lecture 16 practice questions

Question 1

Which of the following is NOT a major blood component?
a. Plasma
b. Plasma proteins
c. Platelets
d. Red blood cells
e. White blood cells

Answer 1

b. plasma proteins

Question 2

Which of the following is NOT a function of blood?
a. Protection of the body from microbes
b. Regulation of body temperature
c. Regulation of body’s hydration
d. Regulation of body’s pH
e. Transportation of substances to and from organs

Answer 2

c. regulation of body’s hydration

Question 3

Which of the following is NOT true about regulation of body temperature?
a. Body temperature is regulated by the Hypothalamus
b. When core body temperature decreases, the hypothalamus causes
vasoconstriction in the skin
c. When it gets colder, the body tries to minimize heat losses through the
body surface
d. When the core body temperature increases, hypothalamus causes
vasodilation in the skin
e. None - all of the above are true

Answer 3

e. none- all of the above are true

Question 4

Which of the following is NOT true about blood plasma?
a. It comprises over 90% of total blood volume
b. It contains clotting factors
c. It carries nutrients
d. It carries metabolites
e. It is a clear fluid, in which other blood components are suspended

Answer 4

a. it comprises over 90% of total blood volume

Question 5

Which of the following is NOT true about regulation of body temperature?
a. Body temperature is regulated by the Hypothalamus
b. When core body temperature decreases, the hypothalamus causes
vasoconstriction in the skin
c. When it gets colder, the body tries to minimize heat losses through the
body surface
d. When the core body temperature increases, hypothalamus causes
vasodilation in the skin
e. None - all of the above are true

Answer 5

e. none- all of the above

Question 6

Which of the following is NOT a part of Blood Plasma?
a. Transport proteins
b. Electrolytes
c. Platelets
d. Water
e. Glucose

Answer 6

c. platelets

Question 7

Which of the following is NOT true about Albumin?
a. It is a transport protein
b. It is made by the liver
c. It can regulate colloidal pressure by attracting water
d. It must be maintained at above 5.0 g/dl in blood

Answer 7

d. it must be maintained at above 5.0 g/dl in blood

Question 8

Which of the following is NOT true about Hypoalbuminemia?
a. It can be caused by severe protein malnutrition
b. It can lead to pitting edema
c. It can be caused by dehydration
d. It may cause water molecules to move from blood into interstitial spaces

Answer 8

c. it can be caused by dehydration

Question 9

Which of the following is NOT true about sodium in blood?
a. It attracts water by osmosis
b. Too much sodium may cause blood volume to expand
c. Sodium-induced hypertension is when blood pressure rises after a salty
meal
d. Both sodium and albumin regulate osmotic blood pressure
e. Sodium is the most abundant intracellular electrolyte

Answer 9

e. sodium is the most abundant intracellular electrolyte

Question 10

Which of the following is NOT true about platelets?
a. They are made in the red bone marrow
b. They are derived from megakaryocytes
c. They are special type of blood cells
d. They help create a temporary plug, when a blood vessel ruptures
e. They play an important role in hemostasis and thrombogenesis

Answer 10

c. They are special type of blood cells

Question 11

Which of the following is NOT true about hemostasis?
a. When a blood vessel ruptures, it constricts automatically by smooth
muscle contraction
b. Thromboxanes are released by damaged cells of the blood vessel
c. Thromboxanes attract and activate clotting factors
d. Platelets aggregate to create a temporary plug
e. Clotting factors glue the platelets together to create a more stable plug

Answer 11

b. thromboxanes attract and activate clotting factors

Question 12

Which of the following is NOT produced in the Bone Marrow?
a. Leukocytes
b. Erythrocytes
c. Thrombocytes
d. Clotting factors

Answer 12

d. clotting factors

Question 13

The exchange of molecules between blood and tissues happens across the
walls of:
a. Arteries
b. Arterioles
c. Veins
d. Venules
e. Capillaries

Answer 13

e. capillaries

Question 14

Vasoconstriction and vasodilation of arteries happens due to smooth muscle
contractions in:
a. Tunica intima
b. Tunica media
c. Tunica adventitia
d. All of these

Answer 14

b. tunica media

Question 15

These blood vessels that return blood to the heart are the closest to the
heart:
a. Arteries
b. Arterioles
c. Veins
d. Venules
e. Capillaries

Answer 15

c. veins

Question 16

The blood moves forward in veins due to:
a. Inner valves that prevent backward blood flow
b. Blood coming from arteries
c. Skeletal muscle contractions
d. All of the above

Answer 16

d. all of the above

Question 17

what do proteins attract

Answer 17

water

Question 18

what is blood composed of

Answer 18

RBC + WC + Platelets + Plasma

Question 19

the 4 blood components

Answer 19

1. blood plasma
2. red blood cells
3. platelets
4. white blood cells

Question 20

what does lack of albumin cause

Answer 20

causes edema

Question 20

what makes up a clot

Answer 20

RBC + Platelets + Fibrins

Question 21

What does the liver produce

Answer 21

1. Produces albumin
2. Forms bile/ captures bilirubin
3. Coagulation Factor
4. Detoxification

Question 22

what happens when there is no coagulation

Answer 22

you bleed out

Question 23

what happens with lack of bilirubin

Answer 23

jaundice

Question 24

no detoxification

Answer 24

LOC (level of conciousness)

Question 25

what are the functions of the blood

Answer 25

1. transports substances
2. immune system
3. stabilize