Quiz 4

Question 1

What is an advantage of breathing through the nose?

Answer 1

More Filtration and Increased warming

Question 2

Deoxygenated blood can be found in which vessels?

Answer 2

Systemic veins and Pulmonary arteries

Question 3

If CO2 removal is impaired, and the CO2 accumulates in the blood, what is the effect on the bicarbonate buffer system?

Answer 3

The bicarbonate buffer system is shifted to the right , and there is a decrease in hydrogen ions and bicarbonate production

Question 4

What describes pulse pressure?

Answer 4

Systolic pressure minus diastolic pressure

Question 5

What would contribute to an increase in resistance to flow through a blood vessel?

Answer 5

• Increased length of the vessel
• increased viscosity of the fluid
• decreased radius of the vessel

Question 6

Define Tidal Volume

Answer 6

tidal volume is the volume of air that is being breathed in and out during a normal breath (during rest)

Question 7

Define Vital Capacity

Answer 7

is the inspiratory reserve volume + expiratory reserve volume + tidal volume is the maximum amount of air that can be moved into or out of the respiratory system. this vital capacity decreases as we age.

Question 8

Why physiological phenomenon is responsible for the delay between atrial and ventricular contraction? Why is this delay important for cardiac function.

Answer 8

The AV node
This delay is important to ensure that the ventricles fill with the blood. The Av node slows down transmission to allow for the atria to complete its contraction to pump blood into the ventricles before a ventricular contraction begins

Question 9

P wave

Answer 9

Atrial depolarization

Question 10

QRS complex

Answer 10

ventrciular depolarization

Question 11

T wave

Answer 11

Ventrciular Repolarization

Question 12

PQ segment

Answer 12

end of atrial depolarization to start of ventricular depolarization

Question 13

ST-segment

Answer 13

end of ventricular depolarization to start of ventricular repolarization

Question 14

Hemoglobin is an important factor in the transport of oxygen in the blood. What are two other factors that improve the transport of oxygen in the blood?

Answer 14

Lower temperature and PCO2

Question 15

Where is the baroreceptor located that would sense changes in pressure to the brain?

Answer 15

Carotid Sinus

Question 16

Which term accurately describes the ability of a lung to expand and receive more air from the environment?

Answer 16

compliance

Question 17

The systemic arteries carry ______ blood and the pulmonary veins carry ________ blood.

Answer 17

oxygenated; oxygenated

Question 18

Which trigger would cause an increase in temperature and PCO2, as well a decreased pH; this would result in a change to hemoglobin binding.

Answer 18

exercise

Question 19

Central Chemoreceptors tend to respond to which triggers?

Answer 19

pH and CO2

Question 20

arteries acts as a ________

Answer 20

pressure reservoir

Question 21

veins typically acts as _________

Answer 21

volume reservoir

Question 22

Which muscles would contract during heavy exercise to force expiration

Answer 22

Internal intercostals

abdominal muscles

Question 23

What is the correct order of the valves that blood passes through as it travels from the right atrium through the heart?

Answer 23

tricuspid, pulmonary, bicuspid, aortic

Question 24

What are the three steps to maintain haemostasis?

Answer 24

1. Constriction of blood vessels
2. Platelet Plug
3. Coagulation `

Question 25

what would cause an increase in hematocrit

Answer 25

• uncontrolled erythropoiesis
• dehydration
• living in high altitude conditions

Question 26

Which leukocyte develops into a macrophage that engulfs and ingests foreign particles through phagocytosis after leaving circulation?

Answer 26

Monocytes