to pump oxygen into the blood.
D) Less energy would be required to pump oxygen into the tissues.
E) Less energy would be required to pump oxygen into the lungs.

F) A) and E)
G) B) and D)

Correct Answer

verifed

verified

Which drugs would be prescribed to a person who has high blood pressure?


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

F) A) and B)
G) A) and E)

Correct Answer

verifed

verified

A respiratory disease caused by an allergic response that causes spasms in the smooth muscle of the lung's bronchi is


A) aneurysm.
B) emphysema.
C) anemia.
D) asthma.
E) arterosclerosis.

F) None of the above
G) A) and B)

Correct Answer

verifed

verified

The protein found in red blood cells that transports oxygen is


A) myoglobin.
B) actin.
C) fibrinogen.
D) hemoglobin.
E) myosin.

F) D) and E)
G) A) and B)

Correct Answer

verifed

verified

Sleep apnea is temporarily ceasing to breathe and is more common in people who are overweight.Excess fat in the neck compresses the airway,cutting off air flow.The person then wakes up to clear their throat and resumes normal breathing.Which of the following would trigger this reflex?


A) increased oxygen
B) decreased carbon dioxide
C) increased carbon dioxide
D) decreased oxygen
E) decreased nitrogen

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

The capillary wall consists only of


A) a single layer of epithelial cells covered by connective tissue.
B) connective tissue.
C) cardiac muscle.
D) smooth muscle.
E) a single layer of epithelial cells covered by smooth musclE.

F) A) and E)
G) B) and D)

Correct Answer

verifed

verified

The movement of air across the vocal cords in the _____________ produces sounds.


A) pharynx
B) larynx
C) trachea
D) glottis
E) uvula

F) All of the above
G) A) and E)

Correct Answer

verifed

verified

A decrease in the oxygen-carrying capacity of blood is called anemia.

A) True
B) False

Correct Answer

verifed

verified

Air moves into the lungs when the air pressure in the lungs is __________________ than the air pressure outside of the lungs.This occurs when the muscles of the diaphragm _______________.


A) lower;relax
B) lower;contract
C) higher;relax
D) higher;contract

E) None of the above
F) A) and D)

Correct Answer

verifed

verified

Hemoglobin has a greater affinity for carbon monoxide than for oxygen.Which of the following would you predict to be a symptom of carbon monoxide poisoning?


A) hyperactivity
B) increased blood pH
C) decreased exhalation of oxygen
D) increased heart rate
E) decreased ATP production

F) C) and D)
G) A) and E)

Correct Answer

verifed

verified

A heartbeat begins in the


A) atrioventricular valve.
B) atrioventricular node.
C) sinoatrial node.
D) right ventricle.
E) left atrium.

F) None of the above
G) All of the above

Correct Answer

verifed

verified

In a coronary bypass,which of the following is being bypassed?


A) coronary veins
B) inferior vena cava
C) coronary arteries
D) superior vena cava
E) aorta

F) A) and B)
G) C) and D)

Correct Answer

verifed

verified

Place the following terms in the correct order from which an oxygen molecule in blood travels from the heart to a muscle cell in the arm where ATP will be made for the arm to lift an object.


A) heart,arteries,arterioles,capillaries,interstitial fluid
B) capillaries,venules,veins,heart
C) heart,capillaries,venules,veins
D) heart,capillaries,arterioles,arteries,interstitial fluid
E) heart,capillaries,arterioles,arteries,alveoli

F) B) and D)
G) A) and D)

Correct Answer

verifed

verified

The ______ system carries carbon dioxide waste of aerobic respiration away from cells,and the carbon dioxide is removed from the body by the ______ system.


A) circulatory;skeletal
B) digestive;muscular
C) muscular;respiratory
D) respiratory;circulatory
E) circulatory;respiratory

F) All of the above
G) A) and E)

Correct Answer

verifed

verified

The small air sacs of the lungs are the


A) alveoli.
B) bronchioles.
C) arterioles.
D) spiracles.
E) uvula.

F) A) and E)
G) A) and D)

Correct Answer

verifed

verified

The ______ system brings in oxygen to the body,and the oxygen is transported to the cells by the ______ for aerobic respiration.


A) respiratory;circulatory
B) muscular;circulatory
C) digestive;circulatory
D) digestive;respiratory
E) skeletal;muscular

F) A) and E)
G) D) and E)

Correct Answer

verifed

verified

A frog can absorb oxygen through its skin and lungs.Which of the following is an advantage of absorbing oxygen through the lungs?


A) The heart pumps oxygen from the lungs into the bloodstream.
B) Oxygen absorbed in the lungs enters the blood stream.
C) Air in the lungs has a higher concentration of oxygen than air in the atmosphere.
D) Oxygen diffuses across cells more slowly than across the lining of the lungs.
E) Lungs have more surface area than the skin.

F) C) and D)
G) B) and E)

Correct Answer

verifed

verified

Why could you donate plasma twice a week?


A) Plasma contains only proteins and fluid which can be replaced quickly.
B) Plasma contains platelets which can be replaced quickly.
C) Plasma contains red blood cells which can be replaced quickly.
D) Plasma contains only water and can be rapidly replaceD.
E) Plasma is regenerated from the blood cells injected back into the donor.

F) A) and E)
G) B) and C)

Correct Answer

verifed

verified

Diffusion passes oxygen between the alveoli of the ______ and the capillaries of ______.


A) circulatory system;respiratory system
B) respiratory system;circulatory system
C) muscular system;circulatory system
D) circulatory system;muscular system
E) digestive system;muscular system

F) A) and E)
G) A) and D)

Correct Answer

verifed

verified

Showing 121 - 139 of 139

Related Exams

Show Answer