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Physiology Practice Test 1 Flashcards

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1
Q
  1. Nerve impulses are propagated by which of the following?
    a. Nissl substance
    b. Axoplasm
    c. Microtubules
    d. Axolemma
A

d. Axolemma

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2
Q
  1. Which of the following occurs to the respiratory reflex as the person begins to swallow?
    a. Pharynx closes during swallowing
    b. Pharynx closes prior to swallowing
    c. Esophagus closes during swallowing
    d. Esophagus closes prior to swallowing
A

b. Pharynx closes prior to swallowing

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3
Q
  1. Which of the following is the cause of edema?
    a. Low plasma protein levels
    b. High protein plasma levels
    c. High plasma potassium levels
    d. Low intestinal plasma level
A

a. Low plasma protein levels

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4
Q
  1. ______ activates during smooth muscle contraction.
    a. Myosin
    b. Actin
    c. Calmodulin
    d. Tropomyosin
A

c. Calmodulin

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5
Q
  1. Water is first absorbed in the ______ in relation to the loop of Henle.
    a. Ascending loop of Henle
    b. Descending loop of Henle
    c. Proximal convoluted tubules
    d. Collecting ducts
A

c. Proximal convoluted tubules

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6
Q
  1. Which of the following cranial nerves is associated with the Hering-Brewer reflex?
    a. V
    b. IX
    c. X
    d. XI
A

c. X

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7
Q
  1. The cascading effect of protein digestion in the small intestine is initiated by ______.
    a. Cholecystokinin
    b. Trypsin
    c. Enterokinase
    d. Hydrochloric acid
A

c. Enterokinase

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8
Q
  1. Norepinephrine is a catecholamine that is derived by the conversion of ______.
    a. Epinephrine
    b. Dopamine
    c. Tyrosine
    d. L-Dopa
A

b. Dopamine

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9
Q
  1. Functional residual capacity is made up pf which of the following?
    a. Inspiratory reserve and tidal volume
    b. Tidal volume and residual volume
    c. Vital capacity and residual volume
    d. Expiratory reserve and residual volume
A

d. Expiratory reserve and residual volume

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10
Q
  1. Where is extra calcium stored for muscle contraction?
    a. T-tubules
    b. Sarcoplasm
    c. Extracellular
    d. Post synaptic knob
A

b. Sarcoplasm

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11
Q
  1. The seminiferous glands are specialized to perform which specific function?
    a. Produce testosterone
    b. Produce prostatic fluid
    c. Produce inhibin
    d. Produce sperm
A

d. Produce sperm

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12
Q
  1. When there is loss of QRS complex on EKG, without lengthening of the P-R interval it is known as ______.
    a. Wenckebach’s phenomenon
    b. Mobitz II
    c. Complete heart break
    d. Mobitz I
A

b. Mobitz II

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13
Q
  1. Which of the following is not involved in the Tetralogy of Fallot?
    a. Dextrorotation of the pulmonary artery
    b. Aorta coming off the right ventricle
    c. Hypertrophy of the right ventricle
    d. Failure of the septum between the right and left ventricles to close
A

a. Dextrorotation of the pulmonary artery

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14
Q
  1. If the patient is experiencing frequent vomiting, the body will attempt to balance pH by adapting to ______.
    a. Metabolic acidosis
    b. Metabolic alkalosis
    c. Respiratory alkalosis
    d. Respiratory acidosis
A

d. Respiratory acidosis

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15
Q
  1. Which of the following converts the inactive enzyme of protein digestion in the stomach to it’s active form?
    a. Intrinsic factor
    b. Pepsin
    c. Hydrochloric acid
    d. Gastrin
A

c. Hydrochloric acid

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16
Q
  1. The ejaculatory duct empties in the ______.
    a. Vas deferens
    b. Prostate
    c. Colliculus seminalis
    d. Seminal vesicles
A

b. Prostate

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17
Q
  1. Which hormone is responsible for the onset of the menstrual cycle?
    a. Follicle stimulating hormone
    b. Luteinizing hormone
    c. Estrogen
    d. Gonadotropin releasing factor
18
Q
  1. Which of the following hormones is responsible for the formation of the corpus albicans ?
    a. Follicle stimulating hormone
    b. Progesterone
    c. Luteinizing hormone
    d. Estrogen
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A

