Tagnawa BSWR (Physiology) Flashcards
Glottis is open but no air flow. Compare atmospheric pressure to the respiratory bronchial tree.
a. Greater
b. Lesser
c. Equilibrium
d. No change
C. Equilibrium
When the glottis is open and no air is flowing into or out of the lungs, the pressures in all parts of the respiratory tree, all the way to the alveoli, are equal to atmospheric pressure, which is considered to be zero reference pressure in the airways—that is, 0 cm H2O pressure.
What causes pleural pressure
a. Transpulmonary
b. Excess production of intercellular fluid
c. Alveolar pressure
d. Lymphatic drainage
A. and C
Aside from the soluble coefficient of a particular gas, what other factor affects the partial pressure of a gas?
a. Temperature
b. Concentration of the gas
c. pH of the mixture
d. Partial pressure of other gases in the mixture
b. Concentration of the gas
What is the effect of oxygen to the respiratory center?
a. Increase stimulatory effect
b. Decrease stimulatory effect
c. No stimulatory effect to the respiratory center of the brain
d. None
b. Decrease stimulatory effect
Which is not a composition of bile?
a. Water
b. Phosphatidylcholine
c. Cholesterol
d. Lipase
D. Lipase
Intrinsic factors is secreted by the parietal cells and are important in the absorption of
a. Vit B1
b. Vit B3
c. Vit B6
d. Vit B12
d. Vit B12
Site of bile synthesis
a. Liver
b. Bile duct/ Biliary tree
c. Gallbladder
d. Distal stomach
a. Liver
Deficiency or absence of the parietal walls will cause what type of anemia
a. Pernicious anemia
b. Intrinsic factor deficiency anemia
c. Iron deficiency anemia
d. Nutritional anemia
a. Pernicious anemia
The brown pigment in feces is caused by
a. Bilirubin
b. Food pigments
c. Urobilin
d. Bacterial product
d. Bacterial product
Resting membrane potential of gut smooth muscle
a. -60 - -70 mV
b. -50 - -60 mV
c. -40 mV
d. -20 - 50 mV
b. -50 - -60 mV
This reflex signals the stomach to cause evacuation in the colon
a. Gastrocolic
b. Ileocolic
c. Enterogastric
d. Defecation reflex
a. Gastrocolic
The vitamin that is formed in the gut colon which is also important in blood coagulation
a. Vitamin A
b. Vitamin K
c. Vitamin B
b. Vitamin K
When the potassium ion channels are opened and sodium ion channels are closed, and there is a continuous efflux of potassium, the cell membrane becomes
a. Depolarized
b. Repolarized
c. Hyperpolarized
d. Goes back to resting membrane potential
b. Repolarized
The ion responsible for the repolarization of nerve.
A. Ca influx
B. K efflux
C. Influx of K
D. Efflux of Na
B. K efflux
This neurotransmitter is release at the axon terminal of the somatic motor neuron and responsible for the excitation of skeletal muscle at the beginning of the excitation phase.
A. Acetylcholine
B. Norepinephrine
C. GABA
D. Glutamate
A. Acetylcholine
It is the event where actin-myosin-ADP-Pi complex triggers the release of phosphate and ADP that causes changes in myosin and myosin head complex
A. Detachment of myosin head of cross bridge from the active site of an actin filament
B. Initiation of cross bridge cycling
C. Reactivation of myosin head
D. Power stroke
E. Formation of actin-myosin complex
D. Power stroke
It is responsible for the detachment of myosin head of cross bridge from the active site of an actin filament due to changes of affinity of myosin head to the actin binding site.
a. ATP hydrolysis
b. Phosphate
c. ATP
d. ADP
C. ATP
This type of skeletal muscle contraction seen when tension is the only factor that changes?
a. Concentric isotonic contraction
b. Eccentric isotonic contraction
c. Isometric contraction
d. Both A and B
a. Concentric isotonic contraction
Which of the following has the largest total cross sectional area in the body?
A. Arteries
B. Venules
C. Capillaries
C. Capillaries
The patient came in with left sided weakness. The resident doctor asked you to compute his MAP. The blood pressure is 140/100. What is the patient’s MAP?
