Question 1

Opposing the blood hydrostatic pressure that forces water across capillaries is the

Accepted Answer

A)   cellular hydrostatic pressure.
B)   albumin concentration gradient.
C)   colloid osmotic pressure.
D)   lymphatic hydrostatic pressure.
E)   law of coupled balanced flow.F) B) and C)
G) B) and D)

Question 2

The major intracellular electrolytes are potassium,magnesium,and phosphate ions,while the chief extracellular electrolytes are sodium,chloride,and ________ _________.

Accepted Answer

The answer of The major intracellular electrolytes are potassium,magnesium,and phosphate...

Question 3

In some invertebrates,if we cut the nerves leading to the heart and the heart stops beating,the heart is considered

Accepted Answer

A)   an open system.
B)   myogenic.
C)   neurogenic.
D)   a deferred pacemaker.
E)   asynchronous.F) A) and E)
G) All of the above C

Question 4

The flap that keeps food and water from going into the larynx is the _______________.

Accepted Answer

The answer of The flap that keeps food and water...

Question 5

Interstitial fluid is constantly formed by

Accepted Answer

A)   the lymphatic system producing it.
B)   lightweight elements in the blood plasma filtered through capillary walls.
C)   absorption across the gut lining.
D)   absorption across the lung surface.
E)   reabsorption in the kidney tubules.F) C) and D)
G) A) and C)

Question 6

The volume of blood forced from either ventricle each minute is known as _________ _________.

Accepted Answer

The answer of The volume of blood forced from either...

Question 7

What are the inherent problems involved in aquatic and aerial breathing?

Accepted Answer

The inherent problems involved in aquati...

Question 8

The atrioventricular valves separate the atria from the ventricles in the heart,and the ___________ valves prevent backflow from the pulmonary artery and the aorta.

Accepted Answer

The answer of The atrioventricular valves separate the atria from...

Question 9

At sea level,air pressure is 760 mm of mercury (Hg) .If we altered the oxygen content in a hospital room to 30% oxygen and 70% nitrogen,the partial pressure of oxygen would be

Accepted Answer

A)   70% - 30% = 40%.
B)   760 x 30% = 228 mm Hg.
C)   760 x 40% = 304 mm Hg.
D)   760 x 70% = 532 mm Hg.
E)   There is not enough information to calculate it.F) A) and E)
G) A) and C)

Question 10

Oxygenated blood enters the heart at the

Accepted Answer

A)   left atrium.
B)   left ventricle.
C)   right atrium.
D)   right ventricle.
E)   None of the choices are correctF) None of the above
G) A) and B)

Question 11

____________ carry blood away from the heart.

Accepted Answer

A)   Capillaries
B)   Venules
C)   Veins
D)   Arteries
E)   Lymph vesselsF) C) and D)
G) A) and B)

Question 12

Which of the following can NOT serve as a respiratory pigment?

Accepted Answer

A)   Hemoglobin
B)   Hemocyanin
C)   Chlorocruorin
D)   Hemerythrin
E)   All of the choices are correctF) C) and D)
G) B) and D)

Question 13

Discern between a myogenic and a neurogenic heart.What types of organisms possess each?

Accepted Answer

A myogenic heart is one in which the heartbeat is initiated and regulated by the muscle cells of the heart itself, rather than by external nerves. In a myogenic heart, specialized muscle cells called pacemaker cells generate electrical impulses that spread throughout the heart, causing it to contract and pump blood. These pacemaker cells are located in the sinoatrial (SA) node in mammals, including humans. The myogenic mechanism allows for a more autonomous control of the heartbeat, which can be modulated by the nervous system but is not entirely dependent on it.

Most vertebrates, including mammals, birds, reptiles, and fish, have myogenic hearts. This type of heart is advantageous for these organisms as it allows for more complex regulation of heart rate necessary for their active lifestyles and the varying demands placed on their circulatory systems.