c. Luteinizing hormone

19
Q
  1. Which hormone is responsible for the ovum to leave the follicle?
    a. Follicle stimulating hormone
    b. Progesterone
    c. Luteinizing hormone
    d. Estrogen
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A

c. Luteinizing hormone

20
Q
  1. Which hormone is responsible for myometrium contractions?
    a. Estrogen
    b. Follicle stimulating hormone
    c. Prostaglandins
    d. Luteinizing hormone
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A

c. Prostaglandins

21
Q
  1. The hormone that takes calcium out of the blood and puts it into the one is produced by ______.
    a. Chromaffin
    b. Argentaffin
    c. Follicular
    d. Parafollicular
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A

d. Parafollicular

22
Q
  1. The hormone that increases absorption from the intestine is produced by which of the following glands?
    a. Thyroid
    b. Parathyroid
    c. Adrenal
    d. Hypothalamus
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A

b. Parathyroid

23
Q
  1. How is glucose absorbed across the intestinal wall?
    a. Diffusion
    b. Primary active transport
    c. Facilitated diffusion
    d. Sodium co-transport
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A

d. Sodium co-transport

24
Q
  1. The adenohypophysis is derived from which of the following embryological structures?
    a. Lateral plate
    b. Surface ectoderm
    c. Infundibulum hypothami
    d. Neural crest cells
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A

b. Surface ectoderm

25
27. A diastolic murmur is heard over the second intercostal space to the left of the sternum it is due to ______. a. Aortic regurgitation b. Mitral stenosis c. Pulmonic regurgitation d. Tricuspid stenosis
c. Pulmonic regurgitation
26
28. If a murmur is heard at the fifth intercostal space, mid clavicular line it is due to ______. a. Bicuspid stenosis b. Bicuspid regurgitation c. Tricuspid stenosis d. Tricuspid regurgitation
a. Bicuspid stenosis
27
29. What structure lies directly superior to the prostate? a. Uterus b. Seminiferous tubules c. Urinary bladder d. Ejaculatory ducts
c. Urinary bladder
28
30. The dorsum sella covers which of the following structures? a. Anterior pituitary b. Hypothalamus c. Adenohypophysis d. Neurohypophysis
d. Neurohypophysis
29
31. Aldosterone is produced from wrom which of the following? a. Zona fasciculata b. Zona glomerulosa c. Zona reticularis d. Glomerulus
b. Zona glomerulosa
30
32. In which portion of the nephron is most of the potassium reabsorbed? a. Distal convoluted tubules b. Proximal convoluted tubules c. Loop of Henle d. Ascending limb of Henle
b. Proximal convoluted tubules
31
33. Where does complete digestion of protein occur? a. Mouth b. Stomach c. Small intestine d. Large intestine
c. Small intestine
32
34. Goblet cells produce which of the following substances? a. Cholecystokinin b. Secretin c. Enterokinase d. Mucus
d. Mucus
33
35. How is most carbon dioxide carried in the body? a. As carbon dioxide b. As bicarbonate c. As carbamino hemoglobin d. Disuse in the plasma
b. As bicarbonate
34
36. Macrophages of the skin are termed ______. a. Dust cells b. Kupffer cells c. Microglia d. Langerhan's cells
d. Langerhan's cells
35
37. Which of the following has the single largest capacity? a. Expiratory reserve b. Tidal volume c. Inspiratory reserve d. Vital capacity
c. Inspiratory reserve
36
38. Alveolar pressure is _____ as compared to atmospheric pressure? a. Equal b. Slightly positive c. Slightly negative d. Greatly negative
c. Slightly negative
37
39. A Bohr shift to the left will result in which of the following? a. Increase in pH b. Decrease in pH c. Increase in carbon dioxide d. Increase in DPG
a. Increase in pH
38
40. Which of the following occurs between the closing of the AV valves and the closing of the semilunar valves? a. Atrial systole b. Ventricular systole c. Ventricular diastole d. Ventricular filling
b. Ventricular systole
39
41. The oxyntic cells are found in the ______ and produce ______. a. Stomach; pepsinogen b. Stomach; intrinsic factor c. Small intestine; trypsin d. Small intestine; enterokinase
a. Stomach; pepsinogen
40
42. Where does complete digestion of protein occur? a. Mouth b. Stomach c. Small intestine d. Large intestine
c. Small intestine
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