Question 1

_________,the liquid portion of blood contains metabolites,wastes,hormones,ions,and a variety of proteins.

Accepted Answer

A) Eosinophil 
B) Lymph 
C) Edema 
D) Plasma 
A) Eosinophil 
B) Lymph 
C) Edema 
D) Plasma

Question 2

One mechanism that involves the blood supply that can be utilized by some animals to limit heat loss in cold environments is

Accepted Answer

A) vasodilation of the near surface blood vessels. 
B) vasodilation of below surface blood vessels. 
C) vasoconstriction of the precapillary sphincters in the skin. 
D) vasoconstriction of veins. 
E) increasing cardiac output. 
A) vasodilation of the near surface blood vessels. 
B) vasodilation of below surface blood vessels. 
C) vasoconstriction of the precapillary sphincters in the skin. 
D) vasoconstriction of veins. 
E) increasing cardiac output.

Question 3

Primitive chordates contain a heart which has

Accepted Answer

A) a specialized zone of the ventral artery. 
B) two chambers. 
C) three chambers. 
D) four chambers. 
E) only a ventriclE. 
A) a specialized zone of the ventral artery. 
B) two chambers. 
C) three chambers. 
D) four chambers. 
E) only a ventriclE.

Question 4

Which of the following type of cell is not correctly matched to its function?

Accepted Answer

A) platelets-blood clotting 
B) leukocytes-immunity 
C) erythrocytes-new cell production 
D) leukocytes-phagocytosis 
E) erythrocytes-oxygen transport 
A) platelets-blood clotting 
B) leukocytes-immunity 
C) erythrocytes-new cell production 
D) leukocytes-phagocytosis 
E) erythrocytes-oxygen transport

Question 5

The blood cells that have some kind of protective function are all of the following except

Accepted Answer

A) eosinophils. 
B) macrophages. 
C) neutrophils. 
D) lymphocytes. 
E) erythrocytes. 
A) eosinophils. 
B) macrophages. 
C) neutrophils. 
D) lymphocytes. 
E) erythrocytes.

Question 6

Which of the following vessels carries oxygenated blood?

Accepted Answer

A) pulmonary arteries 
B) pulmonary veins 
C) femoral vein 
D) inferior vena cava 
E) renal vein 
A) pulmonary arteries 
B) pulmonary veins 
C) femoral vein 
D) inferior vena cava 
E) renal vein

Question 7

In spite of very low pressure in the veins,blood flow back to the lungs is ensured by all of the following mechanisms except

Accepted Answer

A) veins have one-way valves. 
B) veins have thinner muscle layers. 
C) veins have thinner elastic fiber layers. 
D) veins can be expanded to hold additional blooD. 
E) veins have periodic sphincter muscles. 
A) veins have one-way valves. 
B) veins have thinner muscle layers. 
C) veins have thinner elastic fiber layers. 
D) veins can be expanded to hold additional blooD. 
E) veins have periodic sphincter muscles.

Question 8

During circulation blood is filtered out of capillaries without any proteins.This fluid bathes the tissues and is called

Accepted Answer

A) lymph. 
B) serum. 
C) interstitial fluid. 
D) synovial fluiD. 
E) plasma. 
A) lymph. 
B) serum. 
C) interstitial fluid. 
D) synovial fluiD. 
E) plasma.

Question 9

Even though the atria and ventricles are separated by connective tissue,the depolarization can slowly pass through a slender connection of cardiac muscle cells called the

Accepted Answer

A) bundle of HIS. 
B) AV node. 
C) SA node. 
D) Purkinje fibers. 
E) tricuspid valvE. 
A) bundle of HIS. 
B) AV node. 
C) SA node. 
D) Purkinje fibers. 
E) tricuspid valvE.

Question 10

Which of the following animals is likely to have the circulatory pattern shown in the figure?

Accepted Answer

A) frog 
B) crocodile 
C) bird 
D) mammal 
E) fish 
A) frog 
B) crocodile 
C) bird 
D) mammal 
E) fish

Question 11

A closed circulatory system as opposed to an open system permits

Accepted Answer

A) transport of blood which is always enclosed within vessels from and back to a pump,the heart. 
B) a larger capacity for blood. 
C) degradation of nutrients in the blood and waste removal. 
D) oxygen to be carried in cells present in the blooD. 
E) messages to be carried to the neurons. 
A) transport of blood which is always enclosed within vessels from and back to a pump,the heart. 
B) a larger capacity for blood. 
C) degradation of nutrients in the blood and waste removal. 
D) oxygen to be carried in cells present in the blooD. 
E) messages to be carried to the neurons.

