This nerve, commonly called the "funny bone," passes behind the medial epicondyle of the humerus; it is the
A) axillary nerve.
B) median nerve.
C) musculocutaneous nerve.
D) radial nerve.
E) ulnar nerve.
Answer: E) ulnar nerve.
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Surfactant helps to prevent the alveoli from collapsing by ________.
A) humidifying the air before it enters B) warming the air before it enters C) interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid D) protecting the surface of alveoli from dehydration and other environmental variations
Discuss the functions of the blood-brain barrier. What cellular characteristics contribute to its effectiveness?
What will be an ideal response?
Which of the following interactions is incorrect regarding the reproductive system?
A) The endocrine system provides hormones that regulate the gonads. B) The male urethra is a structure shared by the urinary and reproductive systems. C) The sympathetic and parasympathetic nervous system are both involved in erection and ejaculation. D) The gonads produce hormones that influence muscular development. E) A vasectomy is an effective way of preventing ovulation.
The heart is in the ________ cavity and is covered by the ________
A) thoracic; pleura B) pericardial; pleura C) thoracic; pericardium D) cranial; meninges E) pericardial; peritoneum