Question 1

The SA node

Accepted Answer

A)  generates excitatory signals for muscle contraction. 
B)  is under voluntary control. 
C)  receives electrical signals from the AV node. 
D)  is located in the right atrium. 
E)  is all of these. 
A)  generates excitatory signals for muscle contraction. 
B)  is under voluntary control. 
C)  receives electrical signals from the AV node. 
D)  is located in the right atrium. 
E)  is all of these. A

Question 2

Systolic pressure measures

Accepted Answer

A)  the contracting force of the ventricles. 
B)  the pressure of fully relaxed ventricles. 
C)  the contracting force of the atria. 
D)  the pressure of fully relaxed atria. 
E)  the contracting force of the entire heart. 
A)  the contracting force of the ventricles. 
B)  the pressure of fully relaxed ventricles. 
C)  the contracting force of the atria. 
D)  the pressure of fully relaxed atria. 
E)  the contracting force of the entire heart. A

Question 3

Which of the following animals has a closed circulatory system?

Accepted Answer

A)  clams 
B)  bees 
C)  rabbits 
D)  earthworms 
E)  more than one of these animals 
A)  clams 
B)  bees 
C)  rabbits 
D)  earthworms 
E)  more than one of these animals E

Question 4

As blood flows through a capillary bed,

Accepted Answer

A)  blood pressure increases. 
B)  blood pressure remains constant. 
C)  blood pressure decreases. 
D)  blood doesn't move through capillaries. 
E)  none of these occur. 
A)  blood pressure increases. 
B)  blood pressure remains constant. 
C)  blood pressure decreases. 
D)  blood doesn't move through capillaries. 
E)  none of these occur.

Question 5

The heart chamber with the thickest wall is the

Accepted Answer

A)  left ventricle. 
B)  right ventricle. 
C)  right atrium. 
D)  left atrium. 
E)  both atria have equally thicker walls than the ventricles. 
A)  left ventricle. 
B)  right ventricle. 
C)  right atrium. 
D)  left atrium. 
E)  both atria have equally thicker walls than the ventricles.

Question 6

This animal has hemolymph that empties into an internal cavity.Which animal is it?

Accepted Answer

A)  a bee 
B)  a clam 
C)  a monkey 
D)  an earthworm 
E)  more than one of these animals 
A)  a bee 
B)  a clam 
C)  a monkey 
D)  an earthworm 
E)  more than one of these animals

Question 7

Match the respiratory structure with its description.
-site of gas exchange in the lungs

Accepted Answer

A) alveolus 
B) bronchiole 
C) epiglottis 
D) glottis 
E) larynx
F)pharynx
G)trachea
H)spiracle 
A) alveolus 
B) bronchiole 
C) epiglottis 
D) glottis 
E) larynx
F)pharynx
G)trachea
H)spiracle

Question 8

The most numerous cells carried in the plasma are

Accepted Answer

A)  erythrocytes. 
B)  leukocytes. 
C)  platelets. 
D)  thrombocytes. 
E)  cyanocytes. 
A)  erythrocytes. 
B)  leukocytes. 
C)  platelets. 
D)  thrombocytes. 
E)  cyanocytes.

Question 9

Cardio-cerebral resuscitation (CCR)differs from CPR in what way?

Accepted Answer

A)  in CCR, an electrical shocking device is used but not in CPR 
B)  in CPR, an electrical shocking device is used but not in CCR 
C)  in CCR, mouth-to-mouth resuscitation is used but not in CPR 
D)  in CPR, mouth-to-mouth resuscitation is used but not in CCR 
E)  CCR is not as effective as CPR 
A)  in CCR, an electrical shocking device is used but not in CPR 
B)  in CPR, an electrical shocking device is used but not in CCR 
C)  in CCR, mouth-to-mouth resuscitation is used but not in CPR 
D)  in CPR, mouth-to-mouth resuscitation is used but not in CCR 
E)  CCR is not as effective as CPR

Question 10

Which of the following deliver oxygen-poor blood to the right atrium?

Accepted Answer

A)  vena cavae 
B)  pulmonary artery 
C)  pulmonary vein 
D)  aorta 
E)  left atrium 
A)  vena cavae 
B)  pulmonary artery 
C)  pulmonary vein 
D)  aorta 
E)  left atrium

Question 11

Which of the following is found in an open circulatory system but NOT a closed circulatory system?

