What portions of the brain contain respiratory centers and set the breathing rate?
A) medulla and pons
B) pons and cerebellum
C) cerebrum and cerebellum
D) thalamus and hypothalamus
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Question 2) Tetany resulting from uncontrolled muscle spasms may indicate a malfunction of the ________.
A) pineal gland
B) thymus
C) parathyroid glands
D) adrenal cortex
E) posterior pituitary
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Question 3) The normal respiratory rate of 12-15 breaths per minute is known as ________.
A) hyperpnea
B) eupnea
C) dyspnea
D) apnea
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Question 4) Rising blood levels of aldosterone cause the kidney tubules to ________.
A) reabsorb potassium ions
B) reabsorb sodium ions
C) reabsorb calcium ions
D) reabsorb iodine atoms
E) reabsorb hydrogen ions
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Question 5) What is the most common transport method for carbon dioxide?
A) oxyhemoglobin
B) deoxyhemoglobin
C) carbon monoxide
D) bicarbonate ions
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Question 6) Which of these hormones is released by the adrenal medulla?
A) sex hormones
B) aldosterone
C) cortisone
D) glucocorticoids
E) epinephrine (adrenaline)
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Question 7) What odorless, colorless gas binds preferentially with the same binding site on hemoglobin as oxygen?
A) hydrogen sulfide
B) carbon monoxide
C) nitrous oxide
D) methane
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Question 8) Where is calcitonin made?
A) hypothalamus
B) parafollicular cells of the parathyroid gland
C) anterior pituitary
D) parafollicular cells of the thyroid gland
E) follicular cells of the thyroid gland
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Question 9) During ________, oxygen binds to hemoglobin to form oxyhemoglobin.
A) internal respiration
B) external respiration
C) cellular respiration
D) expiration
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Question 10) Which of these hormones regulate calcium levels in the body?
A) T3 and T4
B) calcitonin and parathyroid hormone (PTH)
C) oxytocin and prolactin
D) insulin and glucagon
E) melatonin and glucocorticoids
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