Proteins that function in immunity include
A. enzymes.
B. antibodies.
C. hormones.
D. collagens.
E. fibrin.
B
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The tough outer layer of meninges is called the:
a. pia mater b. arachnoid mater c. dura mater d. ventricles
Which of the following is the best explanation of how a stimulus' strength is transmitted to the central nervous system from sensory nerves?
A) More than one type of receptor will respond to larger stimulus. B) An action potential will increase in strength as stimulus's strength increases. C) Action potential frequency is increased as stimulus' strength increases. D) Action potentials as well as graded potentials are sent to the central nervous system when stimulus strength increases.
Which of the following statements relates to the proximal radioulnar joint?
A) It involves the humeroulnar joint. B) Supination and pronation occur here. C) It is actually two joints. D) It is extremely stable. E) None of the answers are correct.
The penile urethra is enclosed by the __________.
A. corpus cavernosum B. corpus spongiosum C. trabecular muscle D. prepuce E. frenulum