Question 1

At the venous ends of the pulmonary capillaries...

Accepted Answer

A)  the Pco2 is higher in the capillaries than in the alveoli. 
B)  the Pco2 is lower in the capillaries than in the alveoli. 
C)  the Pco2 is equal in the capillaries and in the alveoli. 
D)  the Pco2 is higher at first in the capillaries than in the alveoli, and then it is lower in the alveoli than in the capillaries. 
E)  the Pco2 is lower at first in the capillaries than in the alveoli, and then it is higher in the alveoli than in the capillaries. 
A)  the Pco2 is higher in the capillaries than in the alveoli. 
B)  the Pco2 is lower in the capillaries than in the alveoli. 
C)  the Pco2 is equal in the capillaries and in the alveoli. 
D)  the Pco2 is higher at first in the capillaries than in the alveoli, and then it is lower in the alveoli than in the capillaries. 
E)  the Pco2 is lower at first in the capillaries than in the alveoli, and then it is higher in the alveoli than in the capillaries.

Question 2

Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

Accepted Answer

A)  dissolved in plasma; associated with salt or acid 
B)  bound to hemoglobin; associated with bicarbonate ions in the plasma 
C)  combined with albumin; associated with carbonic acid 
D)  bound to hemoglobin; bound to albumin 
E)  bound to plasma proteins; carried as carbon dioxide 
A)  dissolved in plasma; associated with salt or acid 
B)  bound to hemoglobin; associated with bicarbonate ions in the plasma 
C)  combined with albumin; associated with carbonic acid 
D)  bound to hemoglobin; bound to albumin 
E)  bound to plasma proteins; carried as carbon dioxide

At the venous ends of the pulmonary capillaries...

Most oxygen is carried in the blood ; but most carbon dioxide is __.

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

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Exam 15: Respiratory System

At the venous ends of the pulmonary capillaries...

Most oxygen is carried in the blood ______; but most carbon dioxide is ________.

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissuesasis of Life

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Digestive System

Nutrition, Metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Development, Heredity, and Aging

Filters

Most oxygen is carried in the blood ; but most carbon dioxide is __.