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Module 13 quiz:
1- Underlying arterial PO2 conditions can affect both the threshold and sensitivity of a carbon dioxide-driven chemoreflex response.
True False
2- Which region of the brainstem seems to be the most important for
stimulating baseline breathing patterns?
PRG Pneumotaxic center Apneustic center DRG & VRG
3- The general purpose of the respiratory chemoreflex is to:
Stimulate an increase in ventilation Bring in more oxygen in response to hypoxemia Get rid of more carbon dioxide in response to hypercapnia and acidosis
All of these are purposes of the respiratory chemoreflex None of these is a purpose of the respiratory chemoreflex
4- The DRG only contains inspiratory neurons, while the VRG contains both inspiratory and expiratory neurons.
True False
5- Central chemoreceptors are more sensitive and responsive to small fluctuations in arterial PCO2 around its homeostatic set point vs. small fluctuations in pH around its homeostatic set point. (In other words, pH must experience a more dramatic departure away from set point before the chemoreflex will exhibit
a similar responsiveness.)
True False
6- The Hering-Breuer reflexes apply to quiet tidal breathing, not deeper forced breathing.
True False
7- The Hering-Breuer deflation reflex:
Helps determine functional residual
capacity in neonates Is functionally absent in adults Contributes to air trapping and alveolar collapse in COPD patients Stimulates the onset of tidal expiration
8- The Hering-Breuer inflation reflex is most physiologically relevant in healthy adult populations.
True
False
9- Which respiratory region of the
brainstem receives incoming sensory information?
DRG VRG PRG Apneustic center
10- Hydrogen ions cannot cross the blood-brain barrier, thus central chemoreceptors are only sensitive to PCO2.
True False
11- Which chemoreceptor location
is the most important for sensing hypercapnia and acidosis?
Carotid bodies
Aortic bodies
Ventrolateral medulla
All of these locations are equally critical for sensing hypoxemia
12- Which chemoreceptor location
is the most important for sensing hypoxemia?
Carotid bodies
Aortic bodies
Ventrolateral medulla
All of these locations are equally critical for sensing hypoxemia 13- Glomus cell firing rates in response to falling arterial PO2 values can be influenced by local pH but are completely independent of arterial PCO2 conditions.
True
False
14- Which of the following terms could be reasonably applied to describe a state of deeper and/or faster breathing?
Hypoventilation
Hyperventilation
Eupnea
Apnea
15- Which of the following statements about respiratory mechanoreflexes is FALSE?
There is a lot of information readily
available about many different respiratory mechanoreflexes—they have been the subject of extensive research recently They can sense physical stimuli in both the upper and lower airways In addition to the presence of air, these reflexes can also be stimulated by liquid and solid material The Hering-Breuer reflexes are a type of stretch reflex
16- Which cell in the carotid bodies is the actual sensor for detecting abnormal arterial gases and pH?
Glomus cell
Sustentacular cell
Glossopharyngeal nerve afferent neuron
Vagus nerve afferent neuron
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Related Questions
Work 2. Spirographia in the state of rest and after
exercise.
Чоловік 27 років
Bara 57 Kr
Зріст 156 см
18
1 хвилина
Researched parameters
Tidal volume
Frequency of
respiratory movements
Minute lungs
ventilation (MLV)
In rest
1 minute
●
Conclusion: Which
regulatory mechanisms
promote the increase of
MLV during exercises
The results of the work:
After exercises
2minute
2minute
Forth
minute
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Activity 3: Tell Me
How does the respiratory and circulatory systems work together to transport oxygen to and from the
different parts of the body?
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Assignment
Complete the following objectives:
Describe the direction of gas movement at
the lungs and at the tissues:
o Include partial pressure gradients of
gasses in the alveoli and in the blood
near the lungs (at the arterial & venous
end)
o Include partial pressure gradients of
gasses in the tissue fluid and in the
blood near the tissues (at the arterial
and venous end)
• Describe how gas is transported in the
blood:
o Include all methods of oxygen
transport
o Include all methods of carbon dioxide
transport
- Describe the Haldane Effect
- Describe how the transport of
carbon dioxide via bicarbonate
ions affects the pH
- Describe the Oxygen-Hemoglobin
Dissociation Curve
- Describe how the Bohr
Effect and Temperature
affect the curve
SIDE NOTE: Describe is defined as "give an
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Lung compliance study
Part I: If a patient generates a negative pleural
pressure change of -8 cm H,O during
inspiration, and the lungs accept a new volume
of 630 mL, what is the compliance of the lungs?
