Endocrine glands differ from exocrine glands because they don't:
A. have a blood supply.
B. have ducts.
C. secrete chemical messengers.
D. have cells.
Answer: B. have ducts.
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Which of the following is the heel bone?
A) talus B) navicular C) calcaneus D) cuboid E) patella
The plateau in the action potential of cardiac muscle results from the action of ________
A) K+ inflow B) K+ outflow C) slow Ca2+ channels D) Na+ inflow E) fast Ca2+ channels
Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord. As a result, which of the following would you expect?
A) loss of sensation in his torso B) inability to breathe C) problems with moving his arms D) uncontrollable sweating of his feet E) problems moving his legs
The hypophyseal portal system connects the ________ with the ________
A) anterior pituitary; posterior pituitary B) hypothalamus; thyroid C) pituitary glands; thyroid D) anterior pituitary; hypothalamus E) posterior pituitary; hypothalamus