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Worksheets2.1.5 & 2.1.6 - Ventilation Control & Role of Hemoglobin
Total questions: 28
Worksheet time: 17mins
Identify which of the following are true:
Inspiration at rest is a passive process
Inspiration at rest is an active process
Inspiration during exercise is a passive process
Inspiration during exercise is an active process
Identify which of the following are true:
Expiration at rest is a passive process
Expiration at rest is an active process
Expiration during exercise is a passive process
Expiration during exercise is an active process
Where can we find the Pons & the Medulla?
(a)
Ventilation increases as a result of (select all that apply):
Increase in blood acidity
Decrease in blood acidity
Increase in pH
Decrease in pH
An increase in blood acidity is associated with an:
(select all that apply)
Increase in pH
Decrease in pH
Increase in Carbon Dioxide
Decrease in Carbon Dioxide
The respiratory centre consists of the:
Alveoli & Pulmonary Capillaries
Hemoglobin & Oxygen
Hemoglobin & Carbon Dioxide
Pons & Medulla
Neural control of ventilation includes:
Lung stretch receptors
Proprioceptors
Blood pH
Chemoreceptors
The elastic recoil in the lungs is brought about by messages sent to the respiratory centre from:
Chemoreceptors
Proprioceptors
Stretch receptors
Muscle receptors
Which respiratory control group controls the rate & depth of ventilation?
The ventral respiratory group (medulla)
The dorsal respiratory group
(medulla)
The pontine respiratory group (pons)
Which respiratory control group controls inspiration?
The ventral respiratory group (medulla)
The dorsal respiratory group
(medulla)
The pontine respiratory group (pons)
Which respiratory control group controls expiration?
The ventral respiratory group (medulla)
The dorsal respiratory group
(medulla)
The pontine respiratory group (pons)
Which type of respiratory receptors detect chemical changes in the blood?
Chemoreceptors
Proprioceptors
Stretch receptors
Joint receptors
Which type of respiratory receptors help us make sense of body position?
Chemoreceptors
Proprioceptors
Stretch receptors
Blood pH
Which type of respiratory receptors inhibit inspiration & stimulate expiration?
Chemoreceptors
Proprioceptors
Stretch receptors
Blood pH
When the diaphragm, external intercostals & accessory muscles begin contracting more forcefully and at a higher rate in order to increase inhalation during exercise, what receptors are responsible for delivering this information to the Respiratory Control Centre?
Chemoreceptors
Proprioceptors
Stretch receptors
Hemoglobin Molecules
When the rectus abdominis, internal intercostals & accessory muscles begin contracting more forcefully and at a higher rate in order to increase exhalation during exercise, what receptors are responsible for delivering this information to the Respiratory Control Centre?
Chemoreceptors
Proprioceptors
Stretch receptors
Hemoglobin Molecules
When carbon dioxide levels within the blood increase during exercise, which receptors deliver that information to the Respiratory Control Centre?
Chemoreceptors
Proprioceptors
Stretch receptors
Hemoglobin Molecules
Stretch receptors send a message to the Respiratory Control Centre which triggers inspiration
True
False
Stretch receptors send a message to the Respiratory Control Centre which triggers expiration after the lungs have been stretched
True
False
Stretch receptors prevent what from occurring to the lungs?
Elastic recoil at the end of an inhalation
Over-stretching of the lungs at the end of an inhalation
Atrophying of the lungs during inhalation
Residual volume levels from reaching critical levels
The role of hemoglobin is to:
Carry oxygen from the lungs to the bodies tissues
Return carbon dioxide from the tissues back to the lungs
Moisten the alveolar membrane to facilitate diffusion
Bind with oxygen to form oxyhemoglobin
Hemoglobin is made up of __ protein molecules (globin chains) that are connected together & function as the binding site for oxygen
1
2
3
4
During oxygen transportion:
The heart will pump deoxygenated blood from the right ventricle towards the lungs
The heart will pump deoxygenated blood from the left ventricle towards the lungs
The left ventricle pumps the oxygenated blood to the aorta which distributes the blood to the rest of the body
The right ventricle pumps the oxygenated blood to the aorta which distributes the blood to the rest of the body
During oxygen transportion:
O2 is inhaled & re-oxygenates the blood
CO2 is dropped off at the alveolus & exhaled out of the body
CO2 passes from the alveoli to the blood capillaries via process of diffusion
O2 passes from the bloodstream to the alveoli via process of diffusion
Deoxygenated blood is blood with
High concentration of O2 & low concentration of CO2
High concentration of CO2 & low concentration of O2
High concentration of both O2 & CO2
Low concentration of both O2 & CO2
Oxygenated blood is blood with
High concentration of O2 & low concentration of CO2
High concentration of CO2 & low concentration of O2
High concentration of both O2 & CO2
Low concentration of both O2 & CO2
Only about ___ of the oxygen we breathe in will diffuse directly into the bloodstream to be delivered to the body
0.5%
1.5%
3.5%
5%
___ of the oxygen we breathe in binds to hemoglobin and is then transported to the rest of the body
95%
96.5%
98.5%
99.5%