On the other hand, a neurogenic heart is one where the heartbeat is initiated and controlled by the nervous system. In neurogenic hearts, the rhythmic contractions are dependent on regular electrical impulses from the nervous system. Insects and some other arthropods have neurogenic hearts. In these organisms, a series of nerves along the heart release neurotransmitters that trigger the heart muscle to contract. This type of heart allows for a more direct control by the nervous system, which can be beneficial for organisms that do not require as much fine-tuning of heart rate and may have less complex circulatory needs.

In summary, myogenic hearts are found in most vertebrates and are controlled by specialized heart muscle cells, while neurogenic hearts are found in some invertebrates, such as insects, and are controlled directly by the nervous system. Each type of heart is adapted to the specific circulatory requirements of the organisms that possess them.

Question 14

The contraction of the heart is known as ____________,and the relaxation is diastole.

Accepted Answer

The answer of The contraction of the heart is known...

Question 15

Which association is NOT correct?

Accepted Answer

A)   Pleura-lung and chest epithelium
B)   Trachea-windpipe
C)   Alveoli-gas exchange
D)   Esophagus-vocal cords
E)   Nasal-inhalationF) A) and D)
G) B) and C) D

Question 16

The pulmonary semilunar valves prevent the backflow of blood into the

Accepted Answer

A)   right atrium.
B)   left atrium.
C)   ventricles.
D)   aortic arch.
E)   pulmonary trunk.F) A) and B)
G) A) and C)

Question 17

Discuss the physiological mechanism by which the heartbeat is set (e.g.,discuss the pacemaker cells,Purkinje fibers,and the cardiac control center in the brain).

Accepted Answer

The heartbeat is set by a complex physio...

Question 18

Outline the internal fluid components within a vertebrate organism.

Accepted Answer

Vertebrate organisms, which include mamm...

Question 19

Specialized tubules in insects that make direct contact with the tissues to provide oxygen and remove carbon dioxide are called

Accepted Answer

A)   dermal branchiae.
B)   tracheae.
C)   gills.
D)   lungs.
E)   branchial tufts.F) B) and D)
G) A) and D)

Question 20

A dung beetle journeys into a ball of dung to lay eggs.To avoid being poisoned by the noxious gases,it closes its

Accepted Answer

A)   papulae.
B)   branchial tufts.
C)   book lungs.
D)   bronchi.
E)   spiracles.F) C) and D)
G) A) and C)

Exam 31: Homeostasis: Internal Fluids and Respiration

Opposing the blood hydrostatic pressure that forces water across capillaries is the

Correct Answer
verified

The major intracellular electrolytes are potassium,magnesium,and phosphate ions,while the chief extracellular electrolytes are sodium,chloride,and _.

Correct Answer
verified

In some invertebrates,if we cut the nerves leading to the heart and the heart stops beating,the heart is considered

Correct Answer
verified
C

The flap that keeps food and water from going into the larynx is the _______________.

Correct Answer
verified

Interstitial fluid is constantly formed by

Correct Answer
verified

The volume of blood forced from either ventricle each minute is known as _ _.

Correct Answer
verified

What are the inherent problems involved in aquatic and aerial breathing?

Correct Answer
Answered by ExamLex AI
The inherent problems involved in aquati...
View Answer

The atrioventricular valves separate the atria from the ventricles in the heart,and the ___________ valves prevent backflow from the pulmonary artery and the aorta.

Correct Answer
verified

At sea level,air pressure is 760 mm of mercury (Hg) .If we altered the oxygen content in a hospital room to 30% oxygen and 70% nitrogen,the partial pressure of oxygen would be

Correct Answer
verified

Oxygenated blood enters the heart at the

Correct Answer
verified

____________ carry blood away from the heart.

Correct Answer
verified

Which of the following can NOT serve as a respiratory pigment?

Correct Answer
verified

Discern between a myogenic and a neurogenic heart.What types of organisms possess each?

The contraction of the heart is known as ____________,and the relaxation is diastole.

Correct Answer
verified

Which association is NOT correct?

