Cardiovascular Levels of Organization I
Cardiovascular Levels of Organization I

Cardiovascular Levels of Organization I

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A question pack on the organization of the cardiovascular system from the Open Learning Initiative. Question pack 1 of 2.

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Cardiovascular Levels of Organization Q1

Which cell type would typically be the smallest?

A

red blood cell

B

white blood cell

C

platelet

Cardiovascular Levels of Organization Q2

Which of the following is not properly matched with its function?

A

platelets: hemostasis

B

leukocytes: Hemostasis

C

red blood cells: carry oxygen

D

white blood cells: Immune function

Cardiovascular Levels of Organization Q3

Which type of blood cell contains the greatest amount of iron?

A

granulocytes

B

red blood cells

C

leukocytes

D

agranulocytes

Cardiovascular Levels of Organization Q4

Which of the following do not have nuclei?

A

red blood cells

B

neutrophils (a type of granulocyte)

C

platelets

D

lymphocytes (a type of agranulocyte)

E

red blood cells and platelets

F

neutrophils and lymphocytes (both are types of leukocytes)

Cardiovascular Levels of Organization Q5

Select the letter representing the progenitor of the phagocytic white blood cells.

question description
A

A

B

B

C

C

D

D

E

E

Cardiovascular Levels of Organization Q6

Select the letter representing the progenitor cell that will give rise to cells that will provide specific immune response.

question description
A

A

B

B

C

C

D

D

E

E

Cardiovascular Levels of Organization Q7

Select the letter representing the progenitor cell that gives rise to the largest variety of blood cells.

question description
A

A

B

B

C

C

D

D

E

E

Cardiovascular Levels of Organization Q8

Which progenitor cell is not properly matched with its formed element?

A

Proerythroblasts - Basophils

B

Myeloblasts - Neutrophils

C

Lymphoblasts - Lymphocytes

D

Megakaryoblasts - Platelets

Cardiovascular Levels of Organization Q9

Endothelium are ______________.

A

specialized epithelial cells adapted to interact with blood

B

specialized nervous tissue cells adapted to interact with blood

C

specialized connective tissue cells adapted to interact with blood

Cardiovascular Levels of Organization Q10

Which of the following is not a function of endothelial cells?

A

immune response

B

form new blood vessels

C

stimulate clot formation

D

sensation of mechanical forces

Cardiovascular Levels of Organization Q11

The smooth muscle cells of the cardiovascular system ______________.

A

participate in immune functions

B

promote blood clotting

C

add strength to blood vessels.

D

transmit signals about the local chemical environment

Cardiovascular Levels of Organization Q12

______________ contributes to the ability of a blood vessel to return to its shape after it is compressed

A

Elatin

B

Collagen

Cardiovascular Levels of Organization Q13

______________ consists of molecules that are disorganized, entangled and crosslinked.

A

Elatin

B

Collagen

Cardiovascular Levels of Organization Q14

______________ prevents rupture of the blood vessel.

A

Elatin

B

Collagen

Cardiovascular Levels of Organization Q15

Which extracellular matrix protein allows for blood vessels to return to their original shape after passive compression or stretching?

A

Elastin

B

Collagen

Cardiovascular Levels of Organization Q16

Which extracellular protein is found in higher amounts in the tunica externa?

A

Elastin

B

Collagen

Cardiovascular Levels of Organization Q17

Blood is considered to be a connective tissue because it contains ______________.

A

neurons that can transmit signals.

B

a large amount of extracellular matrix and no cells.

C

hemoglobin to assist in transporting oxygen.

D

multiple cells types with significant extracellular matrix.

Cardiovascular Levels of Organization Q18

The extracellular matrix of blood normally makes up what percent of the blood volume?

A

25%

B

45%

C

55%

D

65%

Cardiovascular Levels of Organization Q19

Although the SA node can spontaneously depolarize, this rate is partially controlled by the autonomic nervous system. What affect does the parasympathetic nervous system have on the rate of SA node depolarization and what could be a mechanism for this effect?

A

decrease HR, close potassium channels

B

increase HR, open potassium channels

C

increase HR, close potassium channels

D

decrease HR, open potassium channels

Cardiovascular Levels of Organization Q20

Which of the following is not a cell of the myocardium?

A

pacemaker cells

B

myocardial cells

C

conducting cells

D

kratinized cells

Cardiovascular Levels of Organization Q21

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

Require neurotransmitters to depolarize

A

yes

B

no

Cardiovascular Levels of Organization Q22

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

Resting potential of -55mV

A

yes

B

no

Cardiovascular Levels of Organization Q23

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

Slow opening of T-type calcium channels

A

yes

B

no

Cardiovascular Levels of Organization Q24

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

Faster closure of potassium channels

A

yes

B

no

Cardiovascular Levels of Organization Q25

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

Depolarization occurs with opening of voltage-gated sodium channels

A

yes

B

no

Cardiovascular Levels of Organization Q26

Choose whether the following characteristic describes cardiac muscle cells (compared to skeletal muscle cells):

L-type calcium channels open to create an action potential

A

yes

B

no

Cardiovascular Levels of Organization Q27

Which of the following is correct?

A

Cardiac muscle cells rely on external calcium to create action potentials.

B

Skeletal muscle cells rely on external calcium to create action potentials.

C

Neural cells rely on external calcium to create action potentials.

D

None of these answers are correct.

Cardiovascular Levels of Organization Q28

Which of the following is not a characteristic that is shared by both cardiac muscle cells and skeletal muscle cells?

A

Require oxygen

B

T tubules

C

Intercalated discs

D

Sarcomeres

Cardiovascular Levels of Organization Q29

Which artery would you expect to have the greatest amount of elastin?

A

Renal artery, which delivers blood to the kidneys

B

Femoral artery, which is the main artery in the upper leg.

C

Aorta, which receives blood from the left ventricle.

Cardiovascular Levels of Organization Q30

Which layer has a high number of openings that allow for the movement of solutes?

A

tunica media

B

tunica externa

C

tunica interna

Cardiovascular Levels of Organization Q31

Which layer is composed of smooth muscle and connective tissue?

A

tunica media

B

tunica externa

C

tunica interna

Cardiovascular Levels of Organization Q32

Systemic circulation would include which two pieces of this double pump?

question description
A

body and lungs

B

heart and lungs

C

heart and body

Cardiovascular Levels of Organization Q33

The heart is connected to the rest of the body through the ______________.

A

systemic circulation

B

pulmonary circulation

C

hepatic portal circulation

D

septum

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