A patient is suffering from multiple sclerosis. Her own immune system attacks the myelin on nervous tissue. Which of the following best describes the type of hypersensitivity she is experiencing?
a. Allergy
b. Allograft
c. Alloimmunity
d. Autoimmunity
Answer: d. Autoimmunity
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When the abdomen is divided into nine regions, the most superior horizontal line is called the midclavicular line
Indicate whether the statement is true or false
The atlas, which supports the skull, is the first ________ vertebrae
A) cervical B) thoracic C) lumbar D) sacral
The abbreviation for both eyes is:
A) OS B) OD C) OU D) ON
The stretch reflex differs from the withdrawal reflex in that
a. activation of the afferent results only in excitatory reflex responses in the former case, but in both excitatory and inhibitory responses in the latter case. b. the former is monosynaptic and the latter is polysynaptic. c. the motor neurons associated with the former directly stimulate muscle stretching while those associated with the latter cause muscle contraction. d. two of these. e. all of these.