Accepted Answer

A)  cavities in body tissues 
B)  capillaries 
C)  a heart or hearts 
D)  a single vascular circuit 
E)  more than one of these is found in an open circulatory system but NOT in a closed circulatory system 
A)  cavities in body tissues 
B)  capillaries 
C)  a heart or hearts 
D)  a single vascular circuit 
E)  more than one of these is found in an open circulatory system but NOT in a closed circulatory system

Question 12

The thinnest vessels in the human circulatory system are the

Accepted Answer

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

Question 13

This animal has two atria and one ventricle and two vascular circuits.This animal is

Accepted Answer

A)  a frog. 
B)  a woodpecker. 
C)  an alligator. 
D)  a rat. 
E)  more than one of these. 
A)  a frog. 
B)  a woodpecker. 
C)  an alligator. 
D)  a rat. 
E)  more than one of these.

Question 14

Match the respiratory structure with its description.
-opening formed when the vocal cords relax

Accepted Answer

A) alveolus 
B) bronchiole 
C) epiglottis 
D) glottis 
E) larynx
F)pharynx
G)trachea
H)spiracle 
A) alveolus 
B) bronchiole 
C) epiglottis 
D) glottis 
E) larynx
F)pharynx
G)trachea
H)spiracle

Question 15

Blood flow distribution can be adjusted by adjusting the diameter of the

Accepted Answer

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

Question 16

Which of the following is an advantage of having a four-chambered heart?

Accepted Answer

A)  only oxygen-rich blood flows to tissues 
B)  blood pressure in the separate circuits is not independently controlled 
C)  two separate circuits are possible 
D)  only with a four-chambered heart are lungs possible 
E)  more than one of these is an advantage to having a four-chambered heart 
A)  only oxygen-rich blood flows to tissues 
B)  blood pressure in the separate circuits is not independently controlled 
C)  two separate circuits are possible 
D)  only with a four-chambered heart are lungs possible 
E)  more than one of these is an advantage to having a four-chambered heart

Question 17

Some invertebrates can move gases across their cell's membrane by ___ through interstitial fluid.

Accepted Answer

A)  active transport 
B)  facilitated diffusion 
C)  bulk transport 
D)  simple diffusion 
E)  osmosis 
A)  active transport 
B)  facilitated diffusion 
C)  bulk transport 
D)  simple diffusion 
E)  osmosis

Question 18

The respiratory pacemaker is located in the

Accepted Answer

A)  lungs. 
B)  cerebral cortex. 
C)  brain stem. 
D)  bronchioles. 
E)  alveoli. 
A)  lungs. 
B)  cerebral cortex. 
C)  brain stem. 
D)  bronchioles. 
E)  alveoli.

Question 19

The cardiac pacemaker is the

Accepted Answer

A)  sinoatrial node. 
B)  atrioventricular node. 
C)  pulmonary node. 
D)  aortic node. 
E)  sinoventricular node. 
A)  sinoatrial node. 
B)  atrioventricular node. 
C)  pulmonary node. 
D)  aortic node. 
E)  sinoventricular node.

Question 20

____ is (are)the transport medium for blood cells and platelets.

Accepted Answer

A)  Pure water 
B)  Plasma 
C)  Lymph fluid 
D)  Plasma and lymph fluid 
E)  None of these 
A)  Pure water 
B)  Plasma 
C)  Lymph fluid 
D)  Plasma and lymph fluid 
E)  None of these

Exam 21: Circulation and Respiration

The SA node

Systolic pressure measures

Which of the following animals has a closed circulatory system?

As blood flows through a capillary bed,

The heart chamber with the thickest wall is the

This animal has hemolymph that empties into an internal cavity.Which animal is it?

Match the respiratory structure with its description. -site of gas exchange in the lungs

The most numerous cells carried in the plasma are

Cardio-cerebral resuscitation (CCR)differs from CPR in what way?

Which of the following deliver oxygen-poor blood to the right atrium?

Which of the following is found in an open circulatory system but NOT a closed circulatory system?

The thinnest vessels in the human circulatory system are the

This animal has two atria and one ventricle and two vascular circuits.This animal is

Match the respiratory structure with its description. -opening formed when the vocal cords relax

Blood flow distribution can be adjusted by adjusting the diameter of the

Which of the following is an advantage of having a four-chambered heart?

Some invertebrates can move gases across their cell's membrane by ___ through interstitial fluid.

The respiratory pacemaker is located in the

The cardiac pacemaker is the

____ is (are)the transport medium for blood cells and platelets.

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

DNA Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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