The foramen magnum is associated with which cranial bone?
A. Frontal
B. Parietal
C. Occipital
D. Ethmoid
E. Sphenoid
Answer: C
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Microscopic examination of a tissue reveals a loose framework of fibers embedded in a large volume of fluid ground substance, with a wide variety of cell types. This tissue would most likely have come from the
A) inner wall of a blood vessel. B) lungs. C) spleen. D) superficial fascia between skin and muscle. E) bony socket of the eye.
Cardiac muscle cells are like skeletal muscle cells in that they both
A. possess intercalated disks. B. have striations. C. depolarize as a result of Na+ and Ca2+ influxes. D. are multinucleated. E. lack sarcomeres.
Which of the following is NOT a cytokine involved in innate immunity?
A) interleukins B) tumor necrosis factor (TNF) C) interferons D) opsonins
Nicotinic receptors are activated by the tobacco plant derivative nicotine, whereas muscarinic receptors are activated by the mushroom poison muscarine
a. True b. False Indicate whether the statement is true or false