Physiology Final
Physiology Mastery Quiz
Test your knowledge in physiology with our comprehensive 50-question quiz! Covering essential topics such as respiratory fun
Whether you're preparing for exams or just want to challenge yourself, this quiz offers:
- Multiple-choice questions
- Immediate feedback on your answers
- Insight into your understanding of physiology
The term (ventilation) can be defined as:
Obtaining needed oxygen for the body.
Eliminating carbon dioxide from the body.
The integration between external and internal respiration.
Two answers are correct.
Which of the following is most likely related to the respiratory function?
The enhancement of venous return.
Vocalization.
PH buffering.
Defense.
Which of the following is a normal characteristic of lung?
Its volume changes increasingly due to inhalation.
It has 3,000,000 alveoli.
The volume of thorax changes consequently when its volume changes.
Its muscles are recruited to aid in breathing depending on activity level.
None of the above.
All of the following about abdominal wall muscles are incorrect EXCEPT:
They are quiet exhalation muscles.
They move the abdomen cranially.
They are the only active exhalation muscles.
Two answers are correct.
Their contractions decrease the vertical dimension of the thorax.
The intra-alveolar pressure:
Is always negative throughout quiet breathing.
Is atmospheric between inhalation and exhalation if there is no flow.
Two answers are correct.
The process of ventilation is dependent upon it.
Follows the intrapleural pressure closely.
Surface active agent:
Is produced by type II pneumocytes.
Production is slow.
Acts like detergents in water.
Increases pulmonary compliance.
Reduces the amount of negative intrapleural pressure.
Two answers are correct.
In quiet breathing, exhalation is:
Passive due to elastic connective tissue.
Active due to internal intercostal contractions.
Passive due to alveolar surface tension.
Passive due to diaphragm relaxation.
Two answers are correct.
A patient was diagnosed with a chronic airflow limitation, which of the following diagnoses, accordingly, would be correct?
An increased static compliance.
An increased TLC.
A decreased respiratory rate.
An increased VC.
A college-aged man was asked to breathe deeply in a spirometer with a respiratory rate of 12 (breaths/min), a pulmonary ventilation of about ------ ml/min, and an alveolar ventilation of ------ ml/min would be calculated from the spirogram. The values should be filled in the blanks, respectively, are:
6000, 4200
4200, 6000
6000, 5250
4200, 5250
None of the above.
The partial pressure of oxygen in dry air at sea level is:
159 mmHg
163 mmHg
149 mmHg
100 mmHg
Type II pneumocytes:
Develop from type I pneumocytes.
Are flat with minimal organelles.
Metabolize surfactant.
Bind surfactant to their borders.
Are macrophages.
Two answers are correct.
In the lung, airway resistance:
Is mainly in small airways.
Varies with changes in lung volume.
Can be measured by flow rate divided by pressure difference.
Is increased by sympathetic stimulation.
Which of the following concerning lung volumes and capacities of a person at rest is TRUE?
TLC > VC > TV > FRC
TLC > FRC > VC > TV
TLC > FRC > TV > VC
TLC > VC > FRC > TV
Which of the following does NOT happen during inspiration?
The ribs move upward.
The diaphragm lifts up.
The anteroposterior dimension can be increased.
Sternocleidomastoid muscle (SCM) can be recruited.
If a progressive lung disease sufferer was required to breathe at twice his normal rate, how would the compliance of his lungs be affected?
It would increase.
It would decrease.
It would stay the same.
Those variables do not affect lung compliance.
A 140-lb (63.5-kg) woman would have approximately how much dead space in her lungs?
140 ml
70 ml
280 ml
35 ml
Cannot be determined.
Halving airway diameter has the following effect on airway resistance: -According to laminar flow, r^4 leads to 16x. (not included)
A decrease of 1/8
A decrease of 1/4
A decrease of 1/2
An increase of 4 times.
An increase of 16 times.
When the weather is hot and you still drink a normal amount of water, the color of your urine should be?
Colorless
Pale yellow
Dark yellow
Can't be determined
One of the following is true about glomerular filtration:
A transport mechanism
Happens in the proximal tubule
It will filtrate all the plasma at the same time
Non-selective process
GFR equals:
180L/D
3L/H
125ml/H
100dl/m
What is the function of renin?
