Question 1

A thrombus is a clot floating in the circulation.

Accepted Answer

A) True 
 B)False

Question 2

The enzyme that activates fibrinogen is ____________________.

Accepted Answer

The answer of The enzyme that activates fibrinogen is ____________________....

Question 3

Match the leukocytes, labelled a. through e., with their correct characteristic. (Options may be used more than once or not at all.)
a.neutrophils
b.eosinophils
c.basophils
d.monocytes
e.lymphocytes
-destroy parasitic worms

Accepted Answer

The answer of Match the leukocytes, labelled a. through e.,...

Question 4

Which of these statements correctly describes the extrinsic clotting pathway?

Accepted Answer

A) It is set off by factor XII. 
B) It clots blood in tissues. 
C)  It has more steps than the intrinsic pathway. 
D)  It is set off when Hageman factor comes into contact with collagen in an injured vessel.

Question 5

Match these blood disorders labelled a. through h. with their characteristics. (Options may be used more than once or not at all.)
a.aplastic anaemia
b.pernicious anaemia
c.haemolytic anaemia
d.haemorrhagic anaemia
e.polycythaemia
f.leukaemia
g.neutrophilia
h.sickle cell anaemia
-associated with acute loss of blood

Accepted Answer

The answer of Match these blood disorders labelled a. through...

Question 6

What does haemophilia result from?

Accepted Answer

A) a deficiency of platelets 
B) inadequate haemoglobin production 
C)  vitamin B12 deficiency 
D)  inability to produce one of the factors in the clotting cascade

Question 7

If the haematocrit is 40, then which of the following volumes is represented correctly?

Accepted Answer

A) Red blood cells comprise 60 percent of the total blood volume. 
B) White blood cells comprise 40 percent of the total blood volume. 
C)  Red blood cells comprise 40 percent of the total blood volume. 
D)  Plasma and cellular elements other than red blood cells comprise 40 percent of the total blood volume.

Question 8

Which of the following is correct for plasmin?

Accepted Answer

A) It disposes of fibrin. 
B) It inhibits red blood cell production. 
C)  It is a cofactor in blood clotting. 
D)  It stimulates fibrin production.

Question 9

What are the different types and functions of plasma proteins?

Accepted Answer

The answer of What are the different types and functions...

Question 10

Which of the following is NOT found within erythrocytes?

Accepted Answer

A) carbonic anhydrase 
B) glycolytic enzyme 
C)  haemoglobin 
D)  mitochondria

Question 11

Which of the following slowly dissolves clots?

Accepted Answer

A) tissue thromboplastin 
B) prostacyclin 
C)  plasmin 
D)  calcium

Question 12

Match the leukocytes, labelled a. through e., with their correct characteristic. (Options may be used more than once or not at all.)
a.neutrophils
b.eosinophils
c.basophils
d.monocytes
e.lymphocytes
-the most abundant type of granulocyte

Accepted Answer

The answer of Match the leukocytes, labelled a. through e.,...

Question 13

The buffy coat, which represents < 1 percent of whole blood, is comprised of _______________.

Accepted Answer

A) erythrocytes and platelets 
B) leukocytes and platelets 
C)  leukocytes and clotting factors 
D)  platelets and clotting factors

Question 14

Which of the following applies to aplastic anaemia?

Accepted Answer

A) There is insufficient haemoglobin formation due to iron deficiency. 
B) There is an acute loss of blood. 
C)  Destruction of the bone marrow has occurred, due possibly to toxic chemicals or radiation. 
D)  The stomach secretes inadequate intrinsic factor, which is essential for intestinal absorption of vitamin B12.

Question 15

An increase in the circulating number of which cell type is associated with parasite infestation?

Accepted Answer

A) neutrophils 
B) eosinophils 
C)  basophils 
D)  lymphocytes

Question 16

Per cubic millimetre, white blood cells are more numerous than red blood cells.

Accepted Answer

A) True 
 B)False

Question 17

What advantages does the biconcavity of the erythrocyte impart on the cell?

Accepted Answer

A) It increases the overall surface area. 
B) It decreases the flexibility of the cell. 
C)  It prevents toxins from entering the cell. 
D)  It increases blood osmolarity.

Question 18

Match the haemostasis steps, labelled a. through j., with their correct characteristic(s). (Options may be used more than once or not at all.)
a.converts fibrinogen to fibrin
b.When platelets come into contact with this substance in an injured vessel wall, it causes them to adhere and aggregate.
c.When activated, this substance digests the fibrin threads, causing dissolution of the clot.
d.substance released by the platelet plug that causes more platelets to aggregate
e.first step in haemostasis
f.forms the meshwork of the clot
g.a plasma protein activated by factor X
h.second step in haemostasis
i.released from injured tissues; activates extrinsic clotting pathway
j.third step in haemostasis
-formation of a platelet plug

Accepted Answer

The answer of Match the haemostasis steps, labelled a. through...

Question 19

Which of the following statements correctly describes erythrocytes?

Accepted Answer

A) They contain many nuclei. 
B) They survive an average of 150 days. 
C)  They do not have the ability to use O2 for energy production despite the fact that they transport O2 to all the other tissues of the body. 
D)  They are inflexible.

Question 20

Which of the following organs produces the hormone that controls erythropoiesis?

Accepted Answer

A) pancreas 
B) brain 
C)  heart 
D)  kidney

Exam 9: Cardiac Physiology