Inflammation of the urethra is called ________
A) pyelonephritis
B) urethritis
C) cystitis
D) glomerulonephritis
B
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Sperm cannot fertilize an egg unless they have been in the female reproductive tract for several hours. This enhanced ability of the sperm to fertilize the ovum is called capacitation. In vitro studies indicate that the sperm can fertilize the ovum if they are first washed before being introduced to the ovum. These observations suggest that
A) pH is an important factor in the process of capacitation. B) in capacitation, secretions of the female reproductive tract are taken up by the sperm. C) only sperm that come into contact with vaginal secretions are capable of fertilizing an ovum. D) capacitation is temperature-dependent. E) capacitation involves the removal of some inhibiting substance(s) from the sperm.
Which of the following situations represents negative feedback?
a. Hormone A stimulates hormone B; hormone B inhibits hormone C. b. Hormone A inhibits hormone B; hormone B inhibits hormone A. c. Hormone A stimulates hormone B; hormone B inhibits hormone A. d. Hormone A inhibits hormone B; hormone B inhibits hormone C. e. Hormone A stimulates hormone B; hormone B stimulates hormone A.
What arises from the epicondyles of the humerus?
What will be an ideal response?
Which muscle is an antagonist to the gastrocnemius muscle?
A) soleus B) plantaris C) flexor digitorum longus D) tibialis anterior