Cardiovascular & Respiratory Quiz

Question 1

Which two structures are part of the lower respiratory tract?

Answer 1

Alveoli and bronchioles

Question 2

Which structures are found in the mediastinum?

Answer 2

Heart and esophagus

Question 3

Surfactant is found in alveoli, it’s function is to… (hint: it’s a concern with premie babies and breathing)

Answer 3

Decrease surface tension, preventing alveoli from collapsing

Question 4

The trachea is lined with:
Smooth muscle tissue, ciliated epithelium, keratinized epithelium, or tough fibrous tissue

Answer 4

Ciliated epithelium

Question 5

Which structure generates the electrical signal that results in the repeated beating of the normal heart?

Answer 5

Sinoatrial node
SA node

Question 6

Cardiac output (CO) is the amount of blood that leaves the left heart. CO is affected by…

Answer 6

HR and stroke volume

Question 7

Heart sounds are generated by…

Answer 7

Closure of the heart valves

Question 8

Electrocardiogram (ECG or EKG) shows…

Answer 8

Shows electrical currents moving across the heart

Question 9

Largest artery in the body is…

Answer 9

Aorta

Question 10

The chordae tendonae

Answer 10

Connect the AV valves to the heart muscle wall

Question 11

Internal respiration is the exchange of oxygen and CO2 between

Answer 11

Tissue capillaries and cells of the body

Question 12

T/F: An increased amount of CO2 in the blood will trigger the respiratory center of the brain to increase the rate of breathing

Answer 12

True

Question 13

Describe a canine EKG reading.
P wave:
QRS wave:
T wave:

Answer 13

P wave: depolarization of atria
QRS wave: depolarization of ventricle contraction
T wave: repolarization of ventricles