Convert angiotensin I to angiotensin II
Convert angiotensin I to aldosterone
Convert angiotensin II to aldosterone
None of these
If plasma proteins concentration in the plasma was 140mmol, then it's concentration in the filtrate will be:
70 mmol
140 mmol
0 mmol
Can't be determined
The right sequence of the reabsorbtion process is:
Tubules, basolateral membrane, luminal membrane, interstitial space, peritubular capillaries
Peritubular capillaries, interstitial space, basolateral membrane, luminal membrane, Tubules
Tubules, luminal membrane, interstitial space, basolateral membrane, Peritubular capillaries
Tubules, luminal membrane, basolateral membrane, interstitial space, Peritubular capillaries
Na+ reabsorption doesn't happen in distal tubules why?
There are no Na-K pumps
There are no luminal membranes
There is Na-K pumps
It happens in some cases
Reabsorption of glocose is:
Counter transport mechanism
Co-transport mechanism
Occurs only in Distal tubules
Happens only in loop of henle
The percentage of Urea reabsortion is:
0%
25%
50%
75%
Secretion procces initiate in:
Proximal and descending loop of henle
Proximal and ascending loop of henle
Peritubular capillaries
Distal tubule
Low serotonin cause :
Epilepsy
Depression
Parkinson disease
Schizophrenia
Parkinson disease :
Caused by high dopamine
Caused by low dopamine
Caused by low serotonin
Caused by increased glutamate
Which one is incorrect about glial cells :
Support neurons physically and metabolically
Maintain extracellular fluid
Can initiate action potential
Can divide
Considered as connective tissue
All of these are functions of the brain except :
Regulates internal environment
Experiences emotions
Voluntarily controls movements
Generate impulses to the heart to keep it working
All of these is correct about csf except :
Found in the subarachnoid space
Function as shock absorber
Decrease the feeling of brain's weight
Variable amount of CSF
Which one of these neurotransmitters is inhibitory :
Aspartate
Glutamate
(GABA)
Acetylcholine
Which of the following is true :
A-the sympathetic nervous system stimulates the release of enzymes that are needed in the GIT
B- the meissner's plexus lies between the Circular and longitudinal muscle of the muscularis
C-gastroesophageal sphincter aid in preventing gastrointestinal reflex
D-the most common used neurotransmitter in the git is the epinephrine
Which of the following salivary glands will be covered by the facial nerve?
A- parotid gland
B- submandibular gland
C-Sublingual gland
D-All of the following are considered right
After a fatty meal, most of the fat would be:
A. Absorbed in the portal circulation & transported to the liver
B. Absorbed in the portal vein & transported in the hepatic artery
C. Absorbed into chylomicrons in the lymphatics
D- absorbed as Triglycerides into portal vein & bypass the liver
Gastric emptying is slowest (OR: most prolonged) after consuming:
A. High protein meal
B. High fat meal
C. Alcohol
D. Calcium
A Hormone released from adipose tissue which inhibits the work of appetite (appetite inhibition) controller hormone ?
CCK
Ghrelin
Leptin
Secretin
Neurons that conduct nerve impulses from the receptors to the central nervous system are
Motor neurons.
Efferent neurons.
Interneurons.
Sensory neurons.
Processes that carry nerve impulses away from the cell body are called
Dendrites.
Axons.
Synapses.
Myelin sheaths.
The neuroglia that produce myelin sheaths around axons in the peripheral nervous system are
Schwann cells.
Oligodendrocytes.
Microglia
Astroctyes
The portion of the nervous system that is considered involuntary is the
Somatic nervous system.
Sensory nervous system.
Autonomic nervous system.
Motor nervous system.
All of the following are functions of the nervous system EXCEPT
Senses changes.
Analyzes changes.
Stores calcium.
Responses to changes.
The different charge between the outside and the inside of a neuron at rest is called
Action potential.
Synaptic potential.
Resting membrane potential.
Equilibrium potential.
The stage in an action potential that immediately follows depolarization is
Polarization.
Repolarization.
Threshold.
The resting period.
The junction between two nerve cells is called
Neuromuscular junction.
Neuroglandular junction.
Gap junction.
Synapse.
Neurotransmitters are released at the
Dendrite.
Axon terminal.
Cell body.
Myelin sheath.
In the reflex arc, a muscle or gland is considered to be the
Receptor.
Integrating center.
Motor neuron.
Effector.
The binding of cholera toxin irreversibly activates adenylate cyclase in the plasma membranes of crypt cells of the small intestine. This is most likely to cause:
Jaundice
Secretory diarrhea
Gallstones
Osmotic diuresis
Achalasia
Gastric acid secretion is most likely to be stimulated by:
GIP
Acetylcholine
Norepinephrine
Somatostatin
Secretin
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