In a patient with a mutation that causes an inactive von Willebrand factor (vWF), which of the following would be TRUE?
A. Thrombin will never be activated.
B. Clots will be stronger than typical.
C. Fibrinogen cannot polymerize.
D. Platelets will not adhere to collagen.
E. None of the answers will be true.
Answer: D
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The type of connective tissue shown in the figure is the least specialized in adults. What is its primary function?
A) It cushions organs and provides support but permits independent movement. B) It provides a storage of energy resources. C) It provides firm attachment of muscles to bone, and conducts the pull of muscles. D) It provides insulation. E) It provides strength to resist forces applied from many directions.
Spermatogenesis ends with the production of ________ spermatids.
A) 16 B) 4 C) 6 D) 8 E) 2
Which of the following is NOT a part of the diencephalons?
A) hypothalamus B) pineal gland C) pons D) thalamus
The largest diameter blood vessels (e.g., the aorta) are:
A) elastic arteries B) muscular arteries C) capillaries D) arterioles