Part II: If the same patient, 6 hours later,
generates a pleural pressure of – 12 cm H,0
during inspiration, and the lungs accept a new
volume of 850 mL, what is the compliance of
the lungs?
Part IlI: In comparing Part Il to Part I, the patient's
lung compliance is
A. increasing.
B. decreasing.
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DATA ANALYSIS
1. Describe the changes in respiratory rates, tidal volumes, and minute ventilations that
occurred after each of the following physiologic challenges in terms of CO, levels and
their effect on respiratory drive:
a. Breath holding
b. Exercise
2. Which challenge caused the greatest change in respiratory rate (pre-challenge versus post
challenge)? Did minute ventilation change? Did respiratory rate or tidal volume change
the most relative to its resting value? Explain.
3. Some patients with severe emphysema have constant high levels of CO₂ because of
inadequate ventilation. The central nervous system breathing center in these patients
becomes insensitive to CO2 and more dependent on the level of O2, which is low. These
patients are said to have "oxygen-dependent respiratory drive". What might happen to
their breathing pattern if you gave such a person high levels of supplemental O2? Would
levels of CO2 in the blood go up or down? Explain.
4. Would breathing pure O₂ change…
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4th Quarter Activity 4
Instructions
Instructions
Direction: Answer the following questions in paragraph form consist of at least five sentences.
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2. Define the Lungs: Bronchi and Alveoli and give its function.
3. Explain and elaborate what is the respiratory system and circulatory system. Give its similarities, differences and its function.
4. Differentiate intrinsic and extrinsic homeostasis system.
5. Define the different system based on the discussion.
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Name:
Due for submission on Monday 11/13/23
(Print your full name clearly)
1.
Given a 63 inch female with a RR-14, PaCO2-44 mm hg and PECO2-27 mmHg.
Calculate for the following:
• VDANT-
• VT-
• VD/VT =
⚫ VD PHYS.=
• VAlv. (Alveolar Volume)
⚫ VAlv. Minute Alveolar Volume)
VDALV = (Alveolar Deadspace volume)
VDALV =(Minute Alveolar Deadspace Volume)
OHS
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3
MAY
5
BIO 135: Basic Anatomy & Physiology
Chapter 14: Respiratory System
Q
2
ii. The
inferior portion that sits on the diaphragm.
The right lung has,
lobes, while the left lung has,
The right and left bronchi enter each lung at the
the
known as
iii.
iv.
is the superior tip of the lungs, while the
sac.
v. The ability of the lungs to stretch and recoil is due to their
connective tissues.
vi.
The serous membrane that adheres to the surface of each lung is called
g. Alveoli:
vii.
The serous membrane that lines the cavity that houses the lungs is called
viii.
The potential space between the two membranes that contains serous fluid that
reduces friction when you breathe in and out and creates surface tension is
called the
i. Alveolar sacs are composed of
epithelium.
átv
along with
arteries. These arteries branch into microscopic vessels
that surround each air
lobes.
C
F6
1. What is the function of this tissue?
ii. The air sacs also contain a thin layer of water-based interstitial fluid.…
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Response me.
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Respiration - Post-Lab Questions i
APA
on Gene...
Saved
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Save &
Complete each sentence with the correct word and place the sentences in order to correctly describe the steps of inspiration.
equal
Drag the text blocks below Into their
correct order.
When the pressure in the lungs is
to the atmospheric
recoil
pressure inhalation stops.
Print
greater than
out of
Air flows
the lungs.
into
relax
Respiratory muscles
increases
decreases
Air pressure in the lungs
gets smaller
gets larger
The chest cavity
contract
expand
less than
The lungs
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