Which of the following vessels supplies 80% of the cerebrum with oxygenated blood?
A. Superficial temporal artery
B. Occipital artery
C. Middle cerebral artery
D. Anterior cerebral artery
E. Internal carotid artery
Answer: E
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The main function of the respiratory system, the exchange of oxygen and carbon dioxide, occurs where?
a. pharynx b. trachea c. bronchi d. alveoli
Hyperventilation is usually accompanied by a(n)
A) increase in blood CO2 concentration and a drop in pH. B) increase in blood CO2 concentration and a rise in pH. C) decrease in blood CO2 concentration and a drop in pH. D) decrease in blood CO2 concentration and a rise in pH.
The golf-ball sized structure found inferior to the urinary bladder, and surrounding the most proximal portion of the urethra, is called the ________.
A. urethra B. prostate C. seminal vesicle D. bulbourethral gland E. ejaculatory duct
Which of the following is NOT true concerning oxytocin?
A. Oxytocin produces milk let-down during nursing. B. Oxytocin release in childbirth is controlled by positive feedback. C. Oxytocin increases uterine contractions during childbirth. D. Oxytocin is a steroid hormone.