Which disorder occurs when a portion of the intestines folds back into itself, similar to a telescope, resulting in obstruction of the intestines and possible ischemia?
A. Cirrhosis
B. Cholelithiasis
C. Intussusception
D. Cholecystitis
Answer: C
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Motor neurons release __________ into the neuromuscular synapse, which may generate depolarization at the motor end plate
A) Acetylcholine B) Adenosine C) Catecholamines D) GABA Fill in the blank with the correct answer.
Which of the following is correct about the location of the kidney(s)?
A) There is one kidney deep to the liver. B) The kidneys are bilateral and retroperitoneal. C) The left kidney is lower than the right. D) The kidneys are in the anterior abdominal wall. E) The kidneys lie in the pelvic cavity, and only their superior surfaces are covered by a layer of
When ________ become enclosed in lacunae, they become cells called ________.
A. osteoblasts; osteocytes B. osteoblasts; osteoclasts C. osteocytes; osteoblasts D. osteogenic cells; osteoblasts E. osteocytes; osteoclasts
A relatively new theory has arisen regarding the development of twins at fertilization. In addition to the phenomena of identical and fraternal twins, the theory suggests that semi-identical twins called polar body twins can occur if fertilization occurs in the second polar body immediately after fertilization of the oocyte (different sperm fertilizing each). If this is true, what should be true about the zygotes?
A. One twin will be physically smaller than the other after birth and later in life. B. The twins will have the exact same maternal genes, but their paternal genes will vary. C. The twins will possess exactly the same genetic material. D. At least one of the twins will have a genetic abnormality due to the nature of the division that produces the secondary oocyte and polar body.