Correct Answer
verified
D

The pulmonary semilunar valves prevent the backflow of blood into the

Correct Answer
verified

Discuss the physiological mechanism by which the heartbeat is set (e.g.,discuss the pacemaker cells,Purkinje fibers,and the cardiac control center in the brain).

Correct Answer
Answered by ExamLex AI
The heartbeat is set by a complex physio...
View Answer

Outline the internal fluid components within a vertebrate organism.

Correct Answer
Answered by ExamLex AI
Vertebrate organisms, which include mamm...
View Answer

Specialized tubules in insects that make direct contact with the tissues to provide oxygen and remove carbon dioxide are called

Correct Answer
verified

A dung beetle journeys into a ball of dung to lay eggs.To avoid being poisoned by the noxious gases,it closes its

Correct Answer
verified

Exam 31: Homeostasis: Internal Fluids and Respiration

Opposing the blood hydrostatic pressure that forces water across capillaries is the

Correct AnswerverifiedShow Answer

The major intracellular electrolytes are potassium,magnesium,and phosphate ions,while the chief extracellular electrolytes are sodium,chloride,and ________ _________.

Correct AnswerverifiedShow Answer

In some invertebrates,if we cut the nerves leading to the heart and the heart stops beating,the heart is considered

Correct AnswerverifiedC

The flap that keeps food and water from going into the larynx is the _______________.

Correct AnswerverifiedShow Answer

Interstitial fluid is constantly formed by

Correct AnswerverifiedShow Answer

The volume of blood forced from either ventricle each minute is known as _________ _________.

Correct AnswerverifiedShow Answer

What are the inherent problems involved in aquatic and aerial breathing?

Correct AnswerAnswered by ExamLex AIThe inherent problems involved in aquati...View AnswerShow Answer

The atrioventricular valves separate the atria from the ventricles in the heart,and the ___________ valves prevent backflow from the pulmonary artery and the aorta.

Correct AnswerverifiedShow Answer

At sea level,air pressure is 760 mm of mercury (Hg) .If we altered the oxygen content in a hospital room to 30% oxygen and 70% nitrogen,the partial pressure of oxygen would be

Correct AnswerverifiedShow Answer

Oxygenated blood enters the heart at the

Correct AnswerverifiedShow Answer

____________ carry blood away from the heart.

Correct AnswerverifiedShow Answer

Which of the following can NOT serve as a respiratory pigment?

Correct AnswerverifiedShow Answer

Discern between a myogenic and a neurogenic heart.What types of organisms possess each?

The contraction of the heart is known as ____________,and the relaxation is diastole.

Correct AnswerverifiedShow Answer

Which association is NOT correct?

Correct AnswerverifiedD

The pulmonary semilunar valves prevent the backflow of blood into the

Correct AnswerverifiedShow Answer

Discuss the physiological mechanism by which the heartbeat is set (e.g.,discuss the pacemaker cells,Purkinje fibers,and the cardiac control center in the brain).

Correct AnswerAnswered by ExamLex AIThe heartbeat is set by a complex physio...View AnswerShow Answer

Outline the internal fluid components within a vertebrate organism.

Correct AnswerAnswered by ExamLex AIVertebrate organisms, which include mamm...View AnswerShow Answer

Specialized tubules in insects that make direct contact with the tissues to provide oxygen and remove carbon dioxide are called

Correct AnswerverifiedShow Answer

A dung beetle journeys into a ball of dung to lay eggs.To avoid being poisoned by the noxious gases,it closes its

Correct AnswerverifiedShow Answer

Correct Answer
verified

The major intracellular electrolytes are potassium,magnesium,and phosphate ions,while the chief extracellular electrolytes are sodium,chloride,and _.

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

The volume of blood forced from either ventricle each minute is known as _ _.

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The inherent problems involved in aquati...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The heartbeat is set by a complex physio...
View Answer

Correct Answer
Answered by ExamLex AI
Vertebrate organisms, which include mamm...
View Answer

Correct Answer
verified

Correct Answer
verified