Font size
WorksheetsRESPIRATORY QUIZ
Total questions: 21
Worksheet time: 16mins
The majority of carbon dioxide is transported in plasma as:
carboxyhemoglobin
carbonic acid
carboaminohemoglobin
bicarbonate ion
Which of the following statments about CO2 is INCORRECT?
Hypoventilation increases its concentration in the blood
There is more CO2 dissolved in the blood plasma than is carried in the RBCs.
Concentration of CO2 is greater in systemic venous blood than pulmonary venous blood.
When it accumulates in the blood, pH will decrease
Select the correct statement about oxygen transport in blood.
If blood returning to the lungs has a 50% oxygen saturation level, it could indicate increased tissue metabolism.
A molecule of hemoglobin returning to the lungs during normal activity would carry one molecule of O2.
When a patient is in acidosis, hemoglobin is able to carry oxygen more efficiently.
When H+ levels are increased, RBCs have increased oxygen-carrying capacity.
The chemoreceptors in the aorta are most sensitive to changes in blood:
O2 concentration
H+ concentration
CO2 concentration
During normal breathing, what is the stimulus for increasing breathing rate and depth?
decreased oxygen level in the blood
increased carbon dioxide levels in the blood
increased blood pH
decreased hydrogen ion levels in the blood
Why are the effects of CO2 and H+ on breathing are similar?
both are positively charged ions
both elevate pH levels
CO2 combines with water to form H2CO3 which releases H+
H+ combines with water to form CO2
The amount of oxygen released from hemoglobin increases:
during hypercapnia
when CO2 concentration increases
if pyrogens are released
if blood becomes more acidic
The dorsal and ventral respiratory groups are located in the:
cerebellum
thalamus
hypothalamus
medulla oblongata
Atmospheric pressure is around (a) mmHg.
Cutting the phrenic nerve will result in:
Paralysis of the epiglottis
Air entering the pleural cavity
Stimulation of the diaphragmatic reflex
Paralysis of the diaphragm
Which brain cell respiratory center is thought to generate the respiratory rhythm?
ventral respiratory group
dorsal respiratory group
pontine respiratory group
The medulla oblongata and (a) have an important role in autonomic functions for the cardio and respiratory system
Autonomic ______ in the brainstem _______ breathing activity.
(a)
The 1st aspect of breathing is the contraction and ______ of ________ muscles
(a)
________ occurs during contraction and exhaling occurs during _______
(a)
For the 2nd aspect, volume changes occur within the (a) cavity
Pressure _________ due to the _______ in volume is the 3rd aspect.
(a)
The 4th aspect, A pressure (a) is always established.
The 5th aspect, air flows down pressure gradient ________ to _______
(a)
During inspiration, air flows from (a) to lungs
During exhalation, air flows from (a) to atmosphere
