A&P Exam 1 - Ch. 18 & 21

Front

Which term best describes the function of blood when considering the presence of carbon dioxide and endocrine hormones?

a) Regulation

b) Protection

c) Prevention

d) Transportation

Back

d) Transportation

Front

Oxygen-poor blood is _________ in color.

a) bright red

b) dark red

c) light blue

d) dark blue

Back

b) dark red

Front

Blood plasma is slightly _______; if pH drifts out of the normal range, dire consequences can result from alterations in the structure of _______ .

a) acidic, glucose

b) acidic, proteins

c) acidic, glycogen

d) basic, glucose

e) basic, proteins

Back

e) basic, proteins

Front

Typically, an adult's body contains _______ of blood.

a) 1 liter

b) 5 liters

c) 10 liters

d) 15 liters

Back

b) 5 liters

Front

When blood is centrifuged and its components separate, the bottom of the tube holds the

a) electrolytes and waste products.

b) buffy coat.

c) monocytes.

d) erythrocytes.

e) platelets.

f) plasma.

Back

d) erythrocytes.

Front

The clinical definition of the hematocrit refers to the percentage of

a) erythrocytes in the blood.

b) leukocytes in the blood.

c) platelets in the blood.

d) plasma in the blood.

e) all formed elements in the blood.

Back

a) erythrocytes in the blood.

Front

The most numerous of the formed elements are the

a) neutrophils.

b) platelets.

c) erythrocytes.

d) basophils.

e) albumins.

Back

c) erythrocytes.

Front

One of the functions of blood is to regulate fluid levels in the body. If too much fluid escapes from the bloodstream and enters the tissues, blood pressure will

a) increase.

b) decreases.

Back

b) decrease.

Front

Glucose is a

a) polar molecule, and therefore it dissolves readily in plasma.

b) polar molecule, and therefore it requires a transporter in the blood.

c) nonpolar molecule, and therefore it dissolves readily in plasma.

d) nonpolar molecule, and therefore it requires a transporter in the blood.

Back

a) polar molecule, and therefore it dissolves readily in plasma.

Front

The reason it is more appropriate to call an erythrocyte a “formed element” rather than a “cell” is that erythrocytes

a) are actually dead.

b) lack a nucleus and organelles.

c) have lots of inclusion molecules.

d) are not red.

e) can form a rouleau when moving through a capillary.

Back

b) lack a nucleus and organelles.