Question 12

A major innovation from the fish to the amphibian/reptilian circulation is the advent of lungs and allowing no mixing of oxygenated and __________ blood by the help of incomplete divisions of the heart.

Accepted Answer

A) decarbonated 
B) nitrogenated 
C) deoxygenated 
D) hydrogenated 
A) decarbonated 
B) nitrogenated 
C) deoxygenated 
D) hydrogenated

Question 13

Which of the following values would be considered hypertensive?

Accepted Answer

A) 16/12 mm Hg 
B) 120/80 mm Hg 
C) 100/150 mm Hg 
D) 100/60 mm Hg 
E) 160/120 mm Hg 
A) 16/12 mm Hg 
B) 120/80 mm Hg 
C) 100/150 mm Hg 
D) 100/60 mm Hg 
E) 160/120 mm Hg

Question 14

Blood is pumped from the heart into the arterial system,which branches from arteries into fine __________.

Accepted Answer

A) arterioles 
B) venules 
C) capillaries 
D) veins 
A) arterioles 
B) venules 
C) capillaries 
D) veins

Question 15

All of the following are functions of the circulatory system except

Accepted Answer

A) oxygen,nutrient,and waste transport. 
B) synthesis of red and white blood cells. 
C) blood clotting and immune defense. 
D) temperature regulation. 
E) hormone transport. 
A) oxygen,nutrient,and waste transport. 
B) synthesis of red and white blood cells. 
C) blood clotting and immune defense. 
D) temperature regulation. 
E) hormone transport.

Question 16

The P wave of the ECG represents

Accepted Answer

A) the contraction of the atriA. 
B) the relaxation of the atria. 
C) the depolarization of the atria. 
D) the repolarization of the atria. 
E) the contraction of the ventriclE. 
A) the contraction of the atriA. 
B) the relaxation of the atria. 
C) the depolarization of the atria. 
D) the repolarization of the atria. 
E) the contraction of the ventriclE.

Question 17

Exchange of gases and metabolites between the blood and tissues occurs in the

Accepted Answer

A) arteries. 
B) arterioles. 
C) capillaries. 
D) venules. 
E) veins. 
A) arteries. 
B) arterioles. 
C) capillaries. 
D) venules. 
E) veins.

Question 18

The cells that lack a nucleus and have a relatively short life span are

Accepted Answer

A) neutrophils. 
B) eosinophils. 
C) basophils. 
D) erythrocytes. 
E) lymphocytes. 
A) neutrophils. 
B) eosinophils. 
C) basophils. 
D) erythrocytes. 
E) lymphocytes.

Question 19

What structure evolved into the sinoatrial node?

Accepted Answer

A) the SV node 
B) connective tissue around the heart 
C) the sinoatrial node evolved de novo 
D) the sinus venosus 
E) the bulbus arteriosus 
A) the SV node 
B) connective tissue around the heart 
C) the sinoatrial node evolved de novo 
D) the sinus venosus 
E) the bulbus arteriosus

Exam 50: The Circulatory System

_________,the liquid portion of blood contains metabolites,wastes,hormones,ions,and a variety of proteins.

One mechanism that involves the blood supply that can be utilized by some animals to limit heat loss in cold environments is

Primitive chordates contain a heart which has

Which of the following type of cell is not correctly matched to its function?

The blood cells that have some kind of protective function are all of the following except

Which of the following vessels carries oxygenated blood?

In spite of very low pressure in the veins,blood flow back to the lungs is ensured by all of the following mechanisms except

During circulation blood is filtered out of capillaries without any proteins.This fluid bathes the tissues and is called

Even though the atria and ventricles are separated by connective tissue,the depolarization can slowly pass through a slender connection of cardiac muscle cells called the

Which of the following animals is likely to have the circulatory pattern shown in the figure?

A closed circulatory system as opposed to an open system permits

A major innovation from the fish to the amphibian/reptilian circulation is the advent of lungs and allowing no mixing of oxygenated and __________ blood by the help of incomplete divisions of the heart.

Which of the following values would be considered hypertensive?

Blood is pumped from the heart into the arterial system,which branches from arteries into fine __________.

All of the following are functions of the circulatory system except

The P wave of the ECG represents

Exchange of gases and metabolites between the blood and tissues occurs in the

The cells that lack a nucleus and have a relatively short life span are

What structure evolved into the sinoatrial node?

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