Cardiovascular & Respiratory Quiz Flashcards
Which two structures are part of the lower respiratory tract?
Alveoli and bronchioles
Which structures are found in the mediastinum?
Heart and esophagus
Surfactant is found in alveoli, it’s function is to… (hint: it’s a concern with premie babies and breathing)
Decrease surface tension, preventing alveoli from collapsing
The trachea is lined with:
Smooth muscle tissue, ciliated epithelium, keratinized epithelium, or tough fibrous tissue
Ciliated epithelium
Which structure generates the electrical signal that results in the repeated beating of the normal heart?
Sinoatrial node
SA node
Cardiac output (CO) is the amount of blood that leaves the left heart. CO is affected by…
HR and stroke volume
Heart sounds are generated by…
Closure of the heart valves
Electrocardiogram (ECG or EKG) shows…
Shows electrical currents moving across the heart
Largest artery in the body is…
Aorta
The chordae tendonae
Connect the AV valves to the heart muscle wall
Internal respiration is the exchange of oxygen and CO2 between
Tissue capillaries and cells of the body
T/F: An increased amount of CO2 in the blood will trigger the respiratory center of the brain to increase the rate of breathing
True
Describe a canine EKG reading.
P wave:
QRS wave:
T wave:
P wave: depolarization of atria
QRS wave: depolarization of ventricle contraction
T wave: repolarization of ventricles