The varicella zoster virus causing chicken pox can stay dormant in the sensory neurons in the dorsal root ganglion. It can get reactivated later on in life causing ________
A) quadriplegia B) shingles C) hemiplegia D) sciatica
Answer: B
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The incus, malleus, and stapes of the middle ear
A. serve to keep the pressure on the two sides of the tympanic membrane equal. B. are part of the vestibular apparatus. C. are in direct contact with both the tympanic membrane and the round window. D. serve to amplify the pressure of sound vibrations from the air in the outer ear to the fluid in the inner ear. E. are found inside the cochlear duct.
The ________ system produces movement and generates heat when its parts contract.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a location where adipose tissue is commonly found?
a) Subcutaneous layer deep to the skin b) Lining the chambers of the heart c) Surrounding the brain d) Inside the ear canal e) In the cartilage found in joints
Sequence the following events involved in muscle cell contraction
1 . Sodium channels open, allowing sodium to flow in 2 . Impulse reaches axon's synaptic knob 3 . ACh binds to receptors on sarcolemma 4 . Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis 5 . If enough sodium moves in to the muscle cell, an impulse (action potential) develops a. 1, 2, 3, 4, 5 b. 2, 1, 3, 4, 5 c. 2, 4, 3, 1, 5 d. 3, 4, 5, 1, 2 e. 3, 5, 2, 1, 4