A. 126
B. 80
C. 120
D. 113
D. 113
Activation of sympathetic nervous system produce the following except:
A. Coronary dilation
B. Peripheral vasoconstriction
C. Activation of renin angiotensin II
D. All are true
D. All are true
Which of the following is true?
a. Venous system are 6x more distensible than arterial system
b. Pulmonic and systemic venous circulation has similar distensibilities
c. Pulmonic arteries are about 8x more distensible than systemic arteries
d. AOTA
b. Pulmonic and systemic venous circulation has similar distensibilities
Which change tends to increase GFR?
a. Increase afferent arterial resistance
b. Decreased efferent arteriolar resistance
c. Increase glomerular capillary coeffcient
d. Increase Bowman’s capsule hydrostatic pressure
e. Decrease glomerular hydrostatic pressure
c. Increase glomerular capillary coeffcient
A 48-year-old woman reports severe polyuria (producing about 0.5 liter of urine each hour) and polydipsia (drinking two to three glasses of water every hour). Her urine contains no glucose, and she is placed on overnight water restriction for further evaluation. The next morning, she is weak and confused, her sodium concentration is 160 mEq/L, and her urine osmolarity is 80 mOsm/L. Which of the following is the most likely diagnosis?
a. Diabetes mellitus
b. Diabetes insipidus
c. Primary aldosteronism
d. Renin secreting tumor
e. SIADH
b. Diabetes insipidus
Changes expected in a dehydrated person deprived of water for 24 hours
a. Decreased plasma renin
b. Decreased plasma ADH
c. Increased plasma ANP
d. Increased water permeability in ascending loop of Henle
e. Increased water permeability in collecting ducts
e. Increased water permeability in collecting ducts
A 22-year-old woman runs a 10-kilometer race on a hot day and becomes dehydrated. Assuming that her ADH levels arevery high and that her kidneys are functioning normally, in which part of the renal tubule is the most water reabsorbed?
a. PCT
b. Loop of Henle
c. DCT
d. Cortical collecting tubule
e. Medullary collecting tubule
a. PCT
A 26-year-old construction worker is brought to the emergency department with a change in mental status after working a 10-hour shift on a hot summer day (average outside temperature was 97°F [36°C]). The man had been sweating profusely during the day but did not drink fluids. He has a fever of 102°F [39°C], a heart rate of 140 beats/min, and a blood pressure of 100/55 mm Hg in the supine position. Upon examination, he has no perspiration, appears to have dry mucous membranes, and is poorly oriented to person, place, and time. Assuming that his kidneys were normal yesterday, which set of hormone levels describes his condition, compared with normal?
a. High ADH, high renin, low angiotensin II, low aldosterone
b. Low ADH, low renin, low angiotensin II, low aldosterone
c. High ADH, low renin, high angiotensin II, low aldosterone
d. High ADH, high renin, high angiotensin II, high aldosterone.
e. Low ADH, high renin, low angiotensin II, high aldosterone
d. High ADH, high renin, high angiotensin II, high aldosterone.
A 55-year-old male patient with hypertension has had his blood pressure reasonably well controlled by administration of a thiazide diuretic. At his last visit (6 months ago), his blood pressure was 130/75 mm Hg and his serum creatinine was 1 mg/100 ml. He has been exercising regularly for the past 2 years but recently has reported knee pain and began taking large amounts of a nonsteroidal anti-inflammatory drug. When he arrives at your office, his blood pressure is 155/85 mm Hg and his serum creatinine is 2.5 mg/100ml. What best explains his increased serum creatinine level?
a. Increase in efferent arteriole pressure that decrease GFR
b. Increase in afferent arteriole pressure that decrease GFR
c. Increase glomerular capillary coefficient that decrease GFR
d. Increase angiotensin II that decreases GFR
e. Increase in muscle mass due to exercise
b. Increase in afferent arteriole pressure that decrease GFR
Under conditions of normal renal functions, which is true about the urea concentration of tubular fluid in the proximal tubule?
a. Higher than the urea concentration of the tubular fluid on the tip of the loop of Henle
b. Higher than the urea concentration in plasma
c. Higher than the urea concentration at the urine of antidiuresis
d. Lower than the plasma urea
b. Higher than the urea concentration in plasma
What are the special conditions that causes intracellular swelling, EXCEPT:
a. Decrease nutrition of tissue
b. Abnormal leakage of fluid
c. Hyponatremia
d. Depression of metabolic system of tissues
b. Abnormal leakage of fluid
What causes an increase in anion gap?
a. Diabetes mellitus
b. Diarrhea
c. Starvation
d. Chronic Renal Failure
a. Diabetes mellitus
All are causes of metabolic alkalosis, EXCEPT?
a. Diabetes mellitus
b. Excess aldosterone
c. Ingestion of alkaline drugs
d. Antidiuretic hormone
a. Diabetes mellitus
What is the characteristics of a primary simple respiratory acidosis, EXCEPT:
a. Decrease pH
b. Decrease HCO3 concentration.
c. Increase pCO2
d. Increase H+ concentration
b. Decrease HCO